The typical case where we had a problem is with such a filesystem
definition as created by virt-sandbox-service:
<filesystem type='bind' accessmode='passthrough'>
<source dir='/var/lib/libvirt/filesystems/mysshd/var'/>
<target dir='/var'/>
</filesystem>
In this case, we don't want to unmount the /var subtree or we may
loose the access to the source folder.
Resolving symlinks can fail before mounting any file system if one file
system depends on another being mounted. Symlinks are now resolved in
two passes:
* Before any file system is mounted, but then we are more gentle if
the source path can't be accessed
* Right before mounting a file system, so that we are sure that we
have the resolved path... but then if it can't be accessed we raise
an error.
Due to a change (or bug?) in ip link implementation, the command
'ip link add vnet0...'
is forced into
'ip link add name vnet0...'
The changed command also works on older versions of iproute2, just the
'name' parameter has been made mandatory.
Add attribute to set vgamem_mb parameter of QXL device for QEMU. This
value sets the size of VGA framebuffer for QXL device. Default value in
QEMU is 8MB so reuse it also in libvirt to not break things.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1076098
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
So far we didn't have any option to set video memory size for qemu video
devices. There was only the vram (ram for QXL) attribute but it was valid
only for the QXL video device.
To provide this feature to users QEMU has a dedicated device attribute
called 'vgamem_mb' to set the video memory size. We will use the 'vram'
attribute for setting video memory size for other QEMU video devices.
For the cirrus device we will ignore the vram value because it has
hardcoded video size in QEMU.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1076098
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
QEMU has two different type of QXL display device. The first "qxl-vga"
is for primary video device and second "qxl" is for secondary video
device.
There are also two different ways how to specify those devices on qemu
command line, the first one and obsolete is using "-vga" option and the
current new one is using "-device" option. The "-vga" could be used only
to setup primary video device, so the "-vga qxl" equal to
"-device qxl-vga". Unfortunately the "-vga qxl" doesn't support setting
additional parameters for the device and "-global" option must be used
for this purpose. It's mandatory to use "-global qxl-vga...." to set the
parameters of primary video device previously defined with "-vga qxl".
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1076098
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The vram attribute was introduced to set the video memory but it is
usable only for few hypervisors excluding QEMU/KVM and the old XEN
driver. Only in case of QEMU the vram was used for QXL.
This patch updates the documentation to reflect current code in libvirt
and also changes the cases when we will set the default vram attribute.
It also fixes existing strange default value for VGA devices 9MB to 16MB
because the video ram should be rounded to power of two.
The change of default value could affect migrations but I found out that
QEMU always round the video ram to power of two internally so it's safe
to change the default value to the next closest power of two and also
silently correct every domain XML definition. And it's also safe because
we don't pass the value to QEMU.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1076098
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
There are two special cases, if the input number is 0 or the number is
larger then 2^31 (for 32bit unsigned int). For the special cases the
return value is 0 because they cannot be rounded.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Get mounted filesystems list, which contains hardware info of disks and its
controllers, from QEMU guest agent 2.2+. Then, convert the hardware info
to corresponding device aliases for the disks.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
virDomainGetFSInfo returns a list of filesystems information mounted in the
guest, which contains mountpoints, device names, filesystem types, and
device aliases named by libvirt. This will be useful, for example, to
specify mountpoints to fsfreeze when taking snapshot of a part of disks.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
As qemu is now able to notify us about change of the channel state used
for communication with the guest agent we now can more precisely track
the state of the guest agent.
To allow notifying management apps this patch implements a new event
that will be triggered on changes of the guest agent state.
Improve the monitor function to also retrieve the guest state of
character device (if provided) so that we can refresh the state of
virtio-serial channels and perhaps react to changes in the state in
future patches.
This patch changes the returned data from qemuMonitorGetChardevInfo to
return a structure containing the pty path and the state for all the
character devices.
The change to the testsuite makes sure that the data is parsed
correctly.
This patch contains three domain cleanup improvements in the migration
finish phase, ensuring a domain is properly disposed when a failure is
detected or the migration is cancelled.
The check for virDomainObjIsActive is moved to libxlDomainMigrationFinish,
where cleanup can occur if migration failed and the domain is inactive.
The 'cleanup' label was missplaced in libxlDomainMigrationFinish, causing
a migrated domain to remain in the event of an error or cancelled migration.
In cleanup, the domain was not removed from the driver's list of domains.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
During the perform phase of migration, the domain is started on
the dst host in a running state if VIR_MIGRATE_PAUSED flag is not
specified. In the finish phase, the domain is also unpaused if
VIR_MIGRATE_PAUSED flag is unset. I've noticed this second unpause
fails if the domain was already unpaused following the perform phase.
This patch changes the perform phase to always start the domain
paused, and defers unpausing, if requested, to the finish phase.
Unpausing should occur in the finish phase anyhow, where the domain
can be properly destroyed if the perform phase fails and migration
is cancelled.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Moving data reception of the perform phase of migration to a
thread introduces a race with the finish phase, where checking
if the domain is active races with the thread finishing the
perform phase. The race is easily solved by acquiring a job in
the finish phase, which must wait for the perform phase job to
complete.
While wrapping the finish phase in a job, noticed the virDomainObj
was being unlocked in a callee - libxlDomainMigrationFinish. Move
the unlocking to libxlDomainMigrateFinish3Params, where the lock
is acquired.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The libxl driver receives migration data within an IO callback invoked
by the event loop, effectively disabling the event loop while migration
occurs.
This patch moves receving of the migration data to a thread. The
incoming connection is still accepted in the IO callback, but control
is immediately returned to the event loop after spawning the thread.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Specifying an explicit path to pygrub (e.g. BINDIR "/pygrub") only works if
Xen and libvirt happen to be installed to the same prefix. A more flexible
approach is to simply specify "pygrub" which will cause libxl to use the
correct path which it knows (since it is built with the same prefix as pygrub).
This is particular problematic in the Debian packaging, since the Debian Xen
package relocates pygrub into a libexec dir, however I think this change makes
sense upstream.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
To be able to express some use cases of the RBD backing with libvirt, we
need to be able to specify a config file for the RBD client to qemu as
that is one of the commonly used options.
Some storage systems have internal support for snapshots. Libvirt should
be able to select a correct snapshot when starting a VM.
This patch adds a XML element to select a storage source snapshot for
the RBD protocol which supports this feature.
As we now have a common function to parse backing store string for RBD
backing store we can reuse it in the backing store walker so that we
don't fail on files backed by RBD storage.
This patch also adds a few tests to verify that the parsing works as
expected.
To allow reuse this non-trivial parser code in the backing store parser
this part of the command line parser needs to be split out into a
separate funciton.
Instead of splitting out various fields, pass the complete structure and
let the function pick various things of it.
As one of the callers isn't using virStorageSourcePtr to store the data,
this patch adds glue code that fills the data into a dummy
virStorageSourcePtr before calling the func.
This change will help when adding new fields that need output processing
in the future.
If there are no hosts for a storage source virStorageSourceCopy and
virStorageSourceNewFromBackingRelative would try to copy them anyways.
As the success of virStorageNetHostDefCopy is determined by returning
a pointer and malloc of 0 elements might return NULL according to the
implementation, the result of the copy function may vary.
