The metadata libvirt cares about is identical for version 3
as for previous versions, so we merely need list the new
version number.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If a shutdown is expected because it was triggered via libvirt we can
also expect the monitor to close. In those cases do not report an
internal error like:
"internal error: End of file from qemu monitor"
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Simply tries to match the provided regex on a string and returns
the result. Useful if caller don't care about the matched substring
and want to just test if some pattern patches a string.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The @type from virFileReadValueString needs to be VIR_FREE each time
through the loop since it's not saved and since cleanup can be reached
prior to decoding it for @kernel_type amd bank->type, the cleanup code
needs to also have a VIR_FREE
Found by Coverity
Adjust the current message to make it clear, that it is the hotplug
operation that is unsupported with the given host device type.
https://bugzilla.redhat.com/show_bug.cgi?id=1450072
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When running on a NUMA machine, populate the sibling node
and distance information using data supplied by Xen.
With locality distances information, under Xen, new host
capabilities would like:
<topology>
<cells num='4'>
<cell id='0'>
<memory unit='KiB'>263902380</memory>
<distances>
<sibling id='0' value='10'/>
<sibling id='1' value='21'/>
</distances>
...
</cell>
...
</cells>
...
</topology>
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
GCC complains that inlining virStringTrimOptionalNewline is not
likely on some platforms:
cc1: warnings being treated as errors
../../src/util/virfile.c: In function 'virFileReadValueBitmap':
../../src/util/virstring.h:292: error: inlining failed in call to 'virStringTrimOptionalNewline': call is unlikely and code size would grow [-Winline]
../../src/util/virfile.c:3987: error: called from here [-Winline]
Inlining this function is not going to be a measurable performance
benefit either, since the time required to execute it is going to
be dominated by running of strlen() over the string, not by the
function call overhead.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Added only in drivers that were already calling
virCapabilitiesInitNUMA(). Instead of refactoring all the callers to
behave the same way in case of error, just follow what the callers are
doing for all the functions.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
We're only adding only info about L3 caches, we can add more
later (just by changing one line), but for now that's more than enough
without overwhelming anyone.
XML snippet of how this should look like (also seen as part of the commit):
<cache>
<bank id='0' level='3' type='both' size='8192' unit='KiB' cpus='0-7'/>
</cache>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
It is no longer needed thanks to the great virfilewrapper.c. And this
way we don't have to add a new set of functions for each prefixed
path.
While on that, add two functions that weren't there before, string and
scaled integer reading ones. Also increase the length of the string
being read by one to accompany for the optional newline at the
end (i.e. change INT_STRLEN_BOUND to INT_BUFSIZE_BOUND).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
So, because mingw is somehow OK with dereferencing a pointer within a
VIR_DEBUG macro, compared to outside of it to which it complained with a
"potential NULL pointer dereference" error (still a false positive), we
can make the code a tiny bit cleaner.
Sighed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When adding a nwfilter onto the list in
virNWFilterObjListAssignDef() this array is re-allocated to match
demand for new size. However, it is never freed leading to a
leak:
==26535== 136 bytes in 1 blocks are definitely lost in loss record 1,079 of 1,250
==26535== at 0x4C2E2BE: realloc (vg_replace_malloc.c:785)
==26535== by 0x54BA28E: virReallocN (viralloc.c:245)
==26535== by 0x54BA384: virExpandN (viralloc.c:294)
==26535== by 0x54BA657: virInsertElementsN (viralloc.c:436)
==26535== by 0x55DB011: virNWFilterObjListAssignDef (virnwfilterobj.c:362)
==26535== by 0x55DB530: virNWFilterObjListLoadConfig (virnwfilterobj.c:503)
==26535== by 0x55DB635: virNWFilterObjListLoadAllConfigs (virnwfilterobj.c:539)
==26535== by 0x2AC5A28B: nwfilterStateInitialize (nwfilter_driver.c:250)
==26535== by 0x5621C64: virStateInitialize (libvirt.c:770)
==26535== by 0x124379: daemonRunStateInit (libvirtd.c:881)
==26535== by 0x554AC78: virThreadHelper (virthread.c:206)
==26535== by 0x8F5F493: start_thread (in /lib64/libpthread-2.23.so)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
After bdcf6e481 there is a crasher in libvirt. The commit assumes
that priv->perf is always set. That is not true. For inactive
domains, the priv->perf is not allocated as it is set in
qemuProcessLaunch(). Now, usually we differentiate between
accesses to inactive and active definition and it works just
fine. Except for 'domstats'. There priv->perf is accessed without
prior check for domain inactivity. While we could check for that,
more robust solution is to make virPerfEventIsEnabled() accept
NULL.
How to reproduce:
1) ensure you have at least one inactive domain
2) virsh domstats
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
This patch fixes the following MinGW error (although actually being a
false positive):
../../src/util/virmdev.c: In function 'virMediatedDeviceListMarkDevices':
../../src/util/virmdev.c:453:21: error: potential null pointer
dereference [-Werror=null-dereference]
const char *mdev_path = mdev->path;
^~~~~~~~~
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The problem resides in virHostdevUpdateActiveMediatedDevices which gets
called during qemuProcessReconnect. The issue here is that
virMediatedDeviceListAdd takes a pointer to the item to be added to the
list to which VIR_APPEND_ELEMENT is used, which also clears the pointer.
However, in this case only the local copy of the pointer got cleared,
leaving the original pointing to valid memory. To sum it up, during
cleanup phase, the original pointer is freed and the daemon crashes
basically any time it would access it.
Backtrace:
0x00007ffff3ccdeba in __strcmp_sse2_unaligned
0x00007ffff72a444a in virMediatedDeviceListFindIndex
0x00007ffff7241446 in virHostdevReAttachMediatedDevices
0x00007fffc60215d9 in qemuHostdevReAttachMediatedDevices
0x00007fffc60216dc in qemuHostdevReAttachDomainDevices
0x00007fffc6046e6f in qemuProcessStop
0x00007fffc6091596 in processMonitorEOFEvent
0x00007fffc6091793 in qemuProcessEventHandler
0x00007ffff7294bf5 in virThreadPoolWorker
0x00007ffff7294184 in virThreadHelper
0x00007ffff3fdc3c4 in start_thread () from /lib64/libpthread.so.0
0x00007ffff3d269cf in clone () from /lib64/libc.so.6
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1446455
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Use a local variable to hold data, rather than accessing the pointer
after calling virMediatedDeviceListAdd (therefore VIR_APPEND_ELEMENT).
Although not causing an issue at the moment, this change is a necessary
prerequisite for tweaking virMediatedDeviceListAdd in a separate patch,
which will take a reference for the source pointer (instead of pointer
value) and will clear it along the way.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Even though there are several checks before calling this function
and for some scenarios we don't call it at all (e.g. on disk hot
unplug), it may be possible to sneak in some weird files (e.g. if
domain would have RNG with /dev/shm/some_file as its backend). No
matter how improbable, we shouldn't unlink it as we would be
unlinking a file from the host which we haven't created in the
first place.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cedric Bosdonnat <cbosdonnat@suse.com>
Just like in previous commit, this fixes the same issue for
hotplug.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cedric Bosdonnat <cbosdonnat@suse.com>
While the code allows devices to already be there (by some
miracle), we shouldn't try to create devices that don't belong to
us. For instance, we shouldn't try to create /dev/shm/file
because /dev/shm is a mount point that is preserved. Therefore if
a file is created there from an outside (e.g. by mgmt application
or some other daemon running on the system like vhostmd), it
exists in the qemu namespace too as the mount point is the same.
It's only /dev and /dev only that is different. The same
reasoning applies to all other preserved mount points.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cedric Bosdonnat <cbosdonnat@suse.com>
Currently, all we need to do in qemuDomainCreateDeviceRecursive() is to
take given @device, get all kinds of info on it (major & minor numbers,
owner, seclabels) and create its copy at a temporary location @path
(usually /var/run/libvirt/qemu/$domName.dev), if @device live under
/dev. This is, however, very loose condition, as it also means
/dev/shm/* is created too. Therefor, we will need to pass more arguments
into the function for better decision making (e.g. list of mount points
under /dev). Instead of adding more arguments to all the functions (not
easily reachable because some functions are callback with strictly
defined type), lets just turn this one 'const char *' into a 'struct *'.
New "arguments" can be then added at no cost.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cedric Bosdonnat <cbosdonnat@suse.com>
When setting up mount namespace for a qemu domain the following
steps are executed:
1) get list of mountpoints under /dev/
2) move them to /var/run/libvirt/qemu/$domName.ext
3) start constructing new device tree under /var/run/libvirt/qemu/$domName.dev
4) move the mountpoint of the new device tree to /dev
5) restore original mountpoints from step 2)
Note the problem with this approach is that if some device in step
3) requires access to a mountpoint from step 2) it will fail as
the mountpoint is not there anymore. For instance consider the
following domain disk configuration:
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/dev/shm/vhostmd0'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</disk>
In this case operation fails as we are unable to create vhostmd0
in the new device tree because after step 2) there is no /dev/shm
anymore. Leave aside fact that we shouldn't try to create devices
living in other mountpoints. That's a separate bug that will be
addressed later.
Currently, the order described above is rearranged to:
1) get list of mountpoints under /dev/
2) start constructing new device tree under /var/run/libvirt/qemu/$domName.dev
3) move them to /var/run/libvirt/qemu/$domName.ext
4) move the mountpoint of the new device tree to /dev
5) restore original mountpoints from step 3)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cedric Bosdonnat <cbosdonnat@suse.com>
When we get a POLLHUP or VIR_EVENT_HANDLE_HANGUP event for a client, we
still want to read from the socket to process any accumulated data. But
doing so inevitably results in an error and a call to
virNetClientMarkClose before we get to processing the hangup event (and
another call to virNetClientMarkClose). However the close reason passed
to the second virNetClientMarkClose call is ignored because another one
was already set. We need to pass the correct close reason when marking
the socket to be closed for the first time.
https://bugzilla.redhat.com/show_bug.cgi?id=1373859
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
While fixing a bug with incorrectly freed memory in commit
v3.1.0-399-g5498aa29a, I accidentally broke persistent migration of
transient domains. Before adding qemuDomainDefCopy in the path, the code
just took NULL from vm->newDef and used it as the persistent def, which
resulted in no persistent XML being sent in the migration cookie. This
scenario is perfectly valid and the destination correctly handles it by
using the incoming live definition and storing it as the persistent one.
After the mentioned commit libvirtd would just segfault in the described
scenario.
https://bugzilla.redhat.com/show_bug.cgi?id=1446205
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If we are encoding a block of data that is 16 bytes in length,
we cannot leave it as 16 bytes, we must pad it out to the next
block boundary, 32 bytes. Without this padding, the decoder will
incorrectly treat the last byte of plain text as the padding
length, as it can't distinguish padded from non-padded data.
The problem exhibited itself when using a 16 byte passphrase
for a LUKS volume
$ virsh secret-set-value 55806c7d-8e93-456f-829b-607d8c198367 \
$(echo -n 1234567812345678 | base64)
Secret value set
$ virsh start demo
error: Failed to start domain demo
error: internal error: process exited while connecting to monitor: >>>>>>>>>>Len 16
2017-05-02T10:35:40.016390Z qemu-system-x86_64: -object \
secret,id=virtio-disk1-luks-secret0,data=SEtNi5vDUeyseMKHwc1c1Q==,\
keyid=masterKey0,iv=zm7apUB1A6dPcH53VW960Q==,format=base64: \
Incorrect number of padding bytes (56) found on decrypted data
Notice how the padding '56' corresponds to the ordinal value of
the character '8'.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When creating v3.2.0-77-g8be3ccd04 commit, I completely forgot that one
migration capability is very special. It's the "events" capability which
tells QEMU to report "MIGRATION" events. Since libvirt always wants the
events, it is enabled in qemuConnectMonitor and the rest of the code
should not touch it.
https://bugzilla.redhat.com/show_bug.cgi?id=1439841https://bugzilla.redhat.com/show_bug.cgi?id=1441165
Messed-up-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
... with VIR_NET_GENERATED_MACV???_PREFIX, which is defined in
util/virnetdevmacvlan.h.
Since VIR_NET_GENERATED_PREFIX is used for plain tap devices, it is
renamed to VIR_NET_GENERATED_TAP_PREFIX and moved to virnetdev.h
The parser had been clearing out *all* suggested device names for
type='direct' (aka macvtap) interfaces. All of the code implementing
macvtap allows for a user-specified device name, so we should allow
it. In the case that an interface name starts with "macvtap" or
"macvlan" though, we do still clear it out, just as we do with "vnet"
(which is the prefix used for automatically generated tap device
names), since those are the prefixes for the names we autogenerate for
macvtap and macvlan devices.
Resolves: https://bugzilla.redhat.com/1335798
MACVTAP_NAME_PREFIX and MACVLAN_NAME_PREFIX could be useful to other
files if they were defined in virnetdevmacvlan.h instead of
virnetdevmacvlan.c, so do that (while slightly renaming them and also
adding yet another #define that chooses between macvlan/macvtap based
on flags).
This is a prerequisite to fix: https://bugzilla.redhat.com/1335798
If the network isn't active during networkNotifyActualDevice(), we
would log an error message stating that the bridge device didn't
exist. This patch adds a check to see if the network is active, making
the logs more useful in the case that it isn't.
Partially resolves: https://bugzilla.redhat.com/1442700
Nothing that could happen during networkNotifyActualDevice() could
justify unceremoniously killing the qemu process, but that's what we
were doing.
In particular, new code added in commit 85bcc022 (first appearred in
libvirt-3.2.0) attempts to reattach tap devices to their assigned
bridge devices when libvirtd restarts (to make it easier to recover
from a restart of a libvirt network). But if the network has been
stopped and *not* restarted, the bridge device won't exist and
networkNotifyActualDevice() will fail.
This patch changes networkNotifyActualDevice() and
qemuProcessNotifyNets() to return void, so that qemuProcessReconnect()
will soldier on regardless of what happens (any errors will still be
logged though).
Partially resolves: https://bugzilla.redhat.com/1442700
After 1eb6647979 nobody calls the iohelper with 6 arguments.
