It helps whe trying to match calls with virSecurityDACSetAllLabel
if the order in which devices are set/restored is the same in
both functions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When iterating over list of paths/disk sources to relabel it may
happen that the process fails at some point. In that case, for
the sake of keeping seclabel refcount (stored in XATTRs) in sync
with reality we have to perform rollback. However, if that fails
too the only thing we can do is warn user.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's important to keep XATTRs untouched (well, in the same state
they were in when entering the function). Otherwise our
refcounting would be messed up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This file implements wrappers over XATTR getter/setter. It
ensures the proper XATTR namespace is used.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For consistency, handle the @data "char **" (or remote_string)
assignments and processing similarly between various APIs
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Using a combination of VIR_ALLOC and VIR_STRDUP into a local
variable and then jumping to error on the VIR_STRDUP before
assiging it into the @data would cause a memory leak. Let's
just avoid that by assiging directly into @data.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The virtualization driver has two connections to the virtlogd daemon,
one pipe fd for writing to the log file, and one socket fd for making
RPC calls. The typical sequence is to write some data to the pipe fd and
then make an RPC call to determine the current log file offset.
Unfortunately these two operations are not guaranteed to be handling in
order by virtlogd. The event loop for virtlogd may identify an incoming
event on both the pipe fd and socket fd in the same iteration of the
event loop. It is then entirely possible that it will process the socket
fd RPC call before reading the pending log data from the pipe fd.
As a result the virtualization driver will get an outdated log file
offset reported back.
This can be seen with the QEMU driver where, when a guest fails to
start, it will randomly include too much data in the error message it
has fetched from the log file.
The solution is to ensure we have drained all pending data from the pipe
fd before reporting the log file offset. The pipe fd is always in
blocking mode, so cares needs to be taken to avoid blocking. When
draining this is taken care of by using poll(). The extra complication
is that they might already be an event loop dispatch pending on the pipe
fd. If we have just drained the pipe this pending event will be invalid
so must be discarded.
See also https://bugzilla.redhat.com/show_bug.cgi?id=1356108
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The arguments to the N_() macro must only ever be a literal string. It
is not possible to use macro arguments, or use macro string
concatenation in this context. The N_() macro is a no-op whose only
purpose is to act as a marker for xgettext when it extracts translatable
strings from the source code. Anything other than a literal string will
be silently ignored by xgettext.
Unfortunately this means that the clever MSG, MSG2 & MSG_EXISTS macros
used for building up error message strings have prevented any of the
error messages getting marked for translation. We must sadly, revert to
a more explicit listing of strings for now.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The autostart under session daemon might not behave as you'd
expect it to behave. This patch is inspired by latest
libvirt-users discussion:
https://www.redhat.com/archives/libvirt-users/2018-December/msg00047.html
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The driver is unmaintained, untested and severely broken for
quite some time now. Since nobody even reported any issue with it
let us drop it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
QEMU can report how many times during post-copy migration the domain
running on the destination host tried to access a page which has not
been migrated yet.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QEMU command line arguments are very long and currently all written
on a single line to /var/log/libvirt/qemu/$GUEST.log. This introduces
logic to add line breaks after every env variable and "-" optional
argument, and every positional argument. This will create a clearer log
file, which will in turn present better in bug reports when people cut +
paste from the log into a bug comment.
An example log file entry now looks like this:
2018-12-14 12:57:03.677+0000: starting up libvirt version: 5.0.0, qemu version: 3.0.0qemu-3.0.0-1.fc29, kernel: 4.19.5-300.fc29.x86_64, hostname: localhost.localdomain
LC_ALL=C \
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin \
HOME=/home/berrange \
USER=berrange \
LOGNAME=berrange \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-ppc64 \
-name guest=guest,debug-threads=on \
-S \
-object secret,id=masterKey0,format=raw,file=/home/berrange/.config/libvirt/qemu/lib/domain-33-guest/master-key.aes \
-machine pseries-2.10,accel=tcg,usb=off,dump-guest-core=off \
-m 1024 \
-realtime mlock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid c8a74977-ab18-41d0-ae3b-4041c7fffbcd \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=23,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-device qemu-xhci,id=usb,bus=pci.0,addr=0x1 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2018-12-14 12:57:03.730+0000: shutting down, reason=failed
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virCommand APIs do not expect to be given a NULL value for an arg
name or value. Such a mistake can lead to execution of the wrong
command, as the NULL may prematurely terminate the list of args.