Fix this by copying the hosts array only if there are hosts defined.
As we now have a deep copy function for struct virStorageSource add a
notice that extensions of the structure require also appropriate changes
to the virStorageSourceCopy func.
New qemu added a new event that is emitted when a virtio serial channel
is opened in the guest OS. This allows us to update the state of the
port in the output-only XML element.
This patch implements the monitor callbacks and necessary handlers to
update the state in the definition.
To track state of virtio channels this patch adds a new output-only
attribute called 'state' to the <target> element of virtio channels.
This will be later populated with the guest state of the channel.
To unify future additions that require information from "query-chardev"
rename qemuMonitorGetPtyPaths and friends to qemuMonitorGetChardevInfo
and move the allocation of the returned hash into the top level
function.
When creating a disk image snapshot the libvirt code would blindly copy
the parents label to the newly created image. This runs into problems
when you start a VM from an image hosted on NFS (or other storage system
that doesn't support selinux labels) and the snapshot destination is on
a storage system that does support selinux labels. Libvirt's code in
that case generates a different security label for the image hosted on
NFS. This label is valid only for NFS images and doesn't allow access in
case of a locally stored image.
To fix this issue libvirt needs to refrain from copying security
information in cases where the default domain seclabel is a better
choice.
This patch repurposes the now unused @force argument of
virStorageSourceInitChainElement to denote whether a copy of the
security labelling stuff should be attempted or not. This allows to
fine-control the copy operation for cases where we need to keep the
label of the old disk vs. the cases where we need to keep the label
unset to use the default domain imagelabel.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1151718
Commit c0e7022 breaks on a machine that lacks dbus headers:
In file included from util/virdbus.c:24:0:
util/virdbuspriv.h:31:3: error: unknown type name 'dbus_int16_t'
* src/util/virdbuspriv.h (DBusBasicValue): Only provide fallback
when dbus is compiled.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1152382
When libvirt create's the vport (VPORT_CREATE) for the vHBA, there isn't
enough "time" between the creation and the running of the following
backend->refreshPool after a backend->startPool in order to find the LU's.
Population of LU's happens asynchronously when udevEventHandleCallback
discovers the "new" vHBA port. Creation of the infrastructure by udev
is an iterative process creating and discovering actual storage devices and
adjusting the environment.
Because of the time it takes to discover and set things up, the backend
refreshPool call done after the startPool call will generally fail to
find any devices. This leaves the newly started pool appear empty when
querying via 'vol-list' after startup. The "workaround" has always been
to run pool-refresh after startup (or any time thereafter) in order to
find the LU's. Depending on how quickly run after startup, this too may
not find any LUs in the pool. Eventually though given enough time and
retries it will find something if LU's exist for the vHBA.
This patch adds a thread to be executed after the VPORT_CREATE which will
attempt to find the LU's without requiring the external run of refresh-pool.
It does this by waiting for 5 seconds and searching for the LU's. If any
are found, then the thread completes; otherwise, it will retry once more
in another 5 seconds. If none are found in that second pass, the thread
gives up.
Things learned while investigating this... No need to try and fill the
pool too quickly or too many times. Over the course of creation, the udev
code may 'add', 'change', and 'delete' the same device. So if the refresh
code runs and finds something, it may display it only to have a subsequent
refresh appear to "lose" the device. The udev processing doesn't seem to
have a way to indicate that it's all done with the creation processing of a
newly found vHBA. Only the Lone Ranger has silver bullets to fix everything.
Fix a problem in the getBlockDevice and processLU where retval initialized
to zero causing some failures to erroneously continue through to the
virStorageBackendSCSINewLun with an attempt to find a path for "/dev/(null)".
This would fail approximately 10 seconds later with debug message:
virStorageBackendSCSINewLun:203 :
No stable path found for '/dev/(null)' in '/dev/disk/by-path'
The root cause of the issue is for many /sys/bus/scsi/devices/<lun path>
there is no "block*" device found for the vHBA's, where "<lun path>" are
the various paths created for the vHBA, such as "17:0:0:0", "17:0:1:0",
"17:0:2:0", "17:0:3:0", etc. If the block device isn't found, then the
directory should just be ignored rather than attempting to process it.
The bug was that in getBlockDevice the assumption was "block" would exist
and either getNewStyleBlockDevice or getOldStyleBlockDevice would fill in
@block_device. However, if 'block*' doesn't exist, then the code returned
NULL for block_device *and* a good (zero) retval value. This caused the
processLU code to attempt the virStorageBackendSCSINewLun which failed
"at some point in time" in the future.
After this change - on test system the refresh-pool didn't have a noticable
pause of about 20 seconds - it completed within a second since no longer
was there an attempt/need to find "/dev/(null)".
Additionally, the virStorageBackendSCSIFindLU's shouldn't be declaring
found unless the processLU actually returns success. This will be
important in the followup patch which relies on whether a LU was found.
Compilation on a RHEL 5 host failed, due to the older dbus headers
present on that machine, and triggered by commit 2aa167ca:
util/virdbus.c: In function 'virDBusMessageIterDecode':
util/virdbus.c:952: error: 'DBusBasicValue' undeclared (first use in this function)
* m4/virt-dbus.m4 (LIBVIRT_CHECK_DBUS): Check for DBusBasicValue.
* src/util/virdbuspriv.h (DBusBasicValue): Provide fallback.
Signed-off-by: Eric Blake <eblake@redhat.com>
getsockopt(sock->fd, SOL_SOCKET, SO_PEERCRED, ...) sets the pid to 0
when the process that opens the connection is in another container.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Commit dc33e6e4 caused older platforms like Fedora 20 to emit
scary log messages at startup:
2014-11-19 23:12:58.800+0000: 28906: error : virCommandWait:2532 : internal error: Child process (/usr/sbin/iptables -w -L -n) unexpected exit status 2: iptables v1.4.19.1: unknown option "-w"
Try `iptables -h' or 'iptables --help' for more information.
Since we are probing and expect to handle the case where -w is not
supported, we should not let virCommand log it as an error.
* src/util/virfirewall.c (virFirewallCheckUpdateLock): Handle
non-zero status ourselves.
Signed-off-by: Eric Blake <eblake@redhat.com>
Oops, I forgot to squash one more instance of the same check in the
previous commit (v1.2.10-144-g52691f9).
https://bugzilla.redhat.com/show_bug.cgi?id=1147331
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Any attempt to start a tunnelled migration with libvirtd that supports
RDMA migration (specifically commit v1.2.8-226-ged22a47) crashes
libvirtd on the destination host.
The crash is inevitable because qemuMigrationPrepareAny is always called
with NULL protocol in case of tunnelled migration.
https://bugzilla.redhat.com/show_bug.cgi?id=1147331
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
As discussed on the upstream list, it's better not to make this
kind of predictions in libvirt. It may happen that qemu learns
how to enable OVMF on other architectures too and we shouldn't
try to chase that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Currently, we are whitelisting architectures, that we know how to run
OVMF on. So far, only x86_64 was enabled. However, looking at qemu
code, the same commandline can be used to enable OVMF for armv7l and
aarch64.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I noticed this while working on qemuDomainGetBlockInfo. Assigning
a bool value to an int variable compiles fine, but raises red flags
on the maintenance front as it becomes too easy to assign -1 or 2
or any other non-bool value to the same variable.