Everybody uses the other mode. Well, the only user of iohelper
after the previous commit is virFileWrapperFd really.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Currently we use iohelper for virFDStream implementation. This is
because UNIX I/O can lie sometimes: even though a FD for a
file/block device is set as unblocking, actual read()/write() can
block. To avoid this, a pipe is created and one end is kept for
read/write while the other is handed over to iohelper to
write/read the data for us. Thus it's iohelper which gets blocked
and not our event loop.
This approach has two problems:
1) we are spawning a new process.
2) any exchange of information between daemon and iohelper can be
done only through the pipe.
Therefore, iohelper is replaced with an implementation in thread
which is created just for the stream lifetime. The data are still
transferred through pipe (for now), but both problems described
above are solved.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
While this is no functional change, it makes the code look a bit
nicer. Moreover, it prepares ground for future work.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
There is really no reason why we should have to have 'struct'
everywhere.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This is a USB3 controller and it's a better choice than piix3-uhci.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Andrea Bolognani <abologna@redhat.com>
The new logic will set the piix3-uhci if available regardless of
any architecture and it will be updated to better model based on
architecture and device existence.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Andrea Bolognani <abologna@redhat.com>
Since commit c5f6151390 qemuDomainBlockInfo tries to update the
"physical" storage size for all network storage and not only block
devices.
Since the storage driver APIs to do this are not implemented for certain
storage types (RBD, iSCSI, ...) the code would fail to retrieve any data
since the failure of qemuDomainStorageUpdatePhysical is fatal.
Since it's desired to return data even if the total size can't be
updated we need to ignore errors from that function and return plausible
data.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1442344
Since the private data structure is not freed upon stopping a VM, the
usbaddrs pointer would be leaked:
==15388== 136 (16 direct, 120 indirect) bytes in 1 blocks are definitely lost in loss record 893 of 1,019
==15388== at 0x4C2CF55: calloc (vg_replace_malloc.c:711)
==15388== by 0x54BF64A: virAlloc (viralloc.c:144)
==15388== by 0x5547588: virDomainUSBAddressSetCreate (domain_addr.c:1608)
==15388== by 0x144D38A2: qemuDomainAssignUSBAddresses (qemu_domain_address.c:2458)
==15388== by 0x144D38A2: qemuDomainAssignAddresses (qemu_domain_address.c:2515)
==15388== by 0x144ED1E3: qemuProcessPrepareDomain (qemu_process.c:5398)
==15388== by 0x144F51FF: qemuProcessStart (qemu_process.c:5979)
[...]
Clean the stale data after shutting down the VM. Otherwise the data
would be leaked on next VM start. This happens due to the fact that the
private data object is not freed on destroy of the VM.
Per xen-xl conversions from and to native under host-passthrough
mode we take care for Xen (nestedhvm = mode) applied and inherited
settings generating or processing correct feature policy:
[On Intel (VT-x) architectures]
<feature policy='disable' name='vmx'/>
or
[On AMD (AMD-V) architectures]
<feature policy='disable' name='svm'/>
It will then generate (or parse) for nestedhvm=1 in/from xl format.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
Xen feature nestedhvm is the option on Xen 4.4+ which enables
nested virtualization when mode host-passthrough is applied.
nested HVM is enabled by adding below on the target domain;
<cpu mode='host-passthrough'/>
Virtualization on target domain can be disabled by specifying
such under feature policy rule on target name;
[On Intel (VT-x) architecture]
<feature policy='disable' name='vmx'/>
or:
[On AMD (AMD-V) architecture]
<feature policy='disable' name='svm'/>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
This patch maps /domain/cpu/cache element into -cpu parameters:
- <cache mode='passthrough'/> is translated to host-cache-info=on
- <cache level='3' mode='emulate'/> is transformed into l3-cache=on
- <cache mode='disable'/> is turned in host-cache-info=off,l3-cache=off
Any other <cache> element is forbidden.
The tricky part is detecting whether QEMU supports the CPU properties.
The 'host-cache-info' property is introduced in v2.4.0-1389-ge265e3e480,
earlier QEMU releases enabled host-cache-info by default and had no way
to disable it. If the property is present, it defaults to 'off' for any
QEMU until at least 2.9.0.
The 'l3-cache' property was introduced later by v2.7.0-200-g14c985cffa.
Earlier versions worked as if l3-cache=off was passed. For any QEMU
until at least 2.9.0 l3-cache is 'off' by default.
QEMU 2.9.0 was the first release which supports probing both properties
by running device-list-properties with typename=host-x86_64-cpu. Older
QEMU releases did not support device-list-properties command for CPU
devices. Thus we can't really rely on probing them and we can just use
query-cpu-model-expansion QMP command as a witness.
Because the cache property probing is only reliable for QEMU >= 2.9.0
when both are already supported for quite a few releases, we let QEMU
report an error if a specific cache mode is explicitly requested. The
other mode (or both if a user requested CPU cache to be disabled) is
explicitly turned off for QEMU >= 2.9.0 to avoid any surprises in case
the QEMU defaults change. Any older QEMU already turns them off so not
doing so explicitly does not make any harm.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This patch introduces
<cache level='N' mode='emulate'/>
<cache mode='passthrough'/>
<cache mode='disable'/>
sub element of /domain/cpu. Currently only a single <cache> element is
allowed.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The type of this parameter is virCPUType so calling it 'mode' is pretty
strange, 'type' is a much better name.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Not all async jobs are visible via virDomainGetJobStats (either they are
too fast or getting the stats is not allowed during the job), but
forcing all of them to advertise the operation is easier than hunting
the jobs for which fetching statistics is allowed. And we won't need to
think about this when we add support for getting stats for more jobs.
https://bugzilla.redhat.com/show_bug.cgi?id=1441563
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
As with virtio-scsi, the "internal error" messages after
preparing a vhost-scsi hostdev overwrites more meaningful
error messages deeper in the callchain. Remove it too.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
I tried to attach a SCSI LUN to two different guests, and forgot
to specify "shareable" in the hostdev XML. Attaching the device
to the second guest failed, but the message was not helpful in
telling me what I was doing wrong:
$ cat scsi_scratch_disk.xml
<hostdev mode='subsystem' type='scsi'>
<source>
<adapter name='scsi_host3'/>
<address bus='0' target='15' unit='1074151456'/>
</source>
</hostdev>
$ virsh attach-device dasd_sles_d99c scsi_scratch_disk.xml
Device attached successfully
$ virsh attach-device dasd_fedora_0e1e scsi_scratch_disk.xml
error: Failed to attach device from scsi_scratch_disk.xml
error: internal error: Unable to prepare scsi hostdev: scsi_host3:0:15:1074151456
I eventually discovered my error, but thought it was weird that
Libvirt doesn't provide something more helpful in this case.
Looking over the code we had just gone through, I commented out
the "internal error" message, and got something more useful:
$ virsh attach-device dasd_fedora_0e1e scsi_scratch_disk.xml
error: Failed to attach device from scsi_scratch_disk.xml
error: Requested operation is not valid: SCSI device 3:0:15:1074151456 is already in use by other domain(s) as 'non-shareable'
Looking over the error paths here, we seem to issue better
messages deeper in the callchain so these "internal error"
messages overwrite any of them. Remove them, so that the
more detailed errors are seen.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
0feebab2 adds calling qemuBlockNodeNamesDetect for completed job
on updating block jobs. This affects cancelling drive mirror logic as
this function drops vm lock. Now we have to recheck all disks
before the disk with the completed block job before going
to wait for block job events.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
qemuDomainGetNumaParameters would return the automatic nodeset even for
the persistent config if the domain was running. This is incorrect since
the automatic nodeset will be re-queried upon starting the vm.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1445325
While peer-to-peer migration enters the Confirm phase even if the
Perform phase fails, the client which initiated a non-p2p migration will
never call virDomainMigrateConfirm* API if the Perform phase failed.
Thus we need to explicitly reset migration before reporting a failure
from the Perform phase API.
https://bugzilla.redhat.com/show_bug.cgi?id=1425003
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The recently added sanlock_strerror function can be used to translate
sanlock's numeric errors into human readable strings.
https://bugzilla.redhat.com/show_bug.cgi?id=1409511
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Migration with old QEMU which does not support query-migrate-parameters
would fail because the QMP command is called unconditionally since the
introduction of TLS migration. Previously it was only called if the user
explicitly requested a feature which uses QEMU migration parameters. And
even then the situation was not ideal, instead of reporting an
unsupported feature we'd just complain about missing QMP command.
Trivially no migration parameters are supported when
query-migrate-parameters QMP command is missing. There's no need to
report an error if it is missing, the callers will report better error
if needed.
https://bugzilla.redhat.com/show_bug.cgi?id=1441934
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Rather than waiting for the first save to fail, let's generate the
directory with the correct privs during initialization.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than overloading one function - split apart the logic to have
separate interfaces and local/private structures to manage the data
for which the helper is collecting.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than 'nuuids' it should be 'maxuuids' and rather than 'got'
it should be 'nuuids'. Alter the logic of the list traversal to
utilize those names.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than using "ret = -1" and cleanup processing, alter the return
path on failure to goto error and then just return the data.got.
In the error path, we no longer check for ret < 0, we just can free
anything added to the array and return -1 directly.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than dereferencing obj->def->X, create a local 'def' variable
that will dereference the def and use directly.
Signed-off-by: John Ferlan <jferlan@redhat.com>
When processing a virSecretPtr use 'secret' as a variable name.
When processing a virSecretObjPtr use 'obj' as a variable name.
When processing a virSecretDefPtr use 'def' as a variable name,
unless a distinction needs to be made with a 'newdef' such as
virSecretObjListAddLocked (which also used the VIR_STEAL_PTR macro
for the configFile and base64File).
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than have the caller check if !obj before calling, just check
in the function for !obj and return.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Make various virSecretObjList*Locked functions static and make
virSecretObjNew static since they're only called within virtsecretobj.c.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Only save the config when using a generated UUID if we were able to
create an object for the def. There could have been "other reasons"
for the assignment to fail, so saving the config could be incorrect.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than "wait" for the first config file to be created, force creation
of the configDir during driver state initialization.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Essentially virNWFilterSaveDef executed in a different order the same
sequence of calls, so let's just make one point of reference.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than separate calls, use a common call and generate a better
error message which includes the incorrect uuidstr.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Move from virnwfilterobj.h to virnwfilterobj.c.
Create the virNWFilterObjListNew() API in order to allocate.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Move the structure to virnwfilterobj.c and create necessary accessor API's
for the various fields.
Also make virNWFilterObjFree static since there's no external callers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than dereferencing obj->def->XXX or nwfilters->objs[i]->X
create local virNWFilterObjPtr and virNWFilterDefPtr variables.
Future adjustments will be privatizing the object more, so this just
prepares the code for that reality.
Signed-off-by: John Ferlan <jferlan@redhat.com>
When processing a virNWFilterPtr use 'nwfilter' as a variable name.
When processing a virNWFilterObjPtr use 'obj' as a variable name.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Instead of figuring out upfront whether <input> will be a single
or a pair element, format the subelements into a separate buffer
and close <input/> early if this buffer is empty.
https://bugzilla.redhat.com/show_bug.cgi?id=1439132
During 'matrix' testing of all possible combinations I found that if
device is formated with "gpt" first, then an attempt is made to format
using "mac", a startup will fail.
Deeper analysis by Peter Krempa indicates that the "mac" table fits
into the first block on the disk. Since the GPT disklabel is stored
at LBA address 1 it is not overwritten at all. Thus it's apparent that
the (blkid) detection tool then prefers GPT over a older disklabel.
The GPT disklabel has also a secondary copy at the last LBA of the disk.
So, follow the same logic as the logical pool in clearing a 1MB swath
at the beginning and end of the device to avoid potential issues with
larger sector sizes for the device.
Also fixed a minor formatting nit in virStorageBackendDeviceIsEmpty call.
Create a wrapper/helper that can be used to call the storage backend
wipe helper - storageBackendVolWipeLocalFile for future use by logical
and disk backends to clear out the partition table rather than having
each open code the same algorithm.
Add bool 'zero_end' and logic that would allow a caller to wipe specific
portions of a target device either from the beginning (the default) or
from the end when zero_end is true.
This will allow for this code to wipe out partition table information
from a device.
There were a few bugs in keycodemap tool that broke it
when run on python circa 2.7.5 or older, which affected
RHEL builds.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
A long time ago we imported the keymaps.csv file from GTK-VNC so we
can do conversions between keycode sets. Meanwhile lots of bug fixes
have gone into this CSV file and libvirt hasn't kept in sync. The
keymaps.csv file and associated generator script has been pulled out
of GTK-VNC into a dedicated GIT repo for use as a submodule. This
allows GTK-VNC, SPICE-GTK, QEMU and libvirt to share the same master
database and tools and pushing updates merely requires a submodule
commit update as with gnulib.
The test suite is updated to cover some extra boundary conditions.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Shorten the time needed to keep the list lock and alter the cleanup
path to be more of an error path.
Utilize the the virObjectListFree function to handle the calls for
virObjectUnref on each list element and the VIR_FREE of the list
instead of open coding it.
Change the name of the virHashForEach callback to match the name
of the Export function with the Callback added onto it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Commit id '865f479da' altered the logic to use a common test*ObjFindByName
helpers which would lock/unlock the test driver; however, a few cleanup paths
in that cleanup missed removing the Unlock, so remove it now.
Signed-off-by: John Ferlan <jferlan@redhat.com>
it should be a comparison of modes between new and old devices. So
the argument of the second virDomainNetGetActualDirectMode should be
newdev.
Signed-off-by: ZhiPeng Lu <lu.zhipeng@zte.com.cn>
Currently, virNetDevSetCoalesce() stub is always returning error. As
it's used by virNetDevTapCreateInBridgePort(), it essentially breaks
bridged networking if coalesce is not supported.
To make it work, relax the stub to trigger error only when its
coalesce argument is not NULL, otherwise report success.
Since we have that information provided by @def which is not a private
object, there is really no need for the variable.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
So udevGetDeviceDetails was one those functions using an enum in a
switch, but since it had a 'default' case, compiler didn't warn about an
unhandled enum. Moreover, the error about an unsupported device type
reported in the default case is unnecessary, since by the time we get
there, udevGetDeviceType (which was called before) already made sure
that any unrecognized device types had been handled properly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
ka maybe have been freeed in virObjectUnref, application using
virKeepAliveTimer will segfault when unlock ka. We should keep
ka's refs positive before using it.