Detect this and report suitable error messages.
This identified a flaw in the storage test which was passing a NULL
instead of the volume path. This flaw was then validated by an incorrect
set of qemu-img args as expected data.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Simplify adding of new errors by just adding them to the array of
messages rather than having to add conversion code.
Additionally most of the messages add the format string part as a suffix
so we can avoid some of the duplication by using a macro which adds the
suffix to the original string. This way most messages fit into the 80
column limit and only 3 exceed 100 colums.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Erik Skultety <eskultet@redhat.com>
Clarify how @info is used and what the returned values look like.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Simplify wording of the error string for VIR_ERR_OPEN_FAILED and
VIR_ERR_CALL_FAILED. The error codes itself are currently unused so it
will not impact any client.
This will simplify upcomming patch which refactors how we convert these.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Few error codes were missing the version of the message with additional
info. In case of the modified messages it's not very likely they'll ever
report any additional data, but for the sake of consistency we should
provide them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Additional information for an error message is either in form of a
string or empty. Fix two offenders. One used %d as the format modifier
and the second one always expected a string.
Thankfully, neither of the offenders are currently in effect.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We do have one for the error domain but not for the error number itself.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Require that all headers are guarded by a symbol named
LIBVIRT_$FILENAME
where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.
Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This introduces a syntax-check script that validates header files use a
common layout:
/*
...copyright header...
*/
<one blank line>
#ifndef SYMBOL
# define SYMBOL
....content....
#endif /* SYMBOL */
For any file ending priv.h, before the #ifndef, we will require a
guard to prevent bogus imports:
#ifndef SYMBOL_ALLOW
# error ....
#endif /* SYMBOL_ALLOW */
<one blank line>
The many mistakes this script identifies are then fixed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
For some reason, xdr_free uses char * instead of void * for its 2nd
argument which is passed to a custom free routine. Commit
dc54b3ec missed this detail which made the build fail on a number of
platforms. Fix it by explicitly casting the object pointer to char *
just like we do in other places throughout the code base.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When libvirt is reconnecting to running domain that uses cgroup v2
the QEMU process reports cgroup for the emulator directory because the
main thread is in that cgroup. We need to remove the "/emulator" part
in order to match with the root cgroup directory name for that domain.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The rewrite to support cgroup v2 missed this function. In cgroup v2
we have different files to track tasks.
We would fail to remove cgroup on non-systemd OSes if there is any
extra process assigned to guest cgroup because we would not kill any
process form the guest cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Turns out there some build platforms that must not define MOUNT
or VGCHANGE in config.h... So moving the commands from the storage
backend specific module into a common storage_util module causes
issues for those platforms.
So instead of assuming they are there, let's just pass the command
string to the storage util API's from the storage backend specific
code (as would have been successful before). Also modify the test
to determine whether the MOUNT and/or VGCHANGE doesn't exist and
just define it to (for example) what Fedora has for the path. Could
have just used "mount" and "vgchange" in the call, but that defeats
the purpose of adding the call to virTestClearCommandPath.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The make_nonnull_XXX methods can all fail due to OOM but this was being
silently ignored and thus also not checked by callers. Make the methods
propagate errors and use ATTRIBUTE_RETURN_CHECK to force callers to deal
with it.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.
In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.
With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to find the
author of a particular bit of code.
This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.
The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for nested KVM is handled via a kernel module configuration
parameters values for kvm_intel, kvm_amd, kvm_hv (PPC), or kvm (s390).
While it's possible to fetch the kmod config values via virKModConfig,
unfortunately that is the static value and we need to get the
current/dynamic value from the kernel file system.
So this patch adds a new API virHostKVMSupportsNesting that will
search the 3 kernel modules to get the nesting value and check if
it is 'Y' (or 'y' just in case) to return a true/false whether
the KVM kernel supports nesting.