* cfg.mk (sc_prohibit_int_assign_bool): New rule.
* src/conf/snapshot_conf.c (virDomainSnapshotRedefinePrep): Fix
offenders.
* src/qemu/qemu_driver.c (qemuDomainGetBlockInfo)
(qemuDomainSnapshotCreateXML): Likewise.
* src/test/test_driver.c (testDomainSnapshotAlignDisks):
Likewise.
* src/util/vircgroup.c (virCgroupSupportsCpuBW): Likewise.
* src/util/virpci.c (virPCIDeviceBindToStub): Likewise.
* src/util/virutil.c (virIsCapableVport): Likewise.
* tools/virsh-domain-monitor.c (cmdDomMemStat): Likewise.
* tools/virsh-domain.c (cmdBlockResize, cmdScreenshot)
(cmdInjectNMI, cmdSendKey, cmdSendProcessSignal)
(cmdDetachInterface): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Use of an 'int' to represent a 'bool' value is confusing. Just
because dbus made the mistake of cementing their 4-byte wire
format of dbus_bool_t into their API doesn't mean we have to
repeat the mistake. With a little bit of finesse, we can
guarantee that we provide a large-enough value to the DBus
code, while still copying only the relevant one-byte bool
to the client code, and isolate the rest of our code base from
the DBus stupidity.
* src/util/virdbus.c (GET_NEXT_VAL): Add parameter.
(virDBusMessageIterDecode): Adjust all clients.
* src/util/virpolkit.c (virPolkitCheckAuth): Use nicer type.
* tests/virdbustest.c (testMessageSimple, testMessageStruct):
Test new behavior.
Signed-off-by: Eric Blake <eblake@redhat.com>
This function returned non-inactive domains instead of active
domains. This broke virConnectNumOfDefinedDomains() and
virConnectListDefinedDomains() functions.
Ethernet interfaces in libvirt currently do not support bandwidth setting.
For example, following xml file for an interface will not apply these
settings to corresponding qdiscs.
<interface type="ethernet">
<mac address="02:36:1d:18:2a:e4"/>
<model type="virtio"/>
<script path=""/>
<target dev="tap361d182a-e4"/>
<bandwidth>
<inbound average="984" peak="1024" burst="64"/>
<outbound average="2000" peak="2048" burst="128"/>
</bandwidth>
</interface>
Signed-off-by: Anirban Chakraborty <abchak@juniper.net>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
For some reason, commit id '72b4151f' triggered a Coverity uninitialized
'reply' variable check when referenced within the for loop.
It seems Coverity doesn't know that flags will have to be either AFFECT_LIVE
or AFFECT_CONFIG after the virDomainLiveConfigHelperMethod call.
By adding a "sa_assert()" to confirm that fact, Coverity is happy again.
https://bugzilla.redhat.com/show_bug.cgi?id=1164080
After a disk is hotunplugged a subsequent call to qemuDomainGetBlockIoTune
to get the --config settings of that disk will fail because the disk is no
longer found by qemuDiskPathToAlias causing an unexpected failure.
Since only the --live flag needs to have the disk device pointer, move the
fetch inside the (flags & VIR_DOMAIN_AFFECT_LIVE) condition. This will also
affect the results if no flags are provided or the --current flag is provided.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Seems the 'size_iops_sec' was a late add and the checks for whether
the field was defined, but unsupported and the maximum size of the
field were not being made.
Also, adjust blkdeviotune support error message for grammar, spelling
(paramater), and remove the "(need QEMU 1.7 or superior)". None of
our other similar error messages list which QEMU version is required.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rule sc_prohibit_newline_at_end_of_diagnostic for syntax-check does
check for passing strings ending with '\n' two lines after known
functions. This is, of course subject to false positives, so for the
sake of future changes, trick that syntax-check by adding one more line
with a comment.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
A previous commit introduced use of locking with invocation
of iptables in the viriptables.c module
commit ba95426d6f
Author: Serge Hallyn <serge.hallyn@ubuntu.com>
Date: Fri Nov 1 12:36:59 2013 -0500
util: use -w flag when calling iptables
This only ever had effect with the virtual network driver,
as it was not wired up into the nwfilter driver. Unfortunately
in the firewall refactoring the use of the -w flag was
accidentally lost.
This patch introduces it to the virfirewall.c module so that
both the virtual network and nwfilter drivers will be using
it. It also ensures that the equivalent --concurrent flag
to ebtables is used.
Since QEMU 1.2.0, we switched to QMP probing instead of parsing -help
(and other commands, such as -cpu ?) output. However, if QMP probing
failed, we still tried starting QEMU with various options and parsing
the output, which was guaranteed to fail because the output changed.
Let's just refuse parsing -help for QEMU >= 1.2.0.
https://bugzilla.redhat.com/show_bug.cgi?id=1160318
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We used to set migration capabilities only when a user asked for them in
flags. This is fine when migration succeeds since the QEMU process is
killed in the end but in case migration fails or if it's cancelled, some
capabilities may remain turned on with no way to turn them off. To fix
that, migration capabilities have to be turned on if requested but
explicitly turned off in case they were not requested but QEMU supports
them.
https://bugzilla.redhat.com/show_bug.cgi?id=1163953
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Rather than just picking the first CD (or failing that, HDD) we come
across, if the user has picked a boot device ordering with <boot
order=''>, respect that (and just try to boot the lowest-index device).
Adds two sets of tests to bhyve2xmlargv; 'grub-bootorder' shows that we
pick a user-specified device over the first device in the domain;
'grub-bootorder2' shows that we pick the first (lowest index) device.
When user calls setmem on a running LXC machine, we do update its cgroup
entry, however we neither update domain's runtime XML nor
we update our internal structures and this patch fixes it.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1131919
Commit 6e5c79a1 tried to fix deadlock between nwfilter{Define,Undefine}
and starting of guest, but this same deadlock exists for
updating/attaching network device to domain.
The deadlock was introduced by removing global QEMU driver lock because
nwfilter was counting on this lock and ensure that all driver locks are
locked inside of nwfilter{Define,Undefine}.
This patch extends usage of virNWFilterReadLockFilterUpdates to prevent
the deadlock for all possible paths in QEMU driver. LXC and UML drivers
still have global lock.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1143780
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In one of my previous patches (3a3c3780b) I've tried to fix the
problem of nvram path disappearing on a domain that's been
started and shut down again. I fixed this by explicitly saving
domain's config file. However, I did a bit of clumsy without
realizing we have a transient domains for which we don't save the
config file. Hence, any domain using UEFI became persistent.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1160926
Introduce a 'managed' attribute to allow libvirt to decide whether to
delete a vHBA vport created via external means such as nodedev-create.
The code currently decides whether to delete the vHBA based solely on
whether the parent was provided at creation time. However, that may not
be the desired action, so rather than delete and force someone to create
another vHBA via an additional nodedev-create allow the configuration of
the storage pool to decide the desired action.
During createVport when libvirt does the VPORT_CREATE, set the managed
value to YES if not already set to indicate to the deleteVport code that
it should delete the vHBA when the pool is destroyed.