#0 0x00007fd8f79970e8 in virClassIsDerivedFrom (klass=0xdeadbeef, parent=0x7fd8e8001b80) at util/virobject.c:169
#1 0x00007fd8f799742e in virObjectIsClass (anyobj=anyobj entry=0x7fd8e800b9c0, klass=＜optimized out＞) at util/virobject.c:365
#2 0x00007fd8f79974e4 in virObjectUnlock (anyobj=0x7fd8e800b9c0) at util/virobject.c:338
#3 0x00007fd8f7ac477e in virKeepAliveTimer (timer=＜optimized out＞, opaque=0x7fd8e800b9c0) at rpc/virkeepalive.c:177
#4 0x00007fd8f7e5c9cf in libvirt_virEventInvokeTimeoutCallback () from /usr/lib64/python2.7/site-packages/libvirtmod.so
#5 0x00007fd8ff64db94 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#6 0x00007fd8ff64f1ad in PyEval_EvalCodeEx () from /lib64/libpython2.7.so.1.0
#7 0x00007fd8ff64d85f in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#8 0x00007fd8ff64d950 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#9 0x00007fd8ff64d950 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#10 0x00007fd8ff64f1ad in PyEval_EvalCodeEx () from /lib64/libpython2.7.so.1.0
#11 0x00007fd8ff5dc098 in function_call () from /lib64/libpython2.7.so.1.0
#12 0x00007fd8ff5b7073 in PyObject_Call () from /lib64/libpython2.7.so.1.0
#13 0x00007fd8ff5c6085 in instancemethod_call () from /lib64/libpython2.7.so.1.0
#14 0x00007fd8ff5b7073 in PyObject_Call () from /lib64/libpython2.7.so.1.0
#15 0x00007fd8ff648ff7 in PyEval_CallObjectWithKeywords () from /lib64/libpython2.7.so.1.0
#16 0x00007fd8ff67d7e2 in t_bootstrap () from /lib64/libpython2.7.so.1.0
#17 0x00007fd8ff358df3 in start_thread () from /lib64/libpthread.so.0
#18 0x00007fd8fe97d3ed in clone () from /lib64/libc.so.6
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It was left there after removing a macro it was part of in first
version or so. Now it will always be NULL.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Commit f4ef3a71 made a variation of virNetDevSetMAC that would return
without logging an error message if errno was set to
EADDRNOTAVAIL. This errno is set by some SRIOV VF drivers (in
particular igbvf) when they fail to set the device's MAC address due
to the PF driver refusing the request. This is useful if we want to
try a different method of setting the VF MAC address before giving up
(Commit 86556e16 actually does this, setting the desired MAC address
to the "admin MAC in the PF, then detaching and reattaching the VF
netdev driver to force a reinit of the MAC address).
During testing of Bug 1442040 t was discovered that the ixgbe driver
returns EPERM in this situation, so this patch changes the exception
case for silent+non-terminal failure to account for this difference.
Completes resolution to: https://bugzilla.redhat.com/1415609 (RHEL 7.4)
https://bugzilla.redhat.com/1442040 (RHEL 7.3.z)
The current fallback stub for virNetDevSetCoalesce is inside an
earlier conditional block. This deals with the feature being
missing on older Linux platforms. We need a second fallback stub
though, outside the top level conditional, to ensure builds work
on Win32/FreeBSD platforms too.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch makes use of the virNetDevSetCoalesce() function to make
appropriate settings effective for devices that support them.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1414627
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
We are currently parsing only rx/frames/max because that's the only
value that makes sense for us. The tun device just added support for
this one and the others are only supported by hardware devices which
we don't need to worry about as the only way we'd pass those to the
domain is using <hostdev/> or <interface type='hostdev'/>. And in
those cases the guest can modify the settings itself.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
That function is able to configure coalesce settings for an interface,
similarly to 'ethtool -C'. This function also updates back the
structure so that it contains actual data on the device (if the device
doesn't support some settings kernel might just return 0 and not set
whatever is not supported), so this way we'll have up-to-date
information in the live domain XML.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reported by Rafał Wojciechowski <it@rafalwojciechowski.pl>.
Thread 1 (Thread 0x7f194b99d700 (LWP 5631)):
0 virNetDevGetifaddrsAddress (addr=0x7f194b99c7c0, ifname=0x7f193400e2b0 "ovirtmgmt") at util/virnetdevip.c:738
1 virNetDevIPAddrGet (ifname=0x7f193400e2b0 "ovirtmgmt", addr=addr@entry=0x7f194b99c7c0) at util/virnetdevip.c:795
2 0x00007f19467800d6 in networkGetNetworkAddress (netname=<optimized out>, netaddr=netaddr@entry=0x7f1924013f18) at network/bridge_driver.c:4780
3 0x00007f193e43a33c in qemuProcessGraphicsSetupNetworkAddress (listenAddr=0x7f19340f7650 "127.0.0.1", glisten=0x7f1924013f10) at qemu/qemu_process.c:4062
4 qemuProcessGraphicsSetupListen (vm=<optimized out>, graphics=0x7f1924014f10, cfg=0x7f1934119f00) at qemu/qemu_process.c:4133
5 qemuProcessSetupGraphics (flags=17, vm=0x7f19240155d0, driver=0x7f193411f1d0) at qemu/qemu_process.c:4196
6 qemuProcessPrepareDomain (conn=conn@entry=0x7f192c00ab50, driver=driver@entry=0x7f193411f1d0, vm=vm@entry=0x7f19240155d0, flags=flags@entry=17) at qemu/qemu_process.c:4969
7 0x00007f193e4417c0 in qemuProcessStart (conn=conn@entry=0x7f192c00ab50, driver=driver@entry=0x7f193411f1d0, vm=0x7f19240155d0,asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_START, migrateFrom=migrateFrom@entry=0x0, migrateFd=migrateFd@entry=-1, migratePath=migratePath@entry=0x0,snapshot=snapshot@entry=0x0, vmop=vmop@entry=VIR_NETDEV_VPORT_PROFILE_OP_CREATE, flags=17, flags@entry=1) at qemu/qemu_process.c:5553
Man page for getifaddrs also states that the "ifa_addr" may contain
a null pointer which happens if there is an existing network interface
on the host without IP address.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In the RPC client event loop code, if poll() returns only a POLLHUP
or POLLERR status, then we end up reporting a bogus error message:
error: failed to connect to the hypervisor
error: An error occurred, but the cause is unknown
We do actually report an error, but we virNetClientMarkClose method
has already captured the error status before we report it, so the
real error gets thrown away. The key fix is to report the error
before calling virNetClientMarkClose(). In changing this, we also
split out reporting of POLLHUP vs POLLERR to make any future bugs
easier to diagnose.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In the vcpu hotplug code if exit from the monitor failed we would still
attempt to save the status XML. When the daemon is terminated the
monitor socket is closed. In such case, the written status XML would not
contain the monitor path and thus be invalid.
Avoid this issue by only saving status XML on success of the monitor
command.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1439452
The history of USB controller for ppc64 guest is complex and goes
back to libvirt 1.3.1 where the fun started.
Prior Libvirt 1.3.1 if no model for USB controller was specified
we've simply passed "-usb" on QEMU command line.
Since Libvirt 1.3.1 there is a patch (8156493d8d) that fixes this
issue by using "-device pci-ohci,..." but it breaks migration with
older Libvirts which was agreed that's acceptable. However this
patch didn't reflect this change in the domain XML and the model
was still missing.
Since Libvirt 2.2.0 there is a patch (f55eaccb0c) that fixes the
issue with not setting the USB model into domain XML which we need
to know about to not break the migration and since the default
model was *pci-ohci* it was used as default in this patch as well.
This patch tries to take all the previous changes into account and
also change the default for newly defined domains that don't specify
any model for USB controller.
The VIR_DOMAIN_DEF_PARSE_ABI_UPDATE is set only if new domain is
defined or new device is added into a domain which means that in
all other cases we will use the old *pci-ohci* model instead of the
better and not broken *nec-usb-xhci* model.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1373184
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
So far there is probably no change that is allowed to be done
by the VIR_DOMAIN_DEF_PARSE_ABI_UPDATE flag that would break
guest ABI but this may change in the future.
This introduces new VIR_DOMAIN_DEF_PARSE_ABI_UPDATE_MIGRATION
which should be used only for ABI updates that are "safe" for
persistent migration.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
With QEMU older than 2.9.0 libvirt uses CPUID instruction to determine
what CPU features are supported on the host. This was later used when
checking compatibility of guest CPUs. Since QEMU 2.9.0 we ask QEMU for
the host CPU data. But the two methods we use usually provide disjoint
sets of CPU features because QEMU/KVM does not support all features
provided by the host CPU and on the other hand it can enable some
feature even if the host CPU does not support them.
So if there is a domain which requires a CPU features disabled by
QEMU/KVM, libvirt will refuse to start it with QEMU > 2.9.0 as its guest
CPU is incompatible with the host CPU data we got from QEMU. But such
domain would happily start on older QEMU (of course, the features would
be missing the guest CPU). To fix this regression, we need to combine
both CPU feature sets when checking guest CPU compatibility.
https://bugzilla.redhat.com/show_bug.cgi?id=1439933
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Sometimes we want to call virCPUGetHost only when it is implemented for
a given architecture to avoid logging expected and possibly misleading
errors. The new virCPUGetHostIsSupported API may be used to guard such
calls to virCPUGetHost.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Because of the changes done in the previous commit, @host is already a
migratable CPU and there's no need to do any additional filtering.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We already know from QEMU which CPU features will block migration. Let's
use this information to make a migratable copy of the host CPU model and
use it for updating guest CPU specification. This will allow us to drop
feature filtering from virCPUUpdate where it was just a hack.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Soon we will need to store multiple host CPU definitions in
virQEMUCapsHostCPUData and qemuCaps users will want to request the one
they need. This patch introduces virQEMUCapsHostCPUType enum which will
be used for specifying the requested CPU definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We need to store several CPU related data structure for both KVM and
TCG. So instead of keeping two different copies of everything let's
make a virQEMUCapsHostCPUData struct and use it twice.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This introduces virQEMUCapsHostCPUDataCopy which will later be
refactored a bit and called twice from virQEMUCapsNewCopy.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Apple have annotated all SASL functions as deprecated for
unknown reasons. Since they still work, lets just ignore
the warnings. If Apple finally delete the SASL functions
our configure check should already catch that
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
CLang's optimizer is more aggressive at inlining functions than
gcc and so will often inline functions that our tests want to
mock-override. This causes the test to fail in bizarre ways.
We don't want to disable inlining completely, but we must at
least prevent inlining of mocked functions. Fortunately there
is a 'noinline' attribute that lets us control this per function.
A syntax check rule is added that parses tests/*mock.c to extract
the list of functions that are mocked (restricted to names starting
with 'vir' prefix). It then checks that src/*.h header file to
ensure it has a 'ATTRIBUTE_NOINLINE' annotation. This should prevent
use from bit-rotting in future.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Use "virNetworkObj" as a prefix for any external API in virnetworkobj.
Also a couple of functions were local to virnetworkobj.c, so remove their
external defs in virnetworkobj.h.
Rename the API to be a better description of what it does. Besides, a
subsequent patch will rename virNetworkAssignDef to virNetworkObjAssignDef
so rather than make that patch confusing we'll take the intermittent step
in this patch.
In an effort to be consistent with the source module, alter the function
prototypes to follow the similar style of source with the "type" on one
line followed by the function name and arguments on subsequent lines with
with argument getting it's own line.
Alter the format of the code to follow more recent style guidelines of
two empty lines between functions, function decls with "[static] type"
on one line followed by function name with arguments to functions each
on one line.
Move all the virNetworkObj related API/data structures into their own
modules virnetworkobj.{c,h} from the network_conf.{c,h}
Purely code motion at this point plus adjustments to cleanly build
When hyperv code generator for WMI classes identifies common
properties, it needs to take into account array type as a distinct
type, i.e string != string[]. This is the case where v1 of the
Msvm_VirtualSystemSettingData has Notes property as string whereas v2
uses Notes[], therefore they have to be treated as different fields and
cannot be placed in the "common" struct.
Fix xlconfig channel tests when OOM testing is enabled.
TEST: xlconfigtest
32) Xen XL-2-XML Format channel-unix ... OK
Test OOM for nalloc=55 ................................................*** Error in `/home/jfehlig/virt/upstream/libvirt/tests/.libs/xlconfigtest': double free or corruption (fasttop): 0x0000000000679550 ***
...
(gdb) bt
#0 0x00007ffff36875af in raise () from /lib64/libc.so.6
#1 0x00007ffff36889aa in abort () from /lib64/libc.so.6
#2 0x00007ffff36c5150 in __libc_message () from /lib64/libc.so.6
#3 0x00007ffff36cb4f6 in malloc_printerr () from /lib64/libc.so.6
#4 0x00007ffff36cbcee in _int_free () from /lib64/libc.so.6
#5 0x00007ffff782babf in virFree (ptrptr=0x7fffffffdca8) at util/viralloc.c:582
#6 0x000000000042f2f3 in xenParseXLChannel (conf=0x677350, def=0x6815b0) at xenconfig/xen_xl.c:788
#7 0x000000000042f44e in xenParseXL (conf=0x677350, caps=0x6832b0, xmlopt=0x67f6e0) at xenconfig/xen_xl.c:828
#8 0x00000000004105a3 in testCompareFormatXML (
xlcfg=0x6811e0 "/home/jfehlig/virt/upstream/libvirt/tests/xlconfigdata/test-channel-unix.cfg",
xml=0x681110 "/home/jfehlig/virt/upstream/libvirt/tests/xlconfigdata/test-channel-unix.xml", replaceVars=false)
at xlconfigtest.c:152
When a channel is successfully parsed and its path and name fields
assigned from local variables, set the local variables to NULL to
prevent a double free on error.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Introduce new wrapper functions without *Machine* in the function
name that take the whole virDomainDef structure as argument and
call the existing functions with *Machine* in the function name.
Change the arguments of existing functions to *machine* and *arch*
because they don't need the whole virDomainDef structure and they
could be used in places where we don't have virDomainDef.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Since the disks are copied by qemu, there's no need to enforce
cache=none. Thankfully the code that added qemuMigrateDisk did not break
existing configs, since if you don't select any disk to migrate
explicitly the code behaves sanely.
The logic for determining whether a disk should be migrated is
open-coded since using qemuMigrateDisk twice would be semantically
incorrect.