We need to do this in order to handle cases where adjustments to
the value are made after libvirtd is started to force a refetch of
the latest QEMU capabilities since the correct CPU settings need
to be made for a guest to add the "vmx=on" to/for the guest config.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1656255
If virSecretGetSecretString is using by secretLookupByUUID,
then it's possible the found sec->usageType doesn't match the
desired @secretUsageType. If this occurs for the encrypted
volume creation processing and a subsequent pool refresh is
executed, then the secret used to create the volume will not
be found by the storageBackendLoadDefaultSecrets which expects
to find secrets by VIR_SECRET_USAGE_TYPE_VOLUME.
Add a check to virSecretGetSecretString to avoid the possibility
along with an error indicating the incorrect matched types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add the logical storage pool startup validation (xml2argv) tests.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
It's only pass as 0 or 1 and used as a bool, let's just use a bool
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Let's create helpers for each style of command line created. This
primarily is easier on the eyes rather than the large multi line
if-then-else-else clause used, but may also be useful if in the
future any particular pool needs to add to the command line based
on pool xml format.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Move virStorageBackendFileSystemMountCmd to storage_util so that
it can be used by the test harness.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Extract out the code that is used to create the MOUNT command
for starting the pool. We can use this for Storage Pool XML
to Argv testing to ensure code changes don't alter how a
storage pool is started.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624223
There are two ways to request memory preallocation on cmd line:
-mem-prealloc and .prealloc attribute for a memory-backend-file.
However, as it turns out it's not safe to use both at the same
time. If -mem-prealloc is used then qemu will fully allocate the
memory (this is done by actually touching every page that has
been allocated). Then, if .prealloc=yes is specified,
mbind(flags = MPOL_MF_STRICT | MPOL_MF_MOVE) is called which:
a) has to (possibly) move the memory to a different NUMA node,
b) can have no effect when hugepages are in play (thus ignoring user
request to place memory on desired NUMA nodes).
Prefer -mem-prealloc as it is more backward compatible
compared to switching to "-numa node,memdev= + -object
memory-backend-file".
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
So far we have two arguments that we are passing to
qemuBuildMemoryBackendProps() and that are taken from domain
private data: @qemuCaps and @autoNodeset. In the next commit I
will use one more item from there. Therefore, instead of having
it as yet another argument to the function, pass pointer to the
private data object.
There is one change in qemuDomainAttachMemory() where previously
@autoNodeset was NULL but now is priv->autoNodeset (which may be
set). This is safe to do as @autoNodeset is advisory only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624336
Add a check during virDomainDefCompatibleDevice whether the
domain supports cold/hotplug of a memory module even though
this duplicates the qemuDomainDefValidateMemoryHotplug check.
Without this check, the cold/hot plug would fail on the
subsequent mem_memory check (since it's 0). Adding a check
for max_memory > 0 would allow the subsequent hotplug check
to fail, but would cause coldplug to fail with the somewhat
opaque message "no free memory device slot available".
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
If virDomainDefCompatibleDevice fails because there is insufficient
domain def->mem.max_memory, then let's also print out that value in
the error message.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The QEMU validation code for graphics has been in place for a while, but
because it is only executed from virDomainDeviceInfoIterateInternal, it
was never run, since the iterator expects the device to have boot info
which graphics don't have. The unfortunate side effect of this whole mess
was that a few capabilities were missing from the test suite (as commit
d8266ebe1 demonstrated with graphics-spice-invalid-egl-headless test),
which in turn meant that a few graphics tests which expected a failure
happily accepted any failure the test runtime returned which made them
succeed. The impact of this was that we then allowed to start a domain
with multiple OpenGL-enabled graphics devices.
This patch enables iteration over graphics devices. Unsurprisingly,
a few tests started to fail as a result, so fix those too.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Validation of domain devices is accomplished via a generic device
iterator which takes a callback, iterates over all kinds of supported
device types and invokes the callback on every single device. However,
there might be cases when we need to alter the behaviour of the
iteration (most notably skip or include a group of devices). Therefore,
this patch introduces iterator flags.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the code was never run, it would have been very hard to spot this
mistake, especially since the compiler can't really warn about it.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit fixes a bug when you have multiple network settings defined.