If libvirtd is restarted all the memory only state was lost, so for a
persistent storage pool, use the virStoragePoolSaveConfig in order to
write out the managed value.
Because we're now saving the current configuration, we need to be sure
to not save the parent in the output XML if it was undefined at start.
Saving the name would cause future starts to always use the same parent
which is not the expected result when not providing a parent. By not
providing a parent, libvirt is expected to find the best available
vHBA port for each subsequent (re)start.
At deleteVport, use the new managed value to decide whether to execute
the VPORT_DELETE. Since we no longer save the parent in memory or in
XML when provided, if it was not provided, then we have to look it up.
https://bugzilla.redhat.com/show_bug.cgi?id=1160926
Passing a copy of the storage pool adapter to a function just changes the
copy of the fields in the particular function and then when returning to
the caller those changes are discarded. While not yet biting us in the
storage clean-up case, it did cause an issue for the fchost storage pool
startup case, createVport. The issue was at startup, if no parent is found
in the XML, the code will search for the 'best available' parent and then
store that in the in memory copy of the adapter. Of course, in this case
it was a copy, so when returning to the virStorageBackendSCSIStartPool that
change was discarded (or lost) from the pool->def->source.adapter which
meant at shutdown (deleteVport), the code assumed no adapter was passed
and skipped the deletion, leaving the vHBA created by libvirt still defined
requiring an additional stop of a nodedev-destroy to remove.
Adjusted the createVport to take virStoragePoolDefPtr instead of the
adapter copy. Then use the virStoragePoolSourceAdapterPtr when processing.
A future patch will need the 'def' anyway, so this just sets up for that.
https://bugzilla.redhat.com/show_bug.cgi?id=1160565
The existing code assumed that the configuration of a 'parent' attribute
was correct for the createVport path. As it turns out, that may not be
the case which leads errors during the deleteVport path because the
wwnn/wwpn isn't associated with the parent.
With this change the following is reported:
error: Failed to start pool fc_pool_host3
error: XML error: Parent attribute 'scsi_host4' does not match parent 'scsi_host3' determined for the 'scsi_host16' wwnn/wwpn lookup.
for XML as follows:
<pool type='scsi'>
<name>fc_pool</name>
<source>
<adapter type='fc_host' parent='scsi_host4' wwnn='5001a4aaf3ca174b' wwpn='5001a4a77192b864'/>
</source>
Where 'nodedev-dumpxml scsi_host16' provides:
<device>
<name>scsi_host16</name>
<path>/sys/devices/pci0000:00/0000:00:04.0/0000:10:00.0/host3/vport-3:0-11/host16</path>
<parent>scsi_host3</parent>
<capability type='scsi_host'>
<host>16</host>
<unique_id>13</unique_id>
<capability type='fc_host'>
<wwnn>5001a4aaf3ca174b</wwnn>
<wwpn>5001a4a77192b864</wwpn>
...
The patch also adjusts the description of the storage pool to describe the
restrictions.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1160565
If a 'parent' attribute is provided for the fchost, then at startup
time check to ensure it is a vport capable scsi_host. If the parent
is not vport capable, then disallow the startup. The following is the
expected results:
error: Failed to start pool fc_pool
error: XML error: parent 'scsi_host2' specified for vHBA is not vport capable
where the XML for the fc_pool is:
<pool type='scsi'>
<name>fc_pool</name>
<source>
<adapter type='fc_host' parent='scsi_host2' wwnn='5001a4aaf3ca174b' wwpn='5001a4a77192b864'/>
</source>
...
and 'scsi_host2' is not vport capable.
Providing an incorrect parent and a correct wwnn/wwpn could lead to
failures at shutdown (deleteVport) where the assumption is the parent
is for the fchost.
NOTE: If the provided wwnn/wwpn doesn't resolve to an existing scsi_host,
then we will be creating one with code (virManageVport) which
assumes the parent is vport capable.
Signed-off-by: John Ferlan <jferlan@redhat.com>
This enables booting interactive GRUB menus (e.g. install CDs) with
libvirt-bhyve.
Caveat: A terminal other than the '--console' option to 'virsh start'
(e.g. 'cu -l /dev/nmdm0B -s 115200') must be used to connect to
grub-bhyve because the bhyve loader path is synchronous and must occur
before the VM actually starts.
Changing the bhyveProcessStart logic around to accommodate '--console'
for interactive loader use seems like a significant project and probably
not worth it, if UEFI/BIOS support for bhyve is "coming soon."
We still default to bhyveloader(1) if no explicit bootloader
configuration is supplied in the domain.
If the /domain/bootloader looks like grub-bhyve and the user doesn't
supply /domain/bootloader_args, we make an intelligent guess and try
chainloading the first partition on the disk (or a CD if one exists,
under the assumption that for a VM a CD is likely an install source).
Caveat: Assumes the HDD boots from the msdos1 partition. I think this is
a pretty reasonable assumption for a VM. (DrvBhyve with Bhyveload
already assumes that the first disk should be booted.)
I've tested both HDD and CD boot and they seem to work.
Use the device type name if we know it instead of its number,
even if we can't hotplug it:
qemuMonitorJSONAttachCharDevCommand:6094 : operation failed: Unsupported
char device type '10'
virDomainChrSourceDefIsEqual should return 'true' for
identical SPICEVMC chardevs, and those that have no source
specification.
After this change, a failed hotplug no longer leaves a stale
pointer in the domain definition.
https://bugzilla.redhat.com/show_bug.cgi?id=1162097
If the memory mode is specified as 'strict' and with one node, we
get the following error when starting domain.
error: Unable to write to '$cgroup_path/cpuset.mems': Device or resource busy
XML is configured with numatune as follows:
<numatune>
<memory mode='strict' nodeset='0'/>
</numatune>
It's broken by Commit 411cea638f
which moved qemuSetupCgroupForEmulator() before setting cpuset.mems
in qemuSetupCgroupPostInit.
Directory '$cgroup_path/emulator/' is created in qemuSetupCgroupForEmulator.
But '$cgroup_path/emulator/cpuset.mems' it not set and has a default value
(all nodes, such as 0-1). Then we setup '$cgroup_path/cpuset.mems' to the
nodemask (in this case it's '0') in qemuSetupCgroupPostInit. It must fail.
This patch makes '$cgroup_path/emulator/cpuset.mems' is set before
'$cgroup_path/cpuset.mems'. The action is similar with that in
qemuDomainSetNumaParamsLive.
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
If the memory mode in numatune is not 'strict', we should not setup
cpuset.mems. Before commit 1a7be8c600
we have checked the memory mode in virDomainNumatuneGetNodeset. This
patch adds the check as before.
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
If the memory mode in numatune is specified as 'preferred' with one node
(such as nodeset='0'), domain's memory is not all in node 0 absolutely.
Assumption that node 0 doesn't have enough memory, memory can be allocated
on node 1 when qemu process startup. Then if we set cpuset.mems to '0',
it may invoke OOM.
Commit 1a7be8c600 changed the former logic of
checking memory mode in virDomainNumatuneGetNodeset. This patch adds the
check as before.
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
This patch fixes the following issues.
1) When an invalid wwn is introduced, libvirt reports
"Malformed wwn: %s". The template won't be replaced.