Without this added enum value, nodedev-dumpxml of a GEN4 (PCIe 4.0)
card will fail (due to the unrecognized link speed), and since
nodedev-detach and nodedev-reattach internally do a dumpxml+parse,
they will also fail. With this patch, all those operations succeed.
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Fix xlconfigtest runs build for --enable-test-oom on
Xen XL-2-XML Parse new-disk
#0 0x00007ffff3bd791f in raise () from /lib64/libc.so.6
#1 0x00007ffff3bd951a in abort () from /lib64/libc.so.6
#2 0x00007ffff3c1b200 in __libc_message () from /lib64/libc.so.6
#3 0x00007ffff3c2488a in _int_free () from /lib64/libc.so.6
#4 0x00007ffff3c282bc in free () from /lib64/libc.so.6
#5 0x00007ffff7864fcb in virFree (ptrptr=ptrptr@entry=0x7fffffffd868) at util/viralloc.c:582
#6 0x00007ffff78776e5 in virConfFreeValue (val=<optimized out>) at util/virconf.c:178
==> #7 0x0000000000425759 in xenFormatXLDomainDisks (def=0x7fffffffd8c0, def=0x7fffffffd8c0, conf=0x658220)
at xenconfig/xen_xl.c:1159
#8 xenFormatXL (def=def@entry=0x66ec20, conn=conn@entry=0x668cf0) at xenconfig/xen_xl.c:1558
#9 0x000000000040ea1d in testCompareParseXML (replaceVars=<optimized out>,
xml=0x65f5e0 "/home/wtenhave/WORK/libvirt/history/libvirt/tests/xlconfigdata/test-fullvirt-ovmf.xml",
xlcfg=0x65f6b0 "/home/wtenhave/WORK/libvirt/history/libvirt/tests/xlconfigdata/test-fullvirt-ovmf.cfg")
at xlconfigtest.c:105
#10 testCompareHelper (data=<optimized out>) at xlconfigtest.c:205
#11 0x000000000041079a in virTestRun (title=title@entry=0x431cf0 "Xen XL-2-XML Parse fullvirt-ovmf",
body=body@entry=0x40e720 <testCompareHelper>, data=data@entry=0x7fffffffda50) at testutils.c:247
#12 0x000000000040ebc2 in mymain () at xlconfigtest.c:256
#13 0x0000000000411070 in virTestMain (argc=1, argv=0x7fffffffdc08, func=0x40f2c0 <mymain>) at testutils.c:992
#14 0x00007ffff3bc2401 in __libc_start_main () from /lib64/libc.so.6
#15 0x000000000040e5da in _start ()
symmetry seems missing its sibbling coded functionality
demonstrated under functions;
xenFormatXLUSBController()
xenFormatXLUSB()
xenFormatXLDomainChannels()
xenFormatXMDisks
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
Fix xlconfigtest runs build for --enable-test-oom on
Xen XL-2-XML Parse channel-pty
Program received signal SIGSEGV, Segmentation fault.
#0 0x00007ffff3c2b373 in __strchr_sse2 () from /lib64/libc.so.6
==> #1 0x00007ffff7875701 in virConfSaveValue (buf=buf@entry=0x7fffffffd8a0, val=val@entry=0x674750) at util/virconf.c:290
#2 0x00007ffff7875668 in virConfSaveValue (buf=buf@entry=0x7fffffffd8a0, val=<optimized out>) at util/virconf.c:306
#3 0x00007ffff78757ef in virConfSaveEntry (buf=buf@entry=0x7fffffffd8a0, cur=cur@entry=0x674780) at util/virconf.c:338
#4 0x00007ffff78783eb in virConfWriteMem (memory=0x665570 "", len=len@entry=0x7fffffffd910, conf=conf@entry=0x65b940)
at util/virconf.c:1543
#5 0x000000000040eccb in testCompareParseXML (replaceVars=<optimized out>, xml=<optimized out>,
xlcfg=0x662c00 "/home/wtenhave/WORK/libvirt/OOMtesting/libvirt-devel/tests/xlconfigdata/test-channel-pty.cfg")
at xlconfigtest.c:108
#6 testCompareHelper (data=<optimized out>) at xlconfigtest.c:205
#7 0x0000000000410b3a in virTestRun (title=title@entry=0x432cc0 "Xen XL-2-XML Parse channel-pty",
body=body@entry=0x40e9b0 <testCompareHelper>, data=data@entry=0x7fffffffd9f0) at testutils.c:247
#8 0x000000000040f322 in mymain () at xlconfigtest.c:278
#9 0x0000000000411410 in virTestMain (argc=1, argv=0x7fffffffdba8, func=0x40f660 <mymain>) at testutils.c:992
#10 0x00007ffff3bc0401 in __libc_start_main () from /lib64/libc.so.6
#11 0x000000000040e86a in _start ()
(gdb) frame 1
#1 0x00007ffff7875701 in virConfSaveValue (buf=buf@entry=0x7fffffffd8a0, val=val@entry=0x674750) at util/virconf.c:290
290 if (strchr(val->str, '\n') != NULL) {
(gdb) print *val
$1 = {type = VIR_CONF_STRING, next = 0x0, l = 0, str = 0x0, list = 0x0}
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
Mostly code motion to move nwfilterConnectListNWFilters into nwfilterobj.c
and rename to virNWFilterObjGetNames.
Also includes a couple of variable name adjustments to keep code consistent
with other drivers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Mostly code motion from nwfilter_driver to virnwfilterobj with one caveat
to add the virNWFilterObjListFilter typedef and pass it as an 'aclfilter'
argument to allow for future possible test driver adjustments to count
the number of filters (similar to how node device has done this).
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1420740
If the parent is not a scsi_host, then we can just happily return since
we won't be removing a vport.
Fixes a bug with the following output:
$ virsh pool-destroy host4_hba_pool
error: Failed to destroy pool host4_hba_pool
error: internal error: Invalid adapter name 'pci_0000_10_00_1' for SCSI pool
$
https://bugzilla.redhat.com/show_bug.cgi?id=1233129
The virStoragePoolObjSourceFindDuplicate logic used by PoolCreateXML
and PoolDefineXML avoids comparing the new definition against "other"
pool types. This can cause unexpected corruption if two different pool
source types used the same source device path. For example, a 'disk'
pool using source type device=/dev/sdc could be unwittingly overwritten
by using /dev/sdc for a 'logical' pool which also uses the source
device path.
So rather than blindly ignoring those checks when def->type !=
pool->def->type - have the pool->def->type switch logic handle the
check for which def->type's should be checked.
Refactor virStoragePoolObjSourceFindDuplicate into smaller units
separated by the "supported" pool source type. The ISCSI, FS,
LOGICAL, DISK, and ZFS pools can use "<source>... <device='%s'/>...
</source>".
Alter the logic slightly to return the matching pool or NULL rather
than setting matchpool = pool and break. Easier to read that way.
In the effort to reduce the virStoragePoolObjSourceFindDuplicate logic,
create a new helper which will handle all the ISCSI type differences.
Alter things just a little bit to return NULL or pool rather than
using breaks and matchpool = pool, then break. Also rather than creating
variables withing the if...else if... conditions, have them all at the
top of the function to make things a bit easier to read.
Refactor virStoragePoolObjSourceFindDuplicate into smaller units
separated by the "supported" pool source type. The DIR, GLUSTER,
and NETFS pools all can use "<source>... <dir='%s'/>... </source>".
Alter the logic slightly to return the matching pool or NULL rather
than setting matchpool = pool and break. Easier to read that way.
Fix the build with clang:
util/virperf.c:86:27: error: use of GNU 'missing =' extension
in designator [-Werror,-Wgnu-designator]
[VIR_PERF_EVENT_MBML] {
^
=
The code that validates whether an internal snapshot is possible would
reject an empty but not-readonly drive. Since floppies can have this
property, add a check for emptiness.
The property is necessary also for the disk using the source (e.g. cdrom)
which needs to be kept readonly.
Commit '462c4b66' was a bit too aggressive in this aspect, since the
readonly flag is set only while parsing.
The virPerfGetEvent method pointlessly checks for a NULL
parameter and the range of an enum value. The whole point
of using an enum is that we can avoid such checks. Just
replace calls to virPerfGetEvent, with perf->events[type]
array access.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virPerfGetEventAttr method contains a totally pointless
loop. Remove it, verify the array size statically, and then
just use an array index to access the perf event.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
==20406== 8 bytes in 1 blocks are definitely lost in loss record 24 of 1,059
==20406== at 0x4C2CF55: calloc (vg_replace_malloc.c:711)
==20406== by 0x54BF530: virAllocN (viralloc.c:191)
==20406== by 0x54D37C4: virConfGetValueStringList (virconf.c:1001)
==20406== by 0x144E4E8E: virQEMUDriverConfigLoadFile (qemu_conf.c:835)
==20406== by 0x1452A744: qemuStateInitialize (qemu_driver.c:664)
==20406== by 0x55DB585: virStateInitialize (libvirt.c:770)
==20406== by 0x124570: daemonRunStateInit (libvirtd.c:881)
==20406== by 0x5532990: virThreadHelper (virthread.c:206)
==20406== by 0x8C82493: start_thread (in /lib64/libpthread-2.24.so)
==20406== by 0x8F7FA1E: clone (in /lib64/libc-2.24.so)
==20406== 4 bytes in 1 blocks are definitely lost in loss record 6 of 1,059
==20406== at 0x4C2AF3F: malloc (vg_replace_malloc.c:299)
==20406== by 0x8F17D39: strdup (in /lib64/libc-2.24.so)
==20406== by 0x552C0E0: virStrdup (virstring.c:784)
==20406== by 0x54D3622: virConfGetValueString (virconf.c:945)
==20406== by 0x144E4692: virQEMUDriverConfigLoadFile (qemu_conf.c:687)
==20406== by 0x1452A744: qemuStateInitialize (qemu_driver.c:664)
==20406== by 0x55DB585: virStateInitialize (libvirt.c:770)
==20406== by 0x124570: daemonRunStateInit (libvirtd.c:881)
==20406== by 0x5532990: virThreadHelper (virthread.c:206)
==20406== by 0x8C82493: start_thread (in /lib64/libpthread-2.24.so)
==20406== by 0x8F7FA1E: clone (in /lib64/libc-2.24.so)
Commit a4a39d90 added a check that checks for VFIO support with mediated
devices. The problem is that the hostdev preparing functions behave like
a fallthrough if device of that specific type doesn't exist. However,
the check for VFIO support was independent of the existence of a mdev
device which caused the guest to fail to start with any device to be
directly assigned if VFIO was disabled/unavailable in the kernel.
The proposed change first ensures that it makes sense to check for VFIO
support in the first place, and only then performs the VFIO support check
itself.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1441291
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Mostly code motion to move storageConnectList[Defined]StoragePools
and similar test driver code into virstorageobj.c and rename to
virStoragePoolObjGetNames.
Also includes a couple of variable name adjustments to keep code consistent
with other drivers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Unify the NumOf[Defined]StoragePools API into virstorageobj.c from
storage_driver and test_driver. The only real difference between the
two is the test driver doesn't call using the aclfilter API.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Mostly code motion to move storagePoolListVolumes code into virstorageobj.c
and rename to virStoragePoolObjVolumeGetNames.
Also includes a couple of variable name adjustments to keep code consistent
with other drivers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Unify the NumOfVolumes API into virstorageobj.c from storage_driver and
test_driver. The only real difference between the two is the test driver
doesn't call using the aclfilter API.
Signed-off-by: John Ferlan <jferlan@redhat.com>
This removes the hacky extern global variable and modifies the
test code to properly create QEMU capabilities cache for QEMU
binaries used in our tests.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit 252610f7dd switched to use hash to store servers.
Function virHashGetItems returns allocated array which needs
to be freed also for successful path, not only if there is
an error.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit 14319c81a0 introduced CPU host model in domain capabilities
and the *hostmodel* variable is always filled by virCPUDefCopy()
and needs to be freed.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
For both virNodeDeviceObjNumOfDevices and virNodeDeviceObjGetNames, the
check should be if the aclfilter doesn't exist or if it does exist, then
it must pass
Use the return value of virObjectRef directly. This way, it's easier
for another reader to identify the reason why the additional reference
is required.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
This attribute is not needed here, since @mon is in use.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Implement qemuMonitorRegister() as there is already a
qemuMonitorUnregister() function. This way it may be easier to
understand the code paths.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
This way qemuDomainLogContextRef() and qemuDomainLogContextFree() is
no longer needed. The naming qemuDomainLogContextFree() was also
somewhat misleading. Additionally, it's easier to turn
qemuDomainLogContext in a self-locking object.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
There were multiple race conditions that could lead to segmentation
faults. The first precondition for this is qemuProcessLaunch must fail
sometime shortly after starting the new QEMU process. The second
precondition for the segmentation faults is that the new QEMU process
dies - or to be more precise the QEMU monitor has to be closed
irregularly. If both happens during qemuProcessStart (starting a
domain) there are race windows between the thread with the event
loop (T1) and the thread that is starting the domain (T2).
First segmentation fault scenario:
If qemuProcessLaunch fails during qemuProcessStart the code branches
to the 'stop' path where 'qemuMonitorSetDomainLog(priv->mon, NULL,
NULL, NULL)' will set the log function of the monitor to NULL (done in
T2). In the meantime the event loop of T1 will wake up with an EOF
event for the QEMU monitor because the QEMU process has died. The
crash occurs if T1 has checked 'mon->logFunc != NULL' in qemuMonitorIO
just before the logFunc was set to NULL by T2. If this situation
occurs T1 will try to call mon->logFunc which leads to the
segmentation fault.
Solution:
Require the monitor lock for setting the log function.