Basically, if you set an IPv6 or IPv4 gateway, it carries on next
network settings. It is happening because the data is not being
initialized when a new network type is defined. So, the old data still
persists into the pointer. Another way to initialized the data was
introduced using memset() to avoid missing attributes from the struct.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit 255e0732 introduced a few graphics-related helpers. The problem
is that virDomainGraphicsNeedsAutoRenderNode returns true if it gets
NULL as a response from virDomainGraphicsNeedsAutoRenderNode. That's
okay for egl-headless because that one always needs a DRM render node,
the same is not true for SPICE though, and unless the XML specifies
<gl enable='yes'> for SPICE, there's no need for any renderer.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Disable external snapshot of a readonly disk for domains as
this operation is not very useful. Such a snapshot is not
possible for active domains but the error message from QEMU
is more cryptic:
error: internal error: unable to execute QEMU command 'transaction':
Could not create file: Permission denied
This error at least makes the error more understandable for
active domains and disallows for inactive domains as well.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If domain is killed with `xl destroy`, libvirt will not notice it and
still report the domain as running. Also trying to destroy the domain
through libvirt will fail. The only way to recover from such a situation
is to restart libvirt daemon. The problem is that even though libxl
report LIBXL_EVENT_TYPE_DOMAIN_DEATH, libvirt ignore it as all the
domain cleanup is done in a function actually destroying the domain. If
destroy is done outside of libvirt, there is no place where it would be
handled.
Fix this by doing domain cleanup in LIBXL_EVENT_TYPE_DOMAIN_DEATH too.
To avoid doing it twice, add a ignoreDeathEvent flag
libxlDomainObjPrivate, set when the domain death is triggered by libvirt
itself.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Since domain was suspended before and on failed wakeup is destroyed,
send an event.
Also, add missing libxlDomainCleanup.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Commit 017dfa27d changed a few switch statements in the LXC code to
have all possible enum values, and in the process changed the switch
statement in virLXCControllerGetNICIndexes() to return an error status
for unsupported interface types, but it erroneously put type='direct'
on the list of unsupported types.
type='direct' (implemented with a macvlan interface) is supported on
LXC, but it's interface shouldn't be placed on the list of interfaces
given to CreateMachineWithNetwork() because the interface is put
inside the container, while CreateMachineWithNetwork() only wants to
know about the parent veths of veth pairs (the parent veth remains on
the host side, while the child veth is put into the container).
Resolves: https://bugzilla.redhat.com/1656463
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virLXCControllerGetNICIndexes() was deciding whether or not to add the
ifindex for an interface's ifname to the list of ifindexes sent to
CreateMachineWithNetwork based on the interface type stored in the
config. This would be incorrect in the case of <interface
type='network'> where the network was giving out macvlan interfaces
tied to a physical device (i.e. when the actual interface type was
"direct").
Instead of checking the setting of "net->type", we should be checking
the setting of virDomainNetGetActualType(net).
I don't think this caused any actual misbehavior, it was just
technically wrong.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Most of the iptables APIs share code for the add/delete paths, but a
couple were separated. Merge the remaining APIs to facilitate future
changes.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for converting openvswitch interface configuration
to/from libvirt domXML and xl.cfg(5). The xl config syntax for
virtual interfaces is described in detail in the
xl-network-configuration(5) man page. The Xen Networking wiki
also contains information and examples for using openvswitch
in xl.cfg config format
https://wiki.xenproject.org/wiki/Xen_Networking#Open_vSwitch
Tests are added to check conversions of openvswitch tagged and
trunked VLAN configuration.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
It is currently possible to use <interface>s of type openvswitch
with the libxl driver in a non-standard way, e.g.