2) "target" option for dompmsuspend and "xml" option for
save-image-define are required options and should use
VSH_OT_DATA instead of VSH_OT_STRING as an option type.
3) A typo.
Signed-off-by: Hao Liu <hliu@redhat.com>
Coverity found out that commit cd490086 caused a possible NULL pointer
dereference. This is due to the fact, that phyp_driver is NULL at the
time of closing the socket, instead of connection_data, which kept the
socket before the mentioned commit, could not be NULL.
However, internal_socket is still the local socket that can be
closed, even unconditionally, if we initialize it to -1.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Check the arability of the options with the current qemu binary,
add them in the varable opt if yes, print a message if not.
Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
Detect if the the qemu binary currently in use support the bps_max option,
If yes add it to the command, if not, just ignore the option.
We don't print error here, because the check for invalide arguments
has alerady been made in qemu_driver.c
Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
Add support for bps_max and friends in the driver part.
In the part checking if a qemu is running, check if the running binary
support bps_max, if not print an error message, if yes add it to
"info" variable
Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Add the capability to detect if the qemu binary have the capability
to use bps_max and friends
Add a value in the enum virQEMUCapsFlags for the qemu capability.
Set it with virQEMUCapsSet if the binary suport bps_max and they friends.
Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
Modify the structure _virDomainBlockIoTuneInfo to support these the new
options.
Change the initialization of the variable expectedInfo in qemumonitorjsontest.c
to avoid compiling problem.
Add documentation about the new xml options
Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
nodeSetMemoryParameters() will call nodeSetMemoryParameterValue()
to set parameters. But it just filter the return code '-2' as
failure. Indeed we should report error when rc is negative.
https://bugzilla.redhat.com/show_bug.cgi?id=1161541
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
CPU numa topology implicitly allows memory specification in 'KiB'.
Enabling this to accept the 'unit' in which memory needs to be specified.
This now allows users to specify memory in units of choice, and
lists the same in 'KiB' -- just like other 'memory' elements in XML.
<numa>
<cell cpus='0-3' memory='1024' unit='MiB' />
<cell cpus='4-7' memory='1024' unit='MiB' />
</numa>
Also augment test cases to correctly model NUMA memory specification.
This adds the tag 'unit="KiB"' for memory attribute in NUMA cells.
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit 01b4de2b9f abstracts virDomainParseMemory()
for use by other functions in domain_conf.c
Extend the same for use, for functions outside of this file.
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Store version numbers in this format
version = 1000000 * major + 1000 * minor + micro
produced by virParseVersionString instead of dedicated enums.
Split the complex esxVI_ProductVersion enum into a simpler
esxVI_ProductLine enum and a product version number.
Relax API and product version number checks to accept everything that
is equal or greater than the supported minimum version. VMware ESX
went through 3 major versions and the vSphere API always stayed
backward compatible. This commit assumes that this will also be true
for future VMware ESX versions.
Also reword error messages in esxConnectTo* to say what was expected
and what was found instead (suggested by Richard W.M. Jones).
As reviewing patches upstream it occurred to me, that we have two
functions doing nearly the same: virDomainParseMemory which
expects XML in the following format:
<memory unit='MiB'>1337</memory>
The other function being virDomainHugepagesParseXML expecting the
following format:
<someElement size='1337' unit='MiB'/>
It wouldn't matter to have two functions handle two different
scenarios like this if we could only not copy code that handles
32bit arches around. So this code merges the common parts into
one by inventing new @units_xpath argument to
virDomainParseMemory which allows overriding the default location
of @unit attribute in XML. With this change both scenarios above
can be parsed with virDomainParseMemory.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If detect_scsi_host_caps reports errors but keeps libvirtd going on
startup, the user is misled by the error messages. Transforming them
into warning still shows the problems, but indicates this is not fatal.
Introduced by commit c63ef0452b, when nodeset is NULL, validation will
pass in virNumaSetupMemoryPolicy, but virBitmapNextSetBit must ensure
bitmap is not NULL, otherwise that might cause a segmentation fault.
This patch fixes it.
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
The shared netcf driver is stateful and inside the daemon so
there is no need to use the networkPrivateData field to get the
driver handle. Just access the global driver handle directly.
The shared network driver is stateful and inside the daemon so
there is no need to use the networkPrivateData field to get the
driver handle. Just access the global driver handle directly.
Many places already directly accessed the global driver handle
in any case, so the code could never work without relying on
this.
The shared storage driver is stateful and inside the daemon so
there is no need to use the storagePrivateData field to get the
driver handle. Just access the global driver handle directly.
Since the secondary drivers are only active when the primary
driver is also the Test driver, there is no need to use the
different type specific privateData fields.
Since the secondary drivers are only active when the primary
driver is also the Parallels driver, there is no need to use the
different type specific privateData fields. The object that was
being stored in the storagePrivateData can easily be kept in the
parallelsConn struct instead.
For inexplicable reasons the phyp driver defined two separate
structs for holding its private data. One it keeps in privateData
and the other it keeps in networkPrivateData. It uses them both
from all API driver methods. Merge the two separate structs
into one to remove this horrible abuse.
Since the secondary drivers are only active when the primary
driver is also the Hyper-V driver, there is no need to use the
different type specific privateData fields.
Since the secondary drivers are only active when the primary
driver is also the ESX driver, there is no need to use the
different type specific privateData fields.
Since the secondary drivers are only active when the primary
driver is also the remote driver, there is no need to use the
different type specific privateData fields.
The remote driver has had a long term hack to deal with the fact
that the old Xen driver worked outside libvirtd, but the rest
of the drivers worked inside. So you could have a local hypervisor
driver but everything else go via the remote driver. The Xen driver
long ago moved inside libvirtd, so this hack is no longer needed.
Thus we should open use the remote driver for secondary drivers
if the primary driver is already the remote driver.
IBM Power processors differ uniquely across generations (such as power6,
power7, power8). Each generation signifies a new PowerISA version
that exhibits features unique to that generation.
The higher 16 bits of PVR for IBM Power processors encode the CPU
generation, while the CPU chip (sub)version is encoded in lower 16 bits.
For all practical purposes of launching a VM, we care about the
generation which the vCPU will belong to, and not specifically the chip
version. This patch updates the libvirt PVR check to reflect this
relationship. It allows libvirt to select the right CPU generation
in case the exact match for a a specific CPU is not found.
Hence, there will no longer be a need to add each PowerPC CPU model to
cpu_map.xml; just adding entry for the matching ISA generation will
suffice.
It also contains changes to cpu_map.xml since processor generations
as understood by QEMU compat mode go as "power6", "power7" or "power8"
[Reference : QEMU commit 8dfa3a5e85 ]
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Pradipta Kr. Banerjee <bpradip@in.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
PowerISA allows processors to run VMs in binary compatibility ("compat")
mode supporting an older version of ISA. QEMU has recently added support to
explicitly denote a VM running in compatibility mode through commit 6d9412ea
& 8dfa3a5e85. Now, a "compat" mode VM can be run by invoking this qemu
commandline on a POWER8 host: -cpu host,compat=power7.