Backtrace:
0 0x0000000000000000 in ?? ()
1 0x000003ffe9e45316 in qemuMonitorIO (watch=<optimized out>,
fd=<optimized out>, events=<optimized out>, opaque=0x3ffe08aa860) at
../../src/qemu/qemu_monitor.c:727
2 0x000003fffda2e1a4 in virEventPollDispatchHandles (nfds=<optimized
out>, fds=0x2aa000fd980) at ../../src/util/vireventpoll.c:508
3 0x000003fffda2e398 in virEventPollRunOnce () at
../../src/util/vireventpoll.c:657
4 0x000003fffda2ca10 in virEventRunDefaultImpl () at
../../src/util/virevent.c:314
5 0x000003fffdba9366 in virNetDaemonRun (dmn=0x2aa000cc550) at
../../src/rpc/virnetdaemon.c:818
6 0x000002aa00024668 in main (argc=<optimized out>, argv=<optimized
out>) at ../../daemon/libvirtd.c:1541
Second segmentation fault scenario:
If qemuProcessLaunch fails it will unref the log context and with
invoking qemuMonitorSetDomainLog(priv->mon, NULL, NULL, NULL)
qemuDomainLogContextFree() will be invoked. qemuDomainLogContextFree()
invokes virNetClientClose() to close the client and cleans everything
up (including unref of _virLogManager.client) when virNetClientClose()
returns. When T1 is now trying to report 'qemu unexpectedly closed the
monitor' libvirtd will crash because the client has already been
freed.
Solution:
As the critical section in qemuMonitorIO is protected with the monitor
lock we can use the same solution as proposed for the first
segmentation fault.
Backtrace:
0 virClassIsDerivedFrom (klass=0x3100979797979797,
parent=0x2aa000d92f0) at ../../src/util/virobject.c:169
1 0x000003fffda659e6 in virObjectIsClass (anyobj=<optimized out>,
klass=<optimized out>) at ../../src/util/virobject.c:365
2 0x000003fffda65a24 in virObjectLock (anyobj=0x3ffe08c1db0) at
../../src/util/virobject.c:317
3 0x000003fffdba4688 in
virNetClientIOEventLoop (client=client@entry=0x3ffe08c1db0,
thiscall=thiscall@entry=0x2aa000fbfa0) at
../../src/rpc/virnetclient.c:1668
4 0x000003fffdba4b4c in
virNetClientIO (client=client@entry=0x3ffe08c1db0,
thiscall=0x2aa000fbfa0) at ../../src/rpc/virnetclient.c:1944
5 0x000003fffdba4d42 in
virNetClientSendInternal (client=client@entry=0x3ffe08c1db0,
msg=msg@entry=0x2aa000cc710, expectReply=expectReply@entry=true,
nonBlock=nonBlock@entry=false) at ../../src/rpc/virnetclient.c:2116
6 0x000003fffdba6268 in
virNetClientSendWithReply (client=0x3ffe08c1db0, msg=0x2aa000cc710) at
../../src/rpc/virnetclient.c:2144
7 0x000003fffdba6e8e in virNetClientProgramCall (prog=0x3ffe08c1120,
client=<optimized out>, serial=<optimized out>, proc=<optimized out>,
noutfds=<optimized out>, outfds=0x0, ninfds=0x0, infds=0x0,
args_filter=0x3fffdb64440
<xdr_virLogManagerProtocolDomainReadLogFileArgs>, args=0x3ffffffe010,
ret_filter=0x3fffdb644c0
<xdr_virLogManagerProtocolDomainReadLogFileRet>, ret=0x3ffffffe008) at
../../src/rpc/virnetclientprogram.c:329
8 0x000003fffdb64042 in
virLogManagerDomainReadLogFile (mgr=<optimized out>, path=<optimized
out>, inode=<optimized out>, offset=<optimized out>, maxlen=<optimized
out>, flags=0) at ../../src/logging/log_manager.c:272
9 0x000003ffe9e0315c in qemuDomainLogContextRead (ctxt=0x3ffe08c2980,
msg=0x3ffffffe1c0) at ../../src/qemu/qemu_domain.c:4422
10 0x000003ffe9e280a8 in qemuProcessReadLog (logCtxt=<optimized out>,
msg=msg@entry=0x3ffffffe288) at ../../src/qemu/qemu_process.c:1800
11 0x000003ffe9e28206 in qemuProcessReportLogError (logCtxt=<optimized
out>, msgprefix=0x3ffe9ec276a "qemu unexpectedly closed the monitor")
at ../../src/qemu/qemu_process.c:1836
12 0x000003ffe9e28306 in
qemuProcessMonitorReportLogError (mon=mon@entry=0x3ffe085cf10,
msg=<optimized out>, opaque=<optimized out>) at
../../src/qemu/qemu_process.c:1856
13 0x000003ffe9e452b6 in qemuMonitorIO (watch=<optimized out>,
fd=<optimized out>, events=<optimized out>, opaque=0x3ffe085cf10) at
../../src/qemu/qemu_monitor.c:726
14 0x000003fffda2e1a4 in virEventPollDispatchHandles (nfds=<optimized
out>, fds=0x2aa000fd980) at ../../src/util/vireventpoll.c:508
15 0x000003fffda2e398 in virEventPollRunOnce () at
../../src/util/vireventpoll.c:657
16 0x000003fffda2ca10 in virEventRunDefaultImpl () at
../../src/util/virevent.c:314
17 0x000003fffdba9366 in virNetDaemonRun (dmn=0x2aa000cc550) at
../../src/rpc/virnetdaemon.c:818
18 0x000002aa00024668 in main (argc=<optimized out>, argv=<optimized
out>) at ../../daemon/libvirtd.c:1541
Other code parts where the same problem was possible to occur are
fixed as well (qemuMigrationFinish, qemuProcessStart, and
qemuDomainSaveImageStartVM).
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reported-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Unify the *ListDevice API into virnodedeviceobj.c from node_device_driver
and test_driver. The only real difference between the two is that the test
driver doesn't call the aclfilter API. The name of the new API follows that
of other drivers to "GetNames".
NB: Change some variable names to match what they really are - consistency
with other drivers. Also added a clear of the input names.
This also allows virNodeDeviceObjHasCap to be static to virnodedeviceobj
Signed-off-by: John Ferlan <jferlan@redhat.com>
Unify the NumOfDevices API into virnodedeviceobj.c from node_device_driver
and test_driver. The only real difference between the two is that the test
driver doesn't call the aclfilter API.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Clean up the code to adhere to more of the standard two spaces between
functions, separate lines for type and function name, one argument per line.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Unlike other drivers, this is a test driver only API. Still combining
the logic of testConnectListInterfaces and testConnectListDefinedInterfaces
makes things a bit easier in the long run.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Unlike other drivers, this is a test driver only API. Still combining
the logic of testConnectNumOfInterfaces and testConnectNumOfDefinedInterfaces
makes things a bit easier in the long run.
Signed-off-by: John Ferlan <jferlan@redhat.com>
This patch reworks the Hyper-V driver structs and the code generator
to provide seamless support for both Hyper-V 2008 and 2012 or newer.
This does not implement any new libvirt APIs, it just adapts existing
2008-only driver to also handle 2012 and newer by sharing as much
driver code as possible (currently it's all of it :-)). This is needed
to set the foundation before we can move forward with implementing the
rest of the driver APIs.
With the 2012 release, Microsoft introduced "v2" version of Msvm_* WMI
classes. Those are largely the same as "v1" (used in 2008) but have some
new properties as well as need different wsman request URIs. To
accomodate those differences, most of work went into the code generator
so that it's "aware" of possibility of multiple versions of the same WMI
class and produce C code accordingly.
To accomplish this the following changes were made:
* the abstract hypervObject struct's data member was changed to a union
that has "common", "v1" and "v2" members. Those are structs that
represent WMI classes that we get back from wsman response. The
"common" struct has members that are present in both "v1" and "v2"
which the driver API callbacks can use to read the data from in
version-independent manner (if version-specific member needs to be
accessed the driver can check priv->wmiVersion and read from "v1" or
"v2" as needed). Those structs are guaranteed to be memory aligned
by the code generator (see the align_property_members implementation
that takes care of that)
* the generator produces *_WmiInfo for each WMI class "family" that
holds an array of hypervWmiClassInfoPtr each providing information
as to which request URI to use for each "version" of given WMI class
as well as XmlSerializerInfo struct needed to unserilize WS-MAN
responsed into the data structs. The driver uses those to make proper
WS-MAN request depending on which version it's connected to.
* the generator no longer produces "helper" functions such as
hypervGetMsvmComputerSystemList as those were originally just simple
wrappers around hypervEnumAndPull, instead those were hand-written
now (to keep driver changes minimal). The reason is that we'll have
more code coming implementing missing libvirt APIs and surely code
patterns will emerge that would warrant more useful "utility" functions
like that.
* a hypervInitConnection was added to the driver which "detects"
Hyper-V version by testing simple wsman request using v2 then falling
back to v1, obviously if both fail, the we're erroring out.
To express how the above translates in code:
void
hypervImplementSomeLibvirtApi(virConnectPtr conn, ...)
{
hypervPrivate *priv = conn->privateData;
virBuffer query = VIR_BUFFER_INITIALIZER;
hypervWqlQuery wqlQuery = HYPERV_WQL_QUERY_INITIALIZER;
Msvm_ComputerSystem *list = NULL; /* typed hypervObject instance */
/* the WmiInfo struct has the data needed for wsman request and
* response handling for both v1 and v2 */
wqlQuery.info = Msvm_ComputerSystem_WmiInfo;
wqlQuery.query = &query;
virBufferAddLit(&query, "select * from Msvm_ComputerSystem");
if (hypervEnumAndPull(priv, &wqlQuery, (hypervObject **) &list) < 0) {
goto cleanup;
}
if (list == NULL) {
/* none found */
goto cleanup;
}
/* works with v1 and v2 */
char *vmName = list->data.common->Name;
/* access property that is in v2 only */
if (priv->wmiVersion == HYPERV_WMI_VERSION_V2)
char *foo = list->data.v2->V2Property;
else
char *foo = list->data.v1->V1Property;
cleanup:
hypervFreeObject(priv, (hypervObject *)list);
}
Currently named as hypervObjecUnified to keep code
compilable/functional until all bits are in place.
This struct is a result of unserializing WMI request response.
Therefore, it needs to be able to deal with different "versions" of the
same WMI class. To accomplish this, the "data" member was turned in to
a union which:
* has a "common" member that contains only WMI class fields that are
safe to access and are present in all "versions". This is ensured by
the code generator that takes care of proper struct memory alignment
between "common", "v1", "v2" etc members. This memeber is to be used
by the driver code wherever the API implementation can be shared for
all supported hyper-v versions.
* the "v1" and "v2" member can be used by the driver code to handle
version specific cases.
Example:
Msvm_ComputerSystem *vm = NULL;
...
hypervGetVirtualMachineList(priv, wqlQuery, *vm);
...
/* safe for "v1" and "v2" */
char *vmName = vm->data.common->Name;
/* or if one really needs special handling for "v2" */
if (priv->wmiVersion == HYPERV_WMI_VERSION_V2) {
char *foo = vm->data.v2->SomeV2OnlyField;
}
In other words, driver should not concern itself with existence of "v1"
or "v2" of WMI class unless absolutely necessary.
This struct is to be used to carry all the information necessary to
issue wsman requests for given WMI class. Those will be defined by the
generator code (as lists) so that they are handy for the driver code to
"extract" needed info depending on which hyper-v we're connected to.
For example:
hypervWmiClassInfoListPtr Msvm_ComputerSystem_WmiInfo = {
.count = 2
{
{
.name = "Msvm_ComputerSystem",
.version = "v1",
.rootUri = "http://asdf.com",
...
},
{
.name = "Msvm_ComputerSystem",
.version = "v2",
.rootUri = "http://asdf.com/v2",
...
},
}
};
Then the driver code will grab either "v1" or "v2" to pass info wsman
API, depending on hypervPrivate->wmiVersion value.
Hyper-V 2012+ uses a new "v2" version of Msvm_* WMI classes so we will
store that info in hypervPrivate so that it is easily accessbile in the
driver API callbacks and handled accordingly.
https://bugzilla.redhat.com/show_bug.cgi?id=1439132
Add "bsd" to the list of format types to not checked during blkid
processing even though it supposedly knows the format - for some
(now unknown) reason it's returning partition table not found. So
let's just let PARTED handle "bsd" too.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1439132
Commit id 'a48c674fb' added a check for format types "dvh" and "pc98"
to use the parted print processing instead of using blkid processing
in order to validate the label on the disk was what is expected for
disk pool startup. However, commit id 'a4cb4a74f' really messed things
up by missing an else condition causing PARTEDFindLabel to always
return DIFFERENT.
Signed-off-by: John Ferlan <jferlan@redhat.com>
So far only QEMU_MONITOR_MIGRATION_CAPS_POSTCOPY was reset, but only in
a single code path leaving post-copy enabled in quite a few cases.
https://bugzilla.redhat.com/show_bug.cgi?id=1425003
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
It's only called from qemuMigrationReset now so it doesn't need to be
exported and {tls,sec}Alias are always NULL.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This new API is supposed to reset all migration parameters to make sure
future migrations won't accidentally use them. This patch makes the
first step and moves qemuMigrationResetTLS call inside
qemuMigrationReset.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Migration parameters are either reset by the main migration code path or
from qemuProcessRecoverMigration* in case libvirtd is restarted during
migration.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Finished qemuMigrationRun does not mean the migration itself finished
(it might have just switched to post-copy mode). While resetting TLS
parameters is probably OK at this point even if migration is still
running, we want to consolidate the code which resets various migration
parameters. Thus qemuMigrationResetTLS will be called from the Confirm
phase (or at the end of the Perform phase in case of v2 protocol), when
migration is either canceled or finished.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
qemuProcessRecoverMigrationOut doesn't explicitly call
qemuMigrationResetTLS relying on two things:
- qemuMigrationCancel resets TLS parameters
- our migration code resets TLS before entering
QEMU_MIGRATION_PHASE_PERFORM3_DONE phase
But this is not obvious and the assumptions will be broken soon. Let's
explicitly reset TLS parameters on all paths which do not kill the
domain.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
There is no async job running when a freshly started libvirtd is trying
to recover from an interrupted incoming migration. While at it, let's
call qemuMigrationResetTLS every time we don't kill the domain. This is
not strictly necessary since TLS is not supported when v2 migration
protocol is used, but doing so makes more sense.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Because of the changes done in the previous commit, @host is already a
migratable CPU and there's no need to do any additional filtering.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We will need to store two more host CPU models and nested structs look
better than separate items with long complicated names.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This new internal API makes a copy of virCPUDef while removing all
features which would block migration. It uses cpu_map.xml as a database
of such features, which should only be used as a fallback when we cannot
get the data from a hypervisor. The main goal of this API is to decouple
this filtering from virCPUUpdate so that the hypervisor driver can
filter the features according to the hypervisor.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If formatting NUMA topology fails, the function returns immediatelly,
but the buffer structure allocated on the stack references lot of
heap-allocated memory and that would get lost in such case.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
qemuProcessVerifyHypervFeatures is supposed to check whether all
requested hyperv features were actually honored by QEMU/KVM. This is
done by checking the corresponding CPUID bits reported by the virtual
CPU. In other words, it doesn't work for string properties, such as
VIR_DOMAIN_HYPERV_VENDOR_ID (there is no CPUID bit we could check). We
could theoretically check all 96 bits corresponding to the vendor
string, but luckily we don't have to check the feature at all. If QEMU
is too old to support hyperv features, the domain won't even start.