<interface type='bridge'>
<source bridge='ovsbr0'/>
<mac address='00:16:3e:7a:35:ce'/>
<script path='vif-openvswitch'/>
</interface>
This patch adds support for openvswitch <interface>s specified
in typical libvirt config
<interface type='bridge'>
<source bridge='ovsbr0'/>
<mac address='00:16:3e:7a:35:ce'/>
<virtualport type='openvswitch'/>
</interface>
VLAN tags and trunking are also supported using the extended
syntax for specifying an openvswitch bridge in libxl
BRIDGE_NAME[.VLAN][:TRUNK:TRUNK]
See Xen's networking wiki for more details on openvswitch support
https://wiki.xenproject.org/wiki/Xen_Networking#Open_vSwitch
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 212dc9286 made a generic qemuDomainGetIOThreadsMon which
would fail if the QEMU_CAPS_OBJECT_IOTHREAD didn't exist. Then
commit d1eac927 used that helper for the collection of all domain
stats. However, if the capability doesn't exist, then the entire
stats collection fails. Since the IOThread stats were meant to be
if available only, thus rather than failing if the capability
doesn't exist, let's just not collect the stats. Restore the caps
failure logic for qemuDomainGetIOThreadsLive.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
During qemuConnectGetAllDomainStats if qemuDomainGetStats causes
a failure, then when collecting more than one domain's worth of
statistics the loop in virDomainStatsRecordListFree would call
virDomainFree which would call virResetLastError effectively wiping
out the reason we failed leaving the caller with no idea why the
collection failed.
To fix this, let's Preserve the error and Restore it prior to return
so that a caller such as 'virsh domstats' doesn't get the generic
"error: An error occurred, but the cause is unknown".
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We already have a way stricter check in the code which is doing the
snapshot so duplicating it in the parser does not make much sense. Also
gets rid of an ugly ternary operator.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We are preparing a certain disk source passed in as '@src' so the
individual functions should use that rather than disk->src which
corresponds to the top level element of the chain only.
Without this change TLS and persistent reservations would not work for
backing images of a chain when using -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function clears and frees the passed buffers on success, but not in
one case of failure. Modify the control flow that the args are always
consumed, record it in the docs and remove few pointless cleanup paths
in callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1656014
An RNG device can consists of more devices than RND device
itself. For instance, in case of EGD there is a chardev that
connects to EGD daemon and feeds the qemu with random data. When
doing RNG device removal we have to remove the associated chardev
as well.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The way that the code is currently written makes my eyes hurt.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are two functions called from syncNicRxFilterMultiMode:
virNetDevSetRcvAllMulti() and virNetDevSetRcvMulti(). Both of
them return 0 on success and -1 on error. However, currently
their return value is checked for != 0 which conflicts with our
assumptions on retvals: a positive value is still considered
success but with current check it would lead to failure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Depending on whether QEMU actually supports the option, we can put the
'rendernode' on the '-display egl-headless' cmdline.
https://bugzilla.redhat.com/show_bug.cgi?id=1628892
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to change the permissions on the DRI device
used as the @rendernode for egl-headless graphics type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the render node DRI device into the
device cgroup list so that users don't need to add it manually via
qemu.conf file.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the DRI device into the namespace,
otherwise it will be left out from the DAC relabeling process.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unlike with SPICE and SDL which use the <gl> subelement to enable OpenGL
acceleration, specifying egl-headless graphics in the XML has
essentially the same meaning, thus in case of egl-headless we don't have
a need for the 'enable' element attribute and we'll only be interested
in the 'rendernode' one further down the road.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since we need to specify the rendernode option onto QEMU cmdline, we
need this union member to retain consistency in how we build the
cmdline.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we have QAPI introspection of display types in QEMU upstream,
we can check whether the 'rendernode' option is supported with
egl-headless display type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We're going to need a bit more logic for egl-headless down the road so
prepare a helper just like for the other display types.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Up until now, we formatted 'rendernode=' onto QEMU cmdline only if the
user specified it in the XML, otherwise we let QEMU do it for us. This
causes permission issues because by default the /dev/dri/renderDX
permissions are as follows:
crw-rw----. 1 root video
There's literally no reason why it shouldn't be libvirt picking the DRM
render node instead of QEMU, that way (and because we're using
namespaces by default), we can safely relabel the device within the
namespace.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
A few simple helpers that allow us to determine whether a graphics can
and will need to make use of a DRM render node.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is the first step towards libvirt picking the first available
render node instead of QEMU. It also makes sense for us to be able to do
that, since we allow specifying the node directly for SPICE, so if
there's no render node specified by the user, we should pick the first
available one. The algorithm used for that is essentially the same as
the one QEMU uses.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Guest network devices can set 'overflow' when there are a number of multicast
ips configured. For virtio_net, the limit is only 64. In this case, the list
of mac addresses is empty and the 'overflow' condition is set. Thus, the guest
will currently receive no multicast traffic in this state.