This patch allows libvirt to exploit cpu mode 'host-model' to describe this
new mode for PowerKVM guests. For example, when a user wants to request a
power7 vm to run in compatibility mode on a Power8 host, this can be
described in XML as follows :
<cpu mode='host-model'>
<model>power7</model>
</cpu>
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
Signed-off-by: Pradipta Kr. Banerjee <bpradip@in.ibm.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
This adds support for PowerPC Little Endian architecture.,
and allows libvirt to spawn VMs based on 'ppc64le' architecture.
Signed-off-by: Pradipta Kr. Banerjee <bpradip@in.ibm.com>
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since libvirt.h was split into several files, it is impossible to
compile anything against a VPATH-built libvirt. In VPATH, only libvirt.h
is in build/include/libvirt while all other libvirt-*.h files are in
source/include/libvirt.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
One of the latest patches (9a8fc3efc2) introduced call of
geteuid(). However, not all systems have the function
implemented, e.g. mingw. Therefore, we fail to build on those
system. The fix consist of including virutil.h which defines
geteuid in needed. Sigh.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1160084
As of b6d4dad1 (1.2.5) libvirt keeps track if domain disks have been
frozen. However, this falls into that set of information which don't
survive domain restart. Therefore, we need to clear the flag upon some
state transitions. Moreover, once we clear the flag we must update the
status file too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Extending the iothread disk support from pci to pci and ccw.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Finding the right type of disk should check for virtio as bus and
pci as device address type.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
When compiled without full numa support, the stub function for
virNumaNodeIsAvailable() just checks whether specified node is in range
<0, max); where max is maximum NUMA node available on the host. But
because the maximum node number is the highest usabe number (and not the
count of nodes), the check is incorrect as it should check whether the
specified node is in range <0, max> instead.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This is a reaction to Michal's fix [1] for non-NUMA systems that also
splits out conf/ out of util/ because libvirt_util shouldn't require
libvirt_conf if it is the other way around. This particular use case
worked, but we're trying to avoid it as mentioned [2], many times.
The only functions from virnuma.c that needed numatune_conf were
virDomainNumatuneNodesetIsAvailable() and virNumaSetupMemoryPolicy().
The first one should be in numatune_conf as it works with
virDomainNumatune, the second one just needs nodeset and mode, both of
which can be passed without the need of numatune_conf.
Apart from fixing that, this patch also fixes recently added
code (between commits d2460f85^..5c8515620) that doesn't support
non-contiguous nodesets. It uses new function
virNumaNodesetIsAvailable(), which doesn't need a stub as it doesn't use
any libnuma functions, to check if every specified nodeset is available.
[1] https://www.redhat.com/archives/libvir-list/2014-November/msg00118.html
[2] http://www.redhat.com/archives/libvir-list/2011-June/msg01040.html
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Patch 43b67f2e disallowed network tuning only with qemu driver, however
this patch moved the check for root privileges into
virNetDevBandwidthSet function, so the call should now
fail in all possible cases. A mock function was created so that the test
suite doesn't fail because of unsufficient privileges.
Since there was a valid note to patch 43b67f2e about the best spot to
check for bandwidth set call while having libvirt daemon run in session
mode, this patch reverts previous changes dealing with bandwith
(also reverts adding variable @cfg in qemuDomainGetNumaParameters which
does not have any use at the moment, but getting and unreferencing
driver's config) in qemu_driver.c and qemu_command.c. There will be
another patch in the series which introduces the fix itself.
==404== 232 bytes in 1 blocks are definitely lost in loss record 669 of 758
==404== at 0x4C2B934: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==404== by 0x52A2BF3: virAlloc (viralloc.c:144)
==404== by 0x1D49AD70: qemuMigrationCookieAddStatistics (qemu_migration.c:554)
==404== by 0x1D49AD70: qemuMigrationBakeCookie (qemu_migration.c:1228)
==404== by 0x1D4A43B8: qemuMigrationFinish (qemu_migration.c:5002)
==404== by 0x1D4C9339: qemuDomainMigrateFinish3Params (qemu_driver.c:11526)
Introduced by commit 5d6fb96
As of 90286418 the function is introduced. However, it's missing
an entry in the libvirt_private.syms so it can't be mocked.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit 28f8dfd (v1.0.0) introduced a security hole: in at least
the qemu implementation of virDomainGetXMLDesc, the use of the
flag VIR_DOMAIN_XML_MIGRATABLE (which is usable from a read-only
connection) triggers the implicit use of VIR_DOMAIN_XML_SECURE
prior to calling qemuDomainFormatXML. However, the use of
VIR_DOMAIN_XML_SECURE is supposed to be restricted to read-write
clients only. This patch treats the migratable flag as requiring
the same permissions, rather than analyzing what might break if
migratable xml no longer includes secret information.
Fortunately, the information leak is low-risk: all that is gated
by the VIR_DOMAIN_XML_SECURE flag is the VNC connection password;
but VNC passwords are already weak (FIPS forbids their use, and
on a non-FIPS machine, anyone stupid enough to trust a max-8-byte
password sent in plaintext over the network deserves what they
get). SPICE offers better security than VNC, and all other
secrets are properly protected by use of virSecret associations
rather than direct output in domain XML.
* src/remote/remote_protocol.x (REMOTE_PROC_DOMAIN_GET_XML_DESC):
Tighten rules on use of migratable flag.
* src/libvirt-domain.c (virDomainGetXMLDesc): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1159219
Users might want to update startupPolicy via the
virDomainUpdateDeviceFlags API too. This patch
implements the feature on config layer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The remote call actually doesn't free the arguments array so we leak
memory in case a domain list is specified. As the remote domain list
array consists only of stolen pointers from the actual domain objects
it's sufficient just to free the array.
Valgrind message:
==1081452== 64 bytes in 1 blocks are definitely lost in loss record 632 of 726
==1081452== at 0x4C296D0: calloc (vg_replace_malloc.c:618)
==1081452== by 0x4EA5CB4: virAllocN (viralloc.c:191)
==1081452== by 0x505D21E: remoteConnectGetAllDomainStats (remote_driver.c:7785)
==1081452== by 0x50081AA: virDomainListGetStats (libvirt-domain.c:11080)
==1081452== by 0x155249: cmdDomstats (virsh-domain-monitor.c:2147)
==1081452== by 0x12FB73: vshCommandRun (virsh.c:1935)
==1081452== by 0x133FEB: main (virsh.c:3719)
Domain memory elements such as max_balloon and cur_balloon are
implemented as 'unsigned long long', whereas the 'memory' element
in NUMA cells is implemented as 'unsigned int'.
Use the same data type (unsigned long long) for 'memory' element
in NUMA cells.
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
A domain without a console quietly dies soon after start,
because we try to set /dev/null as a controlling TTY
2014-10-30 15:10:59.705+0000: 1: error : lxcContainerSetupFDs:283 :
ioctl(TIOCSCTTY) failed: Inappropriate ioctl for device
Report an error early instead of trying to start it.
https://bugzilla.redhat.com/show_bug.cgi?id=1155410
It fails after 30 seconds with this error:
error : virDBusCall:1429 : error from service: CanSuspend:
Did not receive a reply. Possible causes include: the remote
application did not send a reply, the message bus security
policy blocked the reply, the reply timeout expired, or the
network connection was broken.
Only probe for the power mgmt capabilities when driver is non-NULL.