Otherwise, it is always supported.
Without this patch, libvirt refuses to start a domain which contains
<features>
<hyperv>
<vendor_id state='on' value='...'/>
</hyperv>
</features>
reporting internal error: "unknown CPU feature __kvm_hv_vendor_id.
This regression was introduced by commit v3.1.0-186-ge9dbe7011, which
(by fixing the virCPUDataCheckFeature condition in
qemuProcessVerifyHypervFeatures) revealed an old bug in the feature
verification code. It's been there ever since the verification was
implemented by commit v1.3.3-rc1-5-g95bbe4bf5, which effectively did not
check VIR_DOMAIN_HYPERV_VENDOR_ID at all.
https://bugzilla.redhat.com/show_bug.cgi?id=1439424
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Introduce STRICT_FRAME_LIMIT_CFLAGS that will be used for
production code and RELAXED_FRAME_LIMIT_CFLAGS for tests.
Raising the limit for tests allows building them with clang
with optimizations disabled.
This header file has been created so that we can expose
internal functions to the test suite without making them
public: those in qemu_capabilities.h bearing the comment
/* Only for use by test suite */
are obvious candidates for being moved over.
This function runs an iscsi command and parses its output.
However, due to the nature of things, virISCSIExtractSession()
callback can be called multiple times. In each run it would
allocate new memory and overwrite the variable where we keep
pointer to it and thus leaking old allocations.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Even though the virMacMap object is not necessarily created at
the same time as the network object, the former makes no sense
without the latter and thus should be unref'd in the network
object dispose function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Imagine that this function is called twice over the same disk
source. While in the first run all allocated memory is freed, not
all pointers are set to NULL (e.g. def->srcpool). So when called
again, these poitners are freed again resulting in double free.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After restart of libvirtd the 'checkPool' method is supposed to validate
that the pool is online. Since libvirt then refreshes the pool contents
anyways just return whether the pool was supposed to be online so that
the code can be reached. This is necessary since if a pool does not
implement the method it's automatically considered as inactive.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1436065
qemu requires that the topology equals to the maximum vcpu count.
Document this along with the API to set maximum vcpu count and the XML
element.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1426220
Use the relative lookup specifier rather than the global one. Otherwise
only the first name would be looked up. Add a test case to cover the
scenario.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1436574
The native gluster pool source list data differs from the data used for
attaching gluster volumes as netfs pools. Currently the only difference
was the format. Since native pools don't use it and later there will be
more differences add a more deterministic way to switch between the
types instead.
Similar to commit b202c39 ignore the warning that breaks the build
with clang:
util/virnetlink.c:365:52: error: cast from 'char *' to 'struct nlmsghdr *'
increases required alignment from 1 to 4 [-Werror,-Wcast-align]
for (msg = resp; NLMSG_OK(msg, len); msg = NLMSG_NEXT(msg, len)) {
^~~~~~~~~~~~~~~~~~~~
/usr/include/linux/netlink.h:87:7: note: expanded from macro 'NLMSG_NEXT'
(struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buggy condition meant that vcpu0 would not be iterated in the checks.
Since it's not hotpluggable anyways we would not be able to break the
configuration of a live VM.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1437013
Like all devices, add the 'id' option for mdevs as well. Patch also
adjusts the test accordingly.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1438431
Signed-off-by: Erik Skultety <eskultet@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1371892
The 'capacity' value (e.g. guest logical size) for a LUKS volume is
smaller than the 'physical' value of the file in the file system, so
we need to account for that.
When peeking at the encryption information about the volume add a fetch
of the payload_offset which is described as the offset to the start of
the volume data (in 512 byte sectors) in QEMU's QCryptoBlockLUKSHeader.
Then adjust the ->capacity appropriately when we determine that the
volume target encryption has a payload_offset value.
Add check for more than one RTA_OIF, even though this is rather
unlikely.
Get rid of the buggy switch / break as this code won't need to
handle more attributes.
Use VIR_WARNINGS_NO_CAST_ALIGN to fix impossible to fix
util/virnetdevip.c:560:17: error: cast increases required alignment of target type [-Werror=cast-align]
Depending on the architecture, requirements for ACPI and UEFI can
be different; more specifically, while on x86 UEFI requires ACPI,
on aarch64 it's the other way around.
Enforce these requirements when validating the domain, and make
the error message more accurate by mentioning that they're not
necessarily applicable to all architectures.
Several aarch64 test cases had to be tweaked because they would
have failed the validation step otherwise.
The capabilities used in test cases should match those used
during normal operation for the tests to make any sense.
This results in the generated command line for a few test
cases (most notably non-x86 test cases that were wrongly
assuming they could use -no-acpi) changing.
Instead of having a single function that probes the
architecture from the monitor and then sets a bunch of
basic capabilities based on it, have a separate function
for each part: virQEMUCapsInitQMPArch() only sets the
architecture, and virQEMUCapsInitQMPBasicArch() only sets
the capabilities.
This split will be useful later on, when we will want to
set basic capabilities from the test suite without having
to go through the pain of mocking the monitor.
If a transient storage pool is deemed inactive after libvirtd restart it
would not be deleted from the list. Reuse virStoragePoolUpdateInactive
along with a refactor necessary to properly update the state.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1242801
After a pool is made inactive the definition objects need to be updated
(if a new definition is prepared) and transient pools need to be
completely removed. Split out the code doing these steps into a separate
function for later reuse.
When registering a storage poll backend, the code would use
virStorageTypeToString instead of virStoragePoolTypeToString. The
following message would be logged:
virDriverLoadModuleFunc:71 : Lookup function 'virStorageBackendSCSIRegister'
virStorageBackendRegister:174 : Registering storage backend '(null)'
Currently, if we want to zero out disk source (e,g, due to
startupPolicy when starting up a domain) we use
virDomainDiskSetSource(disk, NULL). This works well for file
based storage (storage type file, dir, or block). But it doesn't
work at all for other types like volume and network.
So imagine that you have a domain that has a CDROM configured
which source is a volume from an inactive pool. Because it is
startupPolicy='optional', the CDROM is empty when the domain
starts. However, the source element is not cleared out in the
status XML and thus when the daemon restarts and tries to
reconnect to the domain it refreshes the disks (which fails - the
storage pool is still not running) and thus the domain is killed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The virMacMap module is there for dumping [domain, <list of is
MACs>] pairs into a file so that libvirt_guest NSS module can use
it. Whenever a interface is allocated from network (e.g. on
domain<F2> startup or NIC hotplug), network is notified and so is
virMacMap module subsequently. The module update functions
networkMacMgrAdd() and networkMacMgrDel() gracefully handle the
case when there's no module. The problem is, the module is
created if and only if network is freshly started, or if the
daemon restarts and network previously had the module.
This is not very user friendly - if users want to use the NSS
module they need to destroy their network and bring it up again
(and subsequently all the domains using it).
One disadvantage of this approach implemented here is that one
may get just partial results: any already running network does
not record mac maps, thus only newly plugged domains will be
stored in the module. The network restart scenario is not touched
by this of course. But one can argue that older libvirts had
never recorded the mac maps anyway.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
So far our code is full of the following pattern:
dom = virGetDomain(conn, name, uuid)
if (dom)
dom->id = 42;
There is no reasong why it couldn't be just:
dom = virGetDomain(conn, name, uuid, id);
After all, client domain representation consists of tuple (name,
uuid, id).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There was an unhandled 'open' call which resulted in:
"error: Library function returned error but did not set virError"
Even if this happens during the daemon's start when we still don't have
any set of outputs defined yet, we can safely report an error, since we
automatically fallback to stderr which is fine even for both
running as a daemonized process, since this happens before the daemon
forks into the background, and running as a systemd service, since
systemd re-directs std outputs to journald by default.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1436060
Signed-off-by: Erik Skultety <eskultet@redhat.com>
In 9e2465834 a check that denies internal snapshots when pflash
based loader is configured for the domain. However, if there's
none and an user tries to do an internal snapshot they will
witness daemon crash as in that case vm->def->os.loader is NULL
and we dereference it unconditionally.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
CPU features which change their value from disabled to enabled between
two calls to query-cpu-model-expansion (the first with no extra
properties set and the second with 'migratable' property set to false)
can be marked as enabled and non-migratable in qemuMonitorCPUModelInfo.
Since the code consuming qemuMonitorCPUModelInfo currently ignores the
migratable flag, this change is effectively changing the CPU model
advertised in domain capabilities to contain all features (even those
which block migration). And this matches what we do for QEMU older than
2.9.0, when we detect all CPUID bits ourselves without asking QEMU.
As a result of this change
<cpu mode='host-model'>
<feature name='invtsc' policy='require'/>
</cpu>
will work with all QEMU versions. Such CPU definition would be forbidden
with QEMU >= 2.9.0 without this patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If calling query-cpu-model-expansion on the 'host'/'max' CPU model with
'migratable' property set to false succeeds, we know QEMU is able to
tell us which features would disable migration. Thus we can mark all
enabled features as migratable.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
QEMU is able to tell us whether a CPU feature would block migration or
not. This patch adds support for storing such features in
qemuMonitorCPUModelInfo.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When idx is 0 virStorageFileChainLookup returns the base (bottom) of the
backing chain rather than the top. This is expected by the callers of
qemuDomainGetStorageSourceByDevstr.
Add a special case for idx == 0
One of the problems with our virGetDomain function is that it
copies just domain name and domain UUID. Therefore it's very
easy to forget aboud domain ID. This can cause some bugs, like
virConnectGetAllDomainStats not reporting proper domain IDs.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1434882
Imagine the following scenario:
1) virsh net-start default
2) virsh start myFavouriteDomain
3) virsh net-destroy default
4) virsh destroy myFavouriteDomain
(assuming myFavouriteDomain has an interface from default
network)
Regardless of how unlikely this scenario looks like, we should
not crash. The problem is, on net-destroy in
networkShutdownNetworkVirtual() the virMacMap module is unrefed,
but the stale pointer is kept around. Thus when the domain
destroy procedure comes in, networkReleaseActualDevice() and
subsequently networkMacMgrDel() is called. This function sees the
stale pointer and starts calling the virMacMap module APIs which
work over freed memory.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
off_t is signed and it's size is the same as long only on 64b archs.
Thus it cannot be formatted as %lu.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The value we use internally to represent the lack of a memory
locking limit, VIR_DOMAIN_MEMORY_PARAM_UNLIMITED, doesn't
match the value setrlimit() and prlimit() use for the same
purpose, RLIM_INFINITY, so we have to handle the translation
ourselves.
Partially-resolves: https://bugzilla.redhat.com/1431793
For guests that use <memoryBacking><locked>, our only option
is to remove the memory locking limit altogether.
Partially-resolves: https://bugzilla.redhat.com/1431793
Instead of having a separate function, we can simply return
zero from the existing qemuDomainGetMemLockLimitBytes() to
signal the caller that the memory locking limit doesn't need
to be set for the guest.
Having a single function instead of two makes it less likely
that we will use the wrong value, which is exactly what
happened when we started applying the limit that was meant
for VFIO-using guests to <memoryBacking><locked>-using
guests.
This reverts commit c2e60ad0e5.
Turns out this check is excessively strict: there are ways
other than <memtune><hard_limit> to raise the memory locking
limit for QEMU processes, one prominent example being
tweaking /etc/security/limits.conf.
Partially-resolves: https://bugzilla.redhat.com/1431793
If if_indextoname is not defined, the whole function using it should
not be defined either. Add stub to fix build on mingw.
Caused by 5dd607059d
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Creating a copy of the definition we want to add in a migration cookie
makes the code cleaner and less prone to memory leaks or double free
errors.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1398087
Clean up the virsh man page description for --pool-create-as in order
to better describe how the various arguments are used when creating
(or defining) a logical pool.
Also modify the storage pool XML parsing algorithm to check for the
mismatched "name" and "source-name".
While parsing if the storage source is not present, then a defaultFormat
was not set. This could lead to oddities such as seeing "unknown" format
in output for the "logical" pool even though the only format the pool could
support would be "lvm2".
This does "put a label" on other pool defaults as follows:
File System: FS_AUTO
Network File System: NETFS_AUTO
Disk: UNKNOWN
Each of which is the "0" value for their respective pools and thus
would be no "real" change.
QEMU allows for TSC frequency to be explicitly set to enable migration
with invtsc (migration fails if the destination QEMU cannot set the
exact same frequency used when starting the domain on the source host).
Libvirt already supports setting the TSC frequency in the XML using
<clock>
<timer name='tsc' frequency='1234567890'/>
</clock>
which will be transformed into
-cpu Model,tsc-frequency=1234567890
QEMU command line.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The frequency is documented and formatted as an attribute of the <timer>
element rather than a nested <frequency> element expected by the parser.
Luckily enough, timer frequency has not been used by any driver so far.
And users were not able to set it in the XML either.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
- Make virMediatedDeviceNew() stub args match its prototype
- Fix typo: virRerportError -> virReportError
- Move MDEV_SYSFS_DEVICES definition out of the #ifdef __linux__ block
so we don't have to stub virMediatedDeviceGetSysfsPath()
https://bugzilla.redhat.com/show_bug.cgi?id=1430679
As it turns out some file headers (e.g. ext4) may be larger/longer than
the 512 bytes of zeros being written prior to a pvcreate, so let's write
out 2048 bytes similar to how the pvcreate sources would peek at the first
4 sectors of the device.
Make sure there is at enough bytes on the device to clear before doing
doing the clear - just to be sure.
This adds a few validations to the devices listed for a hostdev network:
* devices must be listed by PCI address, not by netdev name
* listing a device by PCI address is valid only for hostdev networks, not
for other types of network (e.g. macvtap passthrough).