When 'overflow' is set in the guest, let's turn this into ALLMULTI on the host.
Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Support for armv6l qemu guests has been added.
Tested with arm1176 CPU on x86.
Signed-off-by: Stefan Schallenberg <infos@nafets.de>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Post-copy migration has been broken on the source since commit
v3.8.0-245-g32c29f10db which implemented support for
pause-before-switchover QEMU migration capability.
Even though the migration itself went well, the source did not really
know when it switched to the post-copy mode despite the messages logged
by MIGRATION event handler. As a result of this, the events emitted by
source libvirtd were not accurate and statistics of the completed
migration would cover only the pre-copy part of migration. Moreover, if
migration failed during the post-copy phase for some reason, the source
libvirtd would just happily resume the domain, which could lead to disk
corruption.
With the pause-before-switchover capability enabled, the order of events
emitted by QEMU changed:
pause-before-switchover
disabled enabled
MIGRATION, postcopy-active STOP
STOP MIGRATION, pre-switchover
MIGRATION, postcopy-active
The STOP even handler checks the migration status (postcopy-active) and
sets the domain state accordingly. Which is sufficient when
pause-before-switchover is disabled, but once we enable it, the
migration status is still active when we get STOP from QEMU. Thus the
domain state set in the STOP handler has to be corrected once we are
notified that migration changed to postcopy-active.
This results in two SUSPENDED events to be emitted by the source
libvirtd during post-copy migration. The first one with
VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED detail, while the second one reports
the corrected VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY detail. This is
inevitable because we don't know whether migration will eventually
switch to post-copy at the time we emit the first event.
https://bugzilla.redhat.com/show_bug.cgi?id=1647365
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Both VIR_DOMAIN_FEATURE_HPT and VIR_DOMAIN_FEATURE_HTM are
handled in the exact same way, so we can remove some duplicated
code without losing any functionality.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The call of virResctrlMonitorGetStats will allocate the memory for
holding cache occupancy or memory bandwidth statistics.
This patch adds the function virResctrlMonitorFreeStats as the
opposing action of virResctrlMonitorGetStats to free the memory.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Return a list of virResctrlMonitorStatsPtr instead of
a virResctrlMonitorStats array in virResctrlMonitorGetStats.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Handle PVH domain type in both directions (xen-xl->xml, xml->xen-xl).
And add a test for it.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
builder="hvm" is deprecated since Xen 4.10, new syntax is type="hvm" (or
type="pv", which is default). Since the old one is still supported,
still use it when writing native config, so the config will work on
older Xen too (and will also not complicate tests).
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Since this is something between PV and HVM, it makes sense to put the
setting in place where domain type is specified.
To enable it, use <os><type machine="xenpvh">xenpvh</type></os>. It is
also included in capabilities.xml, for every supported HVM guest type - it
doesn't seems to be any other requirement (besides new enough Xen).
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Make it easier to share HVM and PVH code where relevant. No functional
change.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
The test driver state (@testDriver) uses it's own reference counting
and locking implementation. Instead of doing that, convert @testDriver
into a virObjectLockable and use the provided functionalities.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
There are certain cases e.g. containers where the sysfs path might
exists, but might fail. Unfortunately the exact restrictions are only
known to libvirt when trying to write to it so we need to try it.
But in case it fails there is no need to fully abort, in those cases try
to fall back to the older ioctl interface which can still work.
That makes setting up a bridge in unprivileged LXD containers work.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1802906
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reported-by: Brian Candler <b.candler@pobox.com>
If migration is cancelled or confirm phase fails the domain
should be kept on the source even if VIR_MIGRATE_UNDEFINE_SOURCE
was requested.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There are some checks done when parsing a migration cookie. For
instance, one of the checks ensures that the domain is not being
migrated onto the same host. If that is the case, then we are in
big trouble because the @vm is the same domain object used by
source and it has some jobs sets and everything so recovering
from failed cookie parsing would be needlessly hard.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The function currently takes virDomainObjPtr because it's using
both: the domain definition and domain private data.