This speeds up domain startup by 30 seconds.
https://bugzilla.redhat.com/show_bug.cgi?id=1159227
Coverity found out the very obvious problem in the code. That is that
virPidFileReleasePath() was called only if
virPidFileAcquirePath() returned 0. But virPidFileAcquirePath() doesn't
return only 0 on success, but the FD that needs to be closed.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
In qemuMigrationFinish mig->nbd can not be initialized by
qemuMigrationEatCookie without the QEMU_MIGRATION_COOKIE_NBD flag.
That causes qemuMigrationStopNBDServer to return early without
stopping the NBD server properly.
Signed-off-by: Weiwei Li <nuonuoli@tencent.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
There was no check for 'nodeset' attribute in numatune-related
elements. This patch adds validation that any nodeset specified does
not exceed maximum host node.
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
When one domain is being undefined and at the same time started, for
example, there is a possibility of a rare problem occuring.
- Thread 1 does virDomainUndefine(), has the lock, checks that the
domain is active and because it's not, calls
virDomainObjListRemove().
- Thread 2 does virDomainCreate() and tries to lock the domain.
- Thread 1 needs to lock domain list in order to remove the domain from
it, but must unlock domain first (proper order is to lock domain list
first and the domain itself second).
- Thread 2 grabs the lock, starts the domain and releases the lock.
- Thread 1 grabs the lock and removes the domain from list.
With this patch:
- qemuDomainRemoveInactive() creates a QEMU_JOB_MODIFY if that's
possible, but since it must remove the domain from list either way,
it continues even when starting the job failed.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1150505
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
When daemon is killed right in the middle of probing a qemu binary for
its capabilities, the qemu process is left running. Next time the
daemon is starting, it cannot start the probing qemu process because the
one that's already running does have the pidfile flock()'d.
Reported-by: Wang Yufei <james.wangyufei@huawei.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This function is used to cleanup a pidfile doing whatever it takes, even
killing the owning process.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
We were missing check for the fact that the storage driver was found and
in case there is no vbox storage driver available, daemon raised the
following error each start:
error : virRegisterStorageDriver:592 : driver in
virRegisterStorageDriver must not be NULL
Fixing this makes the condition unified with networkDriver registration
in vbox as well.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Particularly in qemuBuildNumaArgStr(), there was a need for the advice
due to memory backing, which needs to know the nodeset it will be pinned
to. With newer qemu this caused the following error when starting
domain:
error: internal error: Advice from numad is needed in case of
automatic numa placement
even when starting perfectly valid domain, e.g.:
...
<vcpu placement='auto'>4</vcpu>
<numatune>
<memory mode='strict' placement='auto'/>
</numatune>
<cpu>
<numa>
<cell id='0' cpus='0' memory='524288'/>
<cell id='1' cpus='1' memory='524288'/>
</numa>
</cpu>
...
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1138545
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Hotplugging and hotunplugging char devices is only supported through
'-device' and the check for device capability should be independently.
Coverity also complains about 'tmpChr->info.alias' could be NULL and we
are dereferencing it but it somehow only in this case don't recognize
that the value is set by 'qemuAssignDeviceChrAlias' so it's clearly
false positive. Add sa_assert to make coverity happy.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Coverity is complaining about overwriting value in 'rc' variable
without using the old value because it somehow doesn't recognize that
the value is used by MACRO. The 'rc' variable is there only for checking
return code so it's save to remove it and make coverity happy.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Since commit 3f99d64 no new scsi_host pools can be defined
if one of the already defined scsi_host pools does not refer
to an accessible scsi_host adapter.
Relax the check by skipping over these inaccessible pools
when checking for duplicates.
If both source adapters are specified by a parent address,
just comparing the address is faster and catches even addresses
that do not refer to valid adapters.
This macro seems to be defined only on linux/unix and it fails during
mingw build. Its value is '16' (taken from net/if.h) so define it if
it's not defined.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit 6c9a8a4 (Oct 2014) exposed a long-standing issue on 32-bit
machines: code related to virDomainSetMemoryParameters has always
been documented as using a 64-bit limit, but it was implemented by
calling virDomainParseMemory which enforced an 'unsigned long'
limit. Since VIR_DOMAIN_MEMORY_PARAM_UNLIMITED capped to a
long is -1, but virDomainParseScaledValue no longer accepts
negative values, an attempt to use 2^53-1 as a hard memory limit
started failing the testsuite. However, the problem with capping
things artificially low has existed for much longer - ever since
commits 4888f0fb and 2e22f23 (Mar 2012) switched internal tracking
from 'unsigned long' to 'unsigned long long' (prior to that time,
the cap was a side-effect of the choice of types). We _have_ to
cap the balloon memory values, (no thanks to baked in 'unsigned long'
of API such as virDomainSetMaxMemory or virDomainGetInfo with no
counterpart API that guarantees 64-bit access to those numbers)
but memory parameters have never needed the artificial limit.
At any rate, the solution is to make the parser function gain a
parameter, and only do the reduced 32-bit cap for the values that
are constrained due to API.
* src/conf/domain_conf.h (_virDomainMemtune): Add comments.
* src/conf/domain_conf.c (virDomainParseMemory): Add parameter.
(virDomainDefParseXML): Adjust callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
commit 3e1e16aa8d (Use a port from the
migration range for NBD as well) changed ndb port allocation from
remotePorts to migrationPorts, but did not change the port releasing
process, which makes an error when migrating several times (above 64):
error: internal error: Unable to find an unused port in range
'migration' (49152-49215)
https://bugzilla.redhat.com/show_bug.cgi?id=1159245
Signed-off-by: Weiwei Li <nuonuoli@tencent.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
On error, libxlMakeDomBuildInfo() frees the caller-provided
libxl_domain_build_info struct embedded in libxl_domain_config,
causing a segfault
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f9c13020700 (LWP 40988)]
(gdb) bt
0 0x00007f9c162f95b4 in free () from /lib64/libc.so.6
1 0x00007f9c0d0965ad in libxl_bitmap_dispose () from
/usr/lib64/libxenlight.so.4.4
2 0x00007f9c0d0a73bf in libxl_domain_build_info_dispose ()
from /usr/lib64/libxenlight.so.4.4
3 0x00007f9c0d0a7974 in libxl_domain_config_dispose () from
/usr/lib64/libxenlight.so.4.4
4 0x00007f9c0d2e00c5 in libxlDomainStart (driver=0x7f9c0400e4e0,
vm=0x7f9c0412b0d0, start_paused=false, restore_fd=-1) at
libxl/libxl_domain.c:1323
5 0x00007f9c0d2e1d4b in libxlDomainCreateXML (conn=0x7f9c000009a0,...)
at libxl/libxl_driver.c:660
Remove the call to libxl_domain_build_info_dispose() from
libxlMakeDomBuildInfo(). On error, callers will dispose the
libxl_domain_config object, which in turn disposes the build info.