* each device in a hostdev pool must be an SR-IOV VF
Resolves: https://bugzilla.redhat.com/1004676
Previously, this function must've been called only on Linux in order
to fail gracefully. That lead to #ifdef mess in callers, so the
function was redesigned so it failed gracefully on non-existing
files. However that commit forgot to define the function outside the
__linux__ ifdef, it broke non-Linux builds.
Caused by c67e04e25f.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The public API flags are handled by the cpuBaselineXML wrapper. The
internal cpuBaseline API only needs to know whether it is supposed to
drop non-migratable features.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
cpuBaseline is responsible for computing a baseline CPU while feature
expansion is done by virCPUExpandFeatures. The cpuBaselineXML wrapper
(used by hypervisor drivers to implement virConnectBaselineCPU API)
calls cpuBaseline followed by virCPUExpandFeatures if requested by
VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES flag.
The features in the three changed test files had to be sorted using
"sort -k 3" because virCPUExpandFeatures returns a sorted list of
features.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Having to use cpuBaseline with VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES
flag to expand CPU features is strange. Not to mention that cpuBaseline
can only expand host CPU definitions (i.e., it completely ignores
feature policies). The new virCPUExpandFeatures API is designed to work
with both host and guest CPU definitions.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This is the maximum for many reasons, for starters because index ==
bus number, and a controller's bus number is 8 bits.
This incidentally resolves: https://bugzilla.redhat.com/1329090
Having this information available will make it easier to determine the
culprit when MAC or vlan tag appear to not be set, eg.:
https://bugzilla.redhat.com/1364073
(This patch doesn't fix that bug, just makes it easier to diagnose)
If an SRIOV VF has previously been used for VFIO device assignment,
the "admin MAC" that is stored in the PF driver's table of VF info
will have been set to the MAC address that the virtual machine wanted
the device to have. Setting the admin MAC for a VF also sets a flag in
the PF that is loosely called the "administratively set" flag. Once
that flag is set, it is no longer possible for the net driver of the
VF (either on the host or in a virtual machine) to directly set the
VF's MAC again; this flag isn't reset until the *PF* driver is
restarted, and that requires taking *all* VFs offline, so it's not
really feasible to do.
If the same SRIOV VF is later used for macvtap passthrough mode, the
VF's MAC address must be set, but normally we don't unbind the VF from
its host net driver (since we actually need the host net driver in
this case). Since setting the VF MAC directly will fail, in the past
"we" ("I") had tried to fix the problem by simply setting the admin MAC
(via the PF) instead. This *appeared* to work (and might have at one
time, due to promiscuous mode being turned on somewhere or something),
but it currently creates a non-working interface because only the
value for admin MAC is set to the desired value, *not* the actual MAC
that the VF is using.
Earlier patches in this series reverted that behavior, so that we once
again set the MAC of the VF itself for macvtap passthrough operation,
not the admin MAC. But that brings back the original bug - if the
interface has been used for VFIO device assignment, you can no longer
use it for macvtap passthrough.
This patch solves that problem by noticing when virNetDevSetMAC()
fails for a VF, and in that case it sets the desired MAC to the admin
MAC via the PF, then "bounces" the VF driver (by unbinding and the
immediately rebinding it to the VF). This causes the VF's MAC to be
reinitialized from the admin MAC, and everybody is happy (until the
*next* time someone wants to set the VF's MAC address, since the
"administratively set" bit is still turned on).
Some PF drivers allow setting the admin MAC (that is the MAC address
that the VF will be initialized to the next time the VF's driver is
loaded) to 00:00:00:00:00:00, and some don't. Multiple drivers
initialize the admin MACs to all 0, but don't allow setting it to that
very same value. It has been an uphill battle convincing the driver
people that it's reasonable to expect The argument that's used is
that an all 0 device MAC address on a device is invalid; however, from
an outsider's point of view, when the admin MAC is set to 0 at the
time the VF driver is loaded, the VF's MAC is *not* set to 0, but to a
random non-0 value. But that's beside the point - even if I could
convince one or two SRIOV driver maintainers to permit setting the
admin MAC to 0, there are still several other drivers.
So rather than fighting that losing battle, this patch checks for a
failure to set the admin MAC due to an all 0 value, and retries it
with 02:00:00:00:00:00. That won't result in a random value being set
in the VF MAC at next VF driver init, but that's okay, because we
always want to set a specific value anyway. Rather, the "almost 0"
setting makes it easy to visually detect from the output of "ip link
show" which VFs are currently in use and which are free.
The global functions virNetDevReplaceMacAddress(),
virNetDevReplaceNetConfig(), virNetDevRestoreMacAddress(), and
virNetDevRestoreNetConfig() are no longer used, as their functionality
has been replaced by virNetDev(Save|Read|Set)NetConfig().
The static functions virNetDevReplaceVfConfig() and
virNetDevRestoreVfConfig() were only used by the above-named global
functions that were removed.
It takes longer to explain this than to fix it...
In the past we weren't able to save the VF's own MAC address *at all*
when using it for hostdev assignment, because we had already unbound
the VF from the host net driver prior to saving its config. With the
previous patch, that problem has been solved, so we now have the VF's
MAC address saved and can move on to the *next* problem, which is twofold:
1) during teardown we restore the config before we've re-bound, so the
VF doesn't have a net driver, and thus we can't set its MAC address
directly.
2) even if we delay restoring the config until the VF is bound to a
net driver, the request to set its MAC address would fail, since
(during device setup) we had set the "admin MAC" for the VF via an
RTM_SETLINK to the PF - once you've set the admin MAC for a VF, the
VF driver (either on host or on guest) is not allowed to change the
VF's MAC address "forever" (well, until you reload the PF driver,
but that requires destroying and recreating every single VF, which
isn't something you can require).
The solution is to keep the restoration of config at the same place,
but to set the *admin MAC* to the address you want the VF to have -
when the VF net driver is later initialized (as a part of re-binding
to the VF net driver) its MAC will be initialized to the current value
of the admin MAC.
In order to properly restore the original state of an SRIOV VF when
we're finished with it, we need to save the MAC address of the VF
itself (not just the admin MAC address for the VF that is stored in
the PF). But that can only be done when the VF is still bound to the
host's netdev driver, and we have always done the saving of device
config after the VF is already bound to vfio-pci. This patch prepares
us for adding a save of the VF's MAC by calling the function that
saves netconfig earlier in the device preparation, before we've
unbound it from the host netdev driver.
These two operations will need to be separated so that saving of the
original config is done before detaching the host net driver, and
setting the new config is done after attaching vfio-pci. This patch
splits the single function into two, but for now calls them together
(to make bisecting easier if there is a regression).
virHostdevNetConfigReplace() and virHostdevNetConfigRestore() are
modified to use the new virNetDev*NetConfig() functions.
Note that due to the VF's original MAC addresses being saved after it
has already been un-bound from the host net driver, the actual current
VF MAC address won't be saved (because it no longer exists) - only the
"admin MAC" will be saved. This reflects existing behavior that will
be fixed in an upcoming patch.
This patch modifies the macvtap passthrough setup to use
virNetDevSaveNetConfig()+virNetDevSetConfig() instead of
virNetDevReplaceNetConfig() or virNetDevReplaceMacAddress(), and the
teardown to use virNetDevReadNetConfig()+virNetDevSetConfig() instead
of virNetDevRestoreNetConfig() or virNetDevRestoreMacAddress().
Since the older functions only saved/restored the admin MAC and vlan
tag (which is incorrect) and the new functions save/restore the VF's
own MAC address and vlan tag (correct), this actually fixes a bug
(which was introduced by commit cb3fe38c7, which was itself supposed
to be a fix for https://bugzilla.redhat.com/1113474 ).
The downside to this patch is that it causes an *apparent* regression
in that bug (because there will once again be an error reported if the
interface had previously been used for VFIO device assignment), but in
reality, the code hasn't been working for *any* case before this
current patch (at least not with any recent kernel). Anyway, that
"regression" will be fixed with an upcoming patch that fixes it the
*right* way.
These three functions are destined to replace
virNetDev(Replace|Restore)NetConfig() and
virNetDev(Replace|Restore)MacAddress(), which both do the save and set
together as a single step. We need to separate the save, read, and set
steps because there will be situations where we need to do something
else in between (in particular, we will need to rebind a VF's driver
after save but before set).
This patch creates the new functions, but doesn't call them - that
will come in a subsequent patch. Note that the new functions to
read/write the file that stores the original network config now uses
JSON rather than plaintext (it still recognizes the old format as well
though, so it won't get confused during an upgrade).
The hyperv panic notifier reports additional data in form of 5 registers
that are reported in the crash event from qemu. Log them into the VM log
file and report them as a warning so that admins can see the cause of
crash of their windows VMs.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1426176
For certain kinds of panic notifiers (notably hyper-v) qemu is able to
report some data regarding the crash passed from the guest.
Make the data accessible to the callback in qemu so that it can be
processed further.
Format the mediated devices on the qemu command line as
-device vfio-pci,sysfsdev='/path/to/device/in/syfs'.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since mdevs are just another type of VFIO devices, we should increase
the memory locking limit the same way we do for VFIO PCI devices.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
As goes for all the other hostdev device types, grant the qemu process
access to /dev/vfio/<mediated_device_iommu_group>.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Keep track of the assigned mediated devices the same way we do it for
the rest of hostdevs. Methods like 'Prepare', 'Update', and 'ReAttach'
are introduced by this patch.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
So far, the official support is for x86_64 arch guests so unless a
different device API than vfio-pci is available let's only turn on
support for PCI address assignment. Once a different device API is
introduced, we can enable another address type easily.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This merely introduces virDomainHostdevMatchSubsysMediatedDev method that
is supposed to check whether device being cold-plugged does not already
exist in the domain configuration.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch updates all of our security driver to start labeling the
VFIO IOMMU devices under /dev/vfio/ as well.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
A mediated device will be identified by a UUID (with 'model' now being
a mandatory <hostdev> attribute to represent the mediated device API) of
the user pre-created mediated device. We also need to make sure that if
user explicitly provides a guest address for a mdev device, the address
type will be matching the device API supported on that specific mediated
device and error out with an incorrect XML message.
The resulting device XML:
<devices>
<hostdev mode='subsystem' type='mdev' model='vfio-pci'>
<source>
<address uuid='c2177883-f1bb-47f0-914d-32a22e3a8804'>
</source>
</hostdev>
</devices>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Beside creation, disposal, getter, and setter methods the module exports
methods to work with lists of mediated devices.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Just to make the code a bit cleaner, move hostdev specific post parse
code to its own function just in case it grows in the future.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Just a tiny wrapper over the SCSI def clearing logic to drop some
if-else branches from a switch, mainly because extending the switch in
the future would render the current code with branching less readable.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Enforce virDomainHostdevSubsysType checking during compilation. Again,
one of a few spots in our code where we should enforce the typecast to
the enum type, thus not forgetting to update *all* switch occurrences
dealing with the give enum.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
We keep forgetting that older setups don't like 'index':
CC util/libvirt_util_la-virsysinfo.lo
cc1: warnings being treated as errors
util/virstoragefile.c: In function 'virStorageSourceFindByNodeName':
util/virstoragefile.c:3804: error: declaration of 'index' shadows a global declaration [-Wshadow]
/usr/include/string.h:489: error: shadowed declaration is here [-Wshadow]
Signed-off-by: Eric Blake <eblake@redhat.com>
This way more drivers can utilize the functionality without copying
the code. And we can therefore test it in one place for all of them.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
That file has only two exported files and each one of them has
different naming. virNode is what all the other files use, so let's
use it. It wasn't used before because the clash with public API
naming, so let's fix that by shortening the name (there is no other
private variant of it anyway).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
There is no "node driver" as there was before, drivers have to do
their own ACL checking anyway, so they all specify their functions and
nodeinfo is basically just extending conf/capablities. Hence moving
the code to src/conf/ is the right way to go.
Also that way we can de-duplicate some code that is in virsysfs and/or
virhostcpu that got duplicated during the virhostcpu.c split. And
Some cleanup is done throughout the changes, like adding the vir*
prefix etc.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
There is no reason for it not to be in the utils, all global symbols
under that file already have prefix vir* and there is no reason for it
to be part of DRIVER_SOURCES because that is just a leftover from
older days (pre-driver modules era, I believe).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
While on that, drop support for kernels from RHEL-5 era (missing
cpu/present file). Also add some useful functions and export them.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
By using this we are able to easily switch the sysfs path being
used (fake it). This will not only help tests in the future but can
be also used from files where the code is duplicated currently.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
These helpers are doing just a read and covert the value, but they
properly size the read limit, handle additional whitespace characters,
and unify error reporting.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Commits eaf18f4c2b and 86dd9fac0f separated util/host{cpu,mem}
stuff from nodeinfo, but did not adjust the syms file.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
It is everywhere else. I even remember one of our scripts failing if
the newline is missing, but it doesn't happen currently.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Don't leak guest if adding it to virCapabilities fails. Also return
NULL and not pointer to free'd object with zero references in such
case.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Guests are handled in callers, but if something goes wrong (when it
cannot be added to virCapabilities, for example), there's no way for
them to free it properly.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Both QEMU and bhyve are using the same function for setting up the CPU
in virCapabilities, so de-duplicate it, save code and time, and help
other drivers adopt it.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
STREQ_NULLABLE returns true if both parameters are NULL. And that's
not what we want here. We just want to skop comparing source nodes
that don't have that info set. The function wouldn't make much sense
with nodeName == NULL, so we don't need to check that. Moreover, the
function's declaration uses ATTRIBUDE_NONNULL for nodeName, which not
only means that function expects the parameter not to be NULL, but
actually tells the compiler that it can optimize out the NULL checks.
That way it could end up calling strcmp on NULL (either nodeformat or
nodebacking). GCC figures this out if libvirt is compiled with
lv_cv_static_analysis=yes, unfortunately not everyone uses that.
Caused by cbc6d53513.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Management tools may want to check whether the threshold is still set if
they missed an event. Add the data to the bulk stats API where they can
also query the current backing size at the same time.
To allow updating stats based on the node name, add a helper function
that will fetch the required data from 'query-named-block-nodes' and
return it in hash table for easy lookup.
Detect the node names when setting block threshold and when reconnecting
or when they are cleared when a block job finishes. This operation will
become a no-op once we fully support node names.
To allow matching the node names gathered via 'query-named-block-nodes'
we need to query and then use the top level nodes from 'query-block'.