Unfortunately, this means that in prepare phase we can't parse
migration cookie before putting incoming domain def onto domain
objects list (addressed in the very next commit). Change the
arguments so that virDomainDef and private data are passed
instead of virDomainObjPtr.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There are several functions called in the cleanup path. Some of
them do report error (e.g. qemuDomainRemoveInactiveJob()) which
may result in overwriting an error reported earlier with some
less useful message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
virt-aa-helper needs to grant QEMU access to VFIO MDEV devices.
This extends commit 74e86b6b which only covered PCI hostdevs for VFIO-PCI
assignment by now also covering vfio MDEVs.
It has still the same limitations regarding the device lifecycle, IOW we're
unable to predict the actual VFIO device being created, thus we need
wildcards.
Also note that the hotplug case, where apparmor is able to detect the actual
VFIO device during runtime, is already covered by commit 606afafb.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
The path argument of virFileIsDir should be a full name
of file, pathname and filename. Fixed it by passing the
full path name to virFileIsDir.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the functions only return 0 or 1, they should return bool. I missed the
change when "refactoring" the first commit.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1545732
Implement the QEMU driver mechanism in order to set the polling
parameters for an IOThread within the bounds specified by the
QEMU qapi parameter passing.
Based heavily on patches originally posted by Pavel Hrdina
<phrdina@redhat.com>, but modified to only handle alterations
for a running guest. For the most part the API names changed,
the typed parameters removed the poll enabled value, and the
capabilities check was moved to just before the live attempt
to set. Since changes are only supported for a running guest,
no guest XML alterations were kept.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add a capability check for IOThread polling (all were added at the
same time, so only one check is necessary).
Based on code originally posted by Pavel Hrdina <phrdina@redhat.com>
with the only changes to include the more recent QEMU releases.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Rather than passing an iothread_id, let's pass a qemuMonitorIOThreadInfo
structure so that a subsequent change to modify the iothread info can
just generate and pass one.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
We're about to add a new state "modify" and thus the function
goes from just Add/Del. Use an enum to manage.
Extracted from code originally posted by Pavel Hrdina
<phrdina@redhat.com>, but placed into a separate patch.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add functions to set the IOThreadInfo param data for the live guest.
Modify the _qemuMonitorIOThreadInfo to have a flag to indicate when
a value was set so that we don't set a value unless it was desired
to be set.
Based on code originally posted by Pavel Hrdina <phrdina@redhat.com>,
but extracted into a separate patch. Note that qapi expects to receive
integer parameters rather than unsigned long long or unsigned int's.
QEMU does save the value in larger signed 64 bit values eventually.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Create a new API that will allow an adjustment of IOThread
polling parameters for the specified IOThread. These parameters
will not be saved in the guest XML. Currently the only parameters
supported will allow the hypervisor to adjust the parameters used
to limit and alter the scope of the polling interval. The polling
interval allows the IOThread to spend more or less time processing
in the guest.
Based on code originally posted by Pavel Hrdina <phrdina@redhat.com>
to add virDomainAddIOThreadParams and virDomainModIOThreadParams.
Modification of those changes to use virDomainSetIOThreadParams
instead and remove concepts related to saving the data in guest
XML as well as the way to specifically enable the polling parameters.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Process the IOThreads polling stats if available. Generate the
output params record to be returned to the caller with the three
values - poll-max-ns, poll-grow, and poll-shrink.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Separate out the fetch of the IOThread monitor call into a separate
helper so that a subsequent domain statistics change can fetch the raw
IOThread data and parse it as it sees fit.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
If there are IOThread polling values in the query-iothreads return
buffer, then fill them in and set a bool indicating their presence.
This will allow for displaying in a domain stats output eventually.
Note that the QEMU values are managed a bit differently (as int's
stored in int64_t's) than we will manage them (as unsigned long and
int values). This is intentional to allow for value validation
checking when it comes time to provide the values to QEMU.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
virXMLFormatElement() might fail, but we were not checking
its return value.
Fixing this requires us to change virDomainDeviceInfoFormat()
so that it can report an error back to the caller.