With the introduction of the libxlDomainGetEmulatorType function,
it is trivial to support a user-specfied <emulator> in the libxl
driver. This patch is based loosely on David Scott's old patch
to do the same
https://www.redhat.com/archives/libvir-list/2013-April/msg02119.html
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
It makes sense for none of the callers to have negative value as an
output and, fortunately, if anyone tried defining domain with negative
memory or any other value parsed by virDomainParseScaledValue(), the
resulting value was 0. That means we can error out during parsing as
it won't break anything.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1155843
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The virGetSCSIHostNumber function return type is int, however
its stubbed version returns NULL. That results in a build fail
on systems that use the stubbed version. Fix by using a proper
return type.
Currently, build fails on FreeBSD because its struct ifreq does not
have ifr_hwaddr member. In order to fix that, check if this member
is present, otherwise fall back to the stub version of the
virNetDev{Add,Del}Multi functions.
The complaint is that if cleanup is called when virFileReadAll fails,
then mcast->entries is NULL and could be dereferenced in the clear
function. After following the code some - I saw that the caller to
the function (virNetDevGetMulticastTable) will also call
virNetDevMcastListClear if this function returns -1, so this
isn't necessary, so I removed the call.
Coverity complains that because the for loop is from 0 to 5 (max tokens)
and the impending switch/case statements used each of the #define values
that the 'default' wouldn't reachable. This patch will convert the #define's
into enum's and add the obligatory dead_error_begin marker for these type
situations.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1140981 reports that
the qemu-kvm shipped as part of RHEL 7.0 intentionally[1] cripples
block jobs by removing the 'block-stream' QMP command, while still
leaving 'block-job-cancel' as an unusable no-op. Meanwhile, we
already had existing code that checked whether block jobs were
completely missing (such as qemu 0.15), old style (cancel is
synchronous, and all commands spelled with '_'), or new style
(cancel is asynchronous, and all commands spelled with '-'), and
used that three-way probe to give decent error messages. At the
time that code was added, all existing qemu versions fell in one
of three buckets, and the code was using the presence of
'block-job-cancel' as the witness of which of the three buckets.
But now that RHEL qemu has shipped with intentionally crippled
'block-stream', we have a fourth bucket, which results in ugly
error messages when trying 'virsh blockpull':
error: Requested operation is not valid: Command 'block-stream' is not found
In reality, the fourth bucket should be treated the same as the
first bucket (no block job support); we can do that by realizing
that no existing build of qemu has working block-stream while
lacking block-job-cancel, so it is easiest to change our witness
to the command that starts a job rather than ends one. We still
act correctly regarding command spelling and whether cancel is
asynchronous. And on crippled RHEL builds, we now get the desired:
error: unsupported configuration: block jobs not supported with this qemu binary
[1] The intentional cripple is limited to qemu-kvm of RHEL; when using
qemu-kvm-rhev of RHEV, block job functionality is supported. Don't ask
me to explain the "why" behind it all - I'm just dealing with fallout
from someone else's decision.
* src/qemu/qemu_capabilities.h (QEMU_CAPS_BLOCKJOB_SYNC): Tweak comment.
* src/qemu/qemu_capabilities.c (virQEMUCapsCommands): Look for stream
rather than cancel when determining the flavor of block jobs supported.
Signed-off-by: Eric Blake <eblake@redhat.com>
The code that parses the schema from the URI touches the "hosts[0]"
member of the storage file source structure in case the URI contains a
schema. The hosts array was not yet allocated at the point in the code
where the transport protocol was parsed and set. This lead to a crash of
libvirtd.
Fix the code by allocating the "hosts" array upfront and add a test case
to verify this scenario. (Unfortunately this requires shuffling the test
case numbers too).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1156288
Now that all offenders have been cleaned, turn on a syntax-check
rule to prevent future offenders.
* cfg.mk (sc_prohibit_static_zero_init): New rule.
* src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Avoid false
positive.
Signed-off-by: Eric Blake <eblake@redhat.com>
We weren't ever using the value for anything other than being non-zero.
* src/util/viraudit.h (virAuditLog): Change signature.
* src/util/viraudit.c (virAuditLog): Update user.
* daemon/libvirtd.c (main): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
As I've pushed 5892944f I haven't noticed one small nitpick.
There was this backslash missing on the line 1231 in the
enumeration of libraries to be added to vbox storage driver. This
resulted in nondeterministic build which sometimes succeeded and
sometimes failed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1146837
Resolve a crash in libvirtd resulting from commit id 'a4bd62ad' (1.0.6)
which added parentaddr and unique_id to allow unique identification of
a scsi_host, but assumed that all the pool entries and the incoming
definition would be similarly defined. If the existing pool uses the
'name' attribute and an incoming pool is using the parentaddr/unique_id,
then the code will attempt to compare the existing name string against
the incoming name string which doesn't exist (is NULL) and results in
a core (STREQ).
Conversely, if the existing pool used the parentaddr/unique_id and the
to be defined pool used the name, then the comparison would be against
the parentaddr, but since the incoming pool doesn't have one - that would
leave the comparison against a parentaddr of all 0's and a unique_id of 0,
which will always comparison to fail. This means someone could define the
same source adapter for two pools
In order to resolve this, adjust the code to get the 'host#' to be used
by the storage scsi backend in order to check/start the pool and make sure
the incoming definition doesn't match any of the existing pool defs.
https://bugzilla.redhat.com/show_bug.cgi?id=1141621
As part of attach processing, assign the device aliases by calling
qemuAssignDeviceAliases during qemuDomainQemuAttach once all the devices
are found after the qemuParseCommandLinePid processing.
This will alleviate a symptom that caused a libvirtd crash during an
attempted device detach.
In qemuDomainDetachControllerDevice if the info.alias already exists
a call to qemuAssignDeviceControllerAlias would overwrite the existing
so avoid this possibility.
Currently remote driver only initializes partial fields of
remote_connect_get_all_domain_stats_args. But xdr_array()
will check the uninitialised field 'doms_val'.
For safty reason, memset all fields of args is better.
Fix the following error from valgrind, like:
==30515== 1 errors in context 1 of 3:
==30515== Conditional jump or move depends on uninitialised value(s)
==30515== at 0x85E9402: xdr_array (xdr_array.c:88)
==30515== by 0x4FD8FC9: xdr_remote_connect_get_all_domain_stats_args (remote_protocol.c:6473)
==30515== by 0x4FE72F2: virNetMessageEncodePayload (virnetmessage.c:350)
==30515== by 0x4FDD21C: virNetClientProgramCall (virnetclientprogram.c:326)
==30515== by 0x4FB4D01: callFull.isra.2 (remote_driver.c:6667)
==30515== by 0x4FCBD45: call (remote_driver.c:6689)
==30515== by 0x4FCBD45: remoteConnectGetAllDomainStats (remote_driver.c:7793)
==30515== by 0x4FA0E75: virConnectGetAllDomainStats (libvirt.c:21678)
==30515== by 0x147FD1: cmdDomstats (virsh-domain-monitor.c:2148)
==30515== by 0x13006B: vshCommandRun (virsh.c:1915)
==30515== by 0x12A9E1: main (virsh.c:3699)
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
After rewriting the whole driver, Only version specified code is
remained in vbox_tmpl.c. So, this patch removes those unused macros
header files in vbox_tmpl.c.
The GetMedium will always return a IHardDisk object them.
In 2.2 and 3.0, it is what GetHardDisk exactly do. In 3.1 and later,
The IMedium is same as IHardDisk.