Add the data to the structure returned by qemuMonitorGetBlockInfo.
qemu for some time already sets node names automatically for the block
nodes. This patch adds code that attempts a best-effort detection of the
node names for the backing chain from the output of
'query-named-block-nodes'. The only drawback is that the data provided
by qemu needs to be matched by the filename as seen by qemu and thus
if two disks share a single backing store file the detection won't work.
This will allow us to use qemu commands such as
'block-set-write-threshold' which only accepts node names.
In this patch only the detection code is added, it will be used later.
Add monitor tooling for calling query-named-block-nodes. The monitor
returns the data as the raw JSON array that is returned from the
monitor.
Unfortunately the logic to extract the node names for a complete backing
chain will be so complex that I won't be able to extract any meaningful
subset of the data in the monitor code.
The code is currently simple, but if we later add node names, it will be
necessary to generate the names based on the node name. Add a helper so
that there's a central point to fix once we add self-generated node
names.
The event is fired when a given block backend node (identified by the
node name) experiences a write beyond the bound set via
block-set-write-threshold QMP command. This wires up the monitor code to
extract the data and allow us receiving the events and the capability.
When using thin provisioning, management tools need to resize the disk
in certain cases. To avoid having them to poll disk usage introduce an
event which will be fired when a given offset of the storage is written
by the hypervisor. Together with the API which will be added later, it
will allow registering thresholds for given storage backing volumes and
this event will then notify management if the threshold is exceeded.
The function has very specific semantics. Split out the part that parses
the backing store specification string into a separate helper so that it
can be reused later while keeping the wrapper with existing semantics.
Note that virStorageFileParseChainIndex is pretty well covered by the
test suite.
Along with video and VNC support, bhyve has introduced USB tablet
support as an input device. This tablet is exposed to a guest
as a device on an XHCI controller.
At present, tablet is the only supported device on the XHCI controller
in bhyve, so to make things simple, it's allowed to only have a
single XHCI controller with a single tablet device.
In detail, this commit:
- Introduces a new capability bit for XHCI support in bhyve
- Adds an XHCI controller and tabled support with 1:1 mapping
between them
- Adds a couple of unit tests
There are a number of functions in bhyve_capabilities.c that probe
hypervisor capabilities by executing the bhyve(1) binary with the
specific device arugment, checking error message (if any) and setting
proper capability bit. As those are extremely similar, move this logic
into a helper function and convert existing functions to use that.
* Extract filling bhyve capabilities from virBhyveDomainCapsBuild()
into a new function virBhyveDomainCapsFill() to make testing
easier by not having to mock firmware directory listing and
hypervisor capabilities probing
* Also, just presence of the firmware files is not sufficient
to enable os.loader.supported, hypervisor should support UEFI
boot too
* Add tests to domaincapstest for the main caps possible flows:
- when UEFI bootrom is supported
- when video (fbus) is supported
- neither of above is supported
qemuMigrationResetTLS() does not initialize 'ret' by default,
so when it jumps to 'cleanup' on error, the 'ret' variable will be
uninitialized, which clang complains about.
Set it to '-1' by default.
https://bugzilla.redhat.com/show_bug.cgi?id=1300769
If the migration flags indicate this migration will be using TLS,
then while we have connection in the Begin phase check and setup the
TLS environment that will be used by virMigrationRun during the Perform
phase for the source to configure TLS.
Processing adds an "-object tls-creds-x509,endpoint=client,..." and
possibly an "-object secret,..." to handle the passphrase response.
Then it sets the 'tls-creds' and possibly 'tls-hostname' migration
parameters.
The qemuMigrateCancel will clean up and reset the environment as it
was originally found.
Signed-off-by: John Ferlan <jferlan@redhat.com>
If the migration flags indicate this migration will be using TLS,
then set up the destination during the prepare phase once the target
domain has been started to add the TLS objects to perform the migration.
This will create at least an "-object tls-creds-x509,endpoint=server,..."
for TLS credentials and potentially an "-object secret,..." to handle the
passphrase response to access the TLS credentials. The alias/id used for
the TLS objects will contain "libvirt_migrate".
Once the objects are created, the code will set the "tls-creds" and
"tls-hostname" migration parameters to signify usage of TLS.
During the Finish phase we'll be sure to attempt to clear the
migration parameters and delete those objects (whether or not they
were created). We'll also perform the same reset during recovery
if we've reached FINISH3.
If the migration isn't using TLS, then be sure to check if the
migration parameters exist and clear them if so.
Add an asyncJob argument for add/delete TLS Objects. A future patch will
add/delete TLS objects from a migration which may have a job to join.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add the fields to support setting tls-creds and tls-hostname during
a migration (either source or target). Modify the query migration
function to check for the presence and set the field for future
consumers to determine which of 3 conditions is being met (NULL,
present and set to "", or present and sent to something). These
correspond to qemu commit id '4af245dc3' which added support to
default the value to "" and allow setting (or resetting) to ""
in order to disable. This reset option allows libvirt to properly
use the tls-creds and tls-hostname parameters.
Modify code paths that either allocate or use stack space in order
to call qemuMigrationParamsClear or qemuMigrationParamsFree for cleanup.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add a new TLS X.509 certificate type - "migrate". This will handle the
creation of a TLS certificate capability (and possibly repository) to
be used for migrations. Similar to chardev's, credentials will be handled
via a libvirt secrets; however, unlike chardev's enablement and usage
will be via a CLI flag instead of a conf flag and a domain XML attribute.
The migrations using the *x509_verify flag require the client-cert.pem
and client-key.pem files to be present in the TLS directory - so let's
also be sure to note that in the qemu.conf file.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Fix typo in virNetDevPFGetVF() stub:
ATTRUBUTE_UNUSED -> ATTRIBUTE_UNUSED.
While here, use common indent style for arguments in
virNetDevGetVirtualFunctionIndex() stub.
If the variable store (<nvram>) file is raw qemu can't do a snapshot of
it and thus the snapshot fails. QEMU rejects such snapshot by a message
which would not be properly interpreted as an error by libvirt.
Additionally allowing to use a qcow2 variable store backing file would
solve this issue but then it would become eligible to become target of
the memory dump.
Offline internal snapshot would be incomplete too with either storage
format since libvirt does not handle the pflash file in this case.
Forbid such snapshot so that we can avoid problems.
commit 00d28a78 added a check to see if there were any IPv6 routes
added by RA (Router Advertisement) via an interface that had accept_ra
set to something other than "2". The check was being done
unconditionally, but it's only relevant if IPv6 forwarding is going to
be turned on, and that will only happen if the network has an IPv6
address.
Given an SRIOV PF netdev name (e.g. "enp2s0f0") and VF#, this new
function returns the netdev name of the referenced VF device
(e.g. "enp2s11f6"), or NULL if the device isn't bound to a net driver.
We will want to allow silent failure of virNetDevSetMAC() in the case
that the SIOSIFHWADDR ioctl fails with errno == EADDRNOTAVAIL. (Yes,
that is very specific, but we really *do* want a logged failure in all
other circumstances, and don't want to duplicate code in the caller
for the other possibilities).
This patch renames the 3 different virNetDevSetMAC() functions to
virNetDevSetMACInternal(), adding a 3rd arg called "quiet" and making
them static (because this extra control will only be needed within
virnetdev.c). A new global virNetDevSetMAC() is defined that calls
whichever of the three *Internal() functions gets compiled with quiet
= false. Callers in virnetdev.c that want to notice a failure with
errno == EADDRNOTAVAIL and retry with a different strategy rather than
immediately failing, can call virNetDevSetMACInternal(..., true).
This function unbinds a device from its driver, then immediately
rebinds it to its driver again. The code for this new function is just
the 2nd half of virPCIDeviceBindWithDriverOverride(), so that
function's 2nd half is replaced with a call to virPCIDeviceRebind().
...and cleanup the callers to report it when it *is* an error.
In many cases It's useful for virPCIGetNetName() to not log an error
and simply return a NULL pointer when the given device isn't bound to
a net driver (e.g. we're looking at a VF that is permanently bound to
vfio-pci). The existing code would silently return an error in this
case, which could eventually lead to the dreaded "An error occurred
but the cause is unknown" log message.
This patch changes virPCIGetNetName() to still return success if the
device simply isn't bound to a net driver, and adjusts all the callers
that require a non-null netname to check for that condition and log an
error when it happens.
vf in virNetDevMacVLanDeleteWithVPortProfile() is initialized to -1
and never set. It's not set for a good reason - because it doesn't
make sense during macvtap device setup to refer to a VF device as
"PF:VF#". This patch replaces the two uses of "vf" with "-1", and
removes the local variable, so that it's more clear we are always
calling the utility functions with vf set to -1.
This function is only called in two places, and the ifindex,
nltarget_kernel, and getPidFunc args are never used (and never will
be).
ifindex - we always know the name of the device, and never know the
ifindex - if we really did need the ifindex we would have to get it
from the name using virNetDevGetIndex(). In practice, we just send -1
to virNetDevSetVfConfig(), which doesn't bother to learn the real
ifindex (you only need a name *or* an ifindex for the netlink command
to succeed, not both).
nltarget_kernel - messages to set the config of an SRIOV VF will
always go to netlink in the kernel, not to another user process, so
this arg is always true (there are other uses of netlink messages
where the message might need to go to another user process, but never
in the case of RTM_SETLINK for SRIOV).
getPidFunc - this arg is only used if nltarget_kernel is false, and it
never is.
None of this has any functional effect, it just makes it easier to
follow what's happening when virNetDevSetVfConfig() is called.
virNetDevParseVfConfig() assumed that both the MAC address and VLAN
tag pointers were valid, so even if you only wanted one or the other,
you would need a variable to hold the returned value for both. This
patch checks each for a NULL pointer before filling it in.
The source code will check for NULL arguments for 'macvtap_macaddr' and
'vmuuid', so no need for the NONNULL in the prototypes. Following the stack
for both arguments to virNetDevVPortProfileOpSetLink also shows called
functions would handle a NULL value.
Additionally, modified the prototype to use the same 'macvtap_macaddr'
name as the source code for consistency.
Since the code checks 'mgr == NULL' anyway, no need for the prototype
to have the NONNULL arg check. Also add an error message to indicate what
the failure is so that there isn't a failed for some reason error.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The comparison code used STREQ_NULLABLE anyway for both 'drv_name' and
'dom_name', so no need. Add a NULLSTR on the 'dom_name' too.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The comparison code used STREQ_NULLABLE anyway for both 'drv_name' and
'dom_name', so no need. Add a NULLSTR on the 'dom_name' too.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The code checks and handles a NULL 'str', so just remove the NONNULL.
Update the error message to add the NULLSTR() around 'str' also.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The 'mon' argument validity is checked in the QEMU_CHECK_MONITOR for the
following functions, so they don't need the NONNULL on their prototype:
qemuMonitorUpdateVideoMemorySize
qemuMonitorUpdateVideoVram64Size
qemuMonitorGetAllBlockStatsInfo
qemuMonitorBlockStatsUpdateCapacity
Signed-off-by: John Ferlan <jferlan@redhat.com>
The prototype requires not passing a NULL in the parameter and the callers
all would fail far before this code would fail if 'vm' was NULL, so just
remove the check.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The prototype requires a NONNULL argument and the only caller passes in
a non-null parameter. Besides the "else if" condition would deref it anyway.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Since the code checks and handles NULL parameters, remove the NONNULL
from the prototype.
Also fix the comment in the source to reference the right name.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Since the code checks and handles a NULL 'node' before proceeding
there's no need for the prototype with the NONNULL(2).
Signed-off-by: John Ferlan <jferlan@redhat.com>
If a network is destroyed and restarted, or its bridge is changed, any
tap devices that had previously been connected to the bridge will no
longer be connected. As a first step in automating a reconnection of
all tap devices when this happens, this patch modifies
networkNotifyActualDevice() (which is called once for every
<interface> of every active domain whenever libvirtd is restarted) to
reconnect any tap devices that it finds disconnected.
With this patch in place, you will need to restart libvirtd to
reconnect all the taps to their proper bridges. A future patch will
add a callback that hypervisor drivers can register with the network
driver to that the network driver can trigger this behavior
automatically whenever a network is started.
This patch splits out the part of virNetDevTapCreateInBridgePort()
that would need to be re-done if an existing tap device had to be
re-attached to a bridge, and puts it into a separate function. This
can be used both when an existing domain interface config is updated
to change its connection, and also to re-attach to the "same" bridge
when a network has been stopped and restarted. So far it is used for
nothing.
This function provides the bridge/bond device that the given network
device is attached to. The return value is 0 or -1, and the master
device is a char** argument to the function - this is needed in order
to allow for a "success" return from a device that has no master.
The only reason that the ethtool features weren't being retrieved in
an unprivileged libvirtd was because they required ioctl(), and the
ioctl was using an AF_PACKET socket, which requires root. Now that we
are using AF_UNIX for ioctl(), this restriction can be removed.
The exact family of the socket created for the fd used by ioctl(7)
doesn't matter, it just needs to be a socket and not a file. But for
some reason when macvtap support was added, it used
AF_PACKET/SOCK_DGRAM sockets for its ioctls; we later used the same
AF_PACKET/SOCK_DGRAM socket for new ioctls we added, and eventually
modified the other pre-existing ioctl sockets (for creating/deleting
bridges) to also use AF_PACKET/SOCK_DGRAM (that code originally used
AF_UNIX/SOCK_STREAM).
The problem with using AF_PACKET (intended for sending/receiving "raw"
packets, i.e. packets that can be some protocol other than TCP or UDP)
is that it requires root privileges. This meant that none of the
ioctls in virnetdev.c or virnetdevip.c would work when running
libvirtd unprivileged.
This packet solves that problem by changing the family to AF_UNIX when
creating the socket used for any ioctl().
For some drivers the domain's machine type makes no sense. They
just don't use it. A great example is bhyve driver. Therefore it
makes very less sense to report machine in domain capabilities
XML.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When enabling IPv6 on all interfaces, we may get the host Router
Advertisement routes discarded. To avoid this, the user needs to set
accept_ra to 2 for the interfaces with such routes.
See https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt
on this topic.
To avoid user mistakenly losing routes on their hosts, check
accept_ra values before enabling IPv6 forwarding. If a RA route is
detected, but neither the corresponding device nor global accept_ra
is set to 2, the network will fail to start.