Introduced-by: 0d6b87335c
Spotted-by: Coverity
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
In many cases, an early exit from a function would cause
memory allocated by local virBuffer instances not to be
released.
Provide proper cleanup paths to solve the issue.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This avoids setting 'ret' multiple times, which will result
in errors being masked if the first operation fails but the
second one succeeds.
Introduced-by: f183b87fc1
Spotted-by: Coverity
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Trying to use virlockd to lock metadata turns out to be too big
gun. Since we will always spawn a separate process for relabeling
we are safe to use thread unsafe POSIX locks and take out
virtlockd completely out of the picture.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When metadata locking is enabled that means the security commit
processing will be run in a fork similar to how namespaces use fork()'s
for processing. This is done to ensure libvirt can properly and
synchronously modify the metadata to store the original owner data.
Since fork()'s (e.g. virFork) have been seen as a performance bottleneck
being able to disable them allows the admin to choose whether the
performance 'hit' is worth the extra 'security' of being able to
remember the original owner of a lock.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
For metadata locking we might need an extra fork() which given
latest attempts to do fewer fork()-s is suboptimal. Therefore,
there will be a qemu.conf knob to {en|dis}able this feature. But
since the feature is actually not metadata locking itself rather
than remembering of the original owner of the file this is named
as 'rememberOwner'. But patches for that feature are not even
posted yet so there is actually no qemu.conf entry in this patch
nor a way to enable this feature.
Even though this is effectively a dead code for now it is still
desired.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The TPM code currently accepts pointer to a domain definition.
This is okay for now, but in near future the security driver APIs
it calls will require domain object. Therefore, change the TPM
code to accept the domain object pointer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Both virProcessRunInMountNamespace() and virProcessRunInFork()
look very similar. De-duplicate the code and make
virProcessRunInMountNamespace() call virProcessRunInFork().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This new helper can be used to spawn a child process and run
passed callback from it. This will come handy esp. if the
callback is not thread safe.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add a new memoryBacking source type "memfd", supported by QEMU (when
the capability is available).
A memfd is a specialized anonymous memory kind. As such, an anonymous
source type could be automatically using a memfd. However, there are
some complications when migrating from different memory backends in
qemu (mainly due to the internal object naming at this point, but
there could be more). For now, it is simpler and safer to simply
introduce a new source type "memfd". Eventually, the "anonymous" type
could learn to use memfd transparently in a separate change.
The main benefits are that it doesn't need to create filesystem files,
and it also enforces sealing, providing a bit more safety.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
QEMU 3.1 should only expose the property if the host is actually
capable of creating hugetable-backed memfd. However, it may fail
at runtime depending on requested "hugetlbsize".
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit ("qemu_domain.c: moving maxCpu validation to
qemuDomainDefValidate") shortened the code of qemuProcessStartValidateXML.
The function is called only by qemuProcessStartValidate, in the
same file, and its code is now a single check that calls virDomainDefValidate.
Instead of leaving a function call just to execute a single check,
this patch puts the check in the body of qemuProcessStartValidate in the
place where qemuProcessStartValidateXML was being called. The function can
now be removed.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Previous patch removed the call to qemuProcessValidateCpuCount
from qemuProcessStartValidateXML, in qemu_process.c. The only
caller left is qemuDomainDefValidate, in qemu_domain.c.
Instead of having a public function declared inside qemu_process.c
that isn't used in that file, this patch moves the function to
qemu_domain.c, making in static and renaming it to
qemuDomainValidateCpuCount to be compliant with other static
functions names in the file.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Adding maxCpu validation in qemuDomainDefValidate allows the user to
spot over the board maxCpus counts at editing time, instead of
facing a runtime error when starting the domain. This check is also
arch independent.
This leaves us with 2 calls to qemuProcessValidateCpuCount: one in
qemuProcessStartValidateXML and the new one at qemuDomainDefValidate.
The call in qemuProcessStartValidateXML is redundant. Following
up in that code, there is a call to virDomainDefValidate, which
in turn will call config.domainValidateCallback. In this case, the
callback function is qemuDomainDefValidate. This means that, on startup
time, qemuProcessValidateCpuCount will be called twice.
To avoid that, let's also remove the qemuProcessValidateCpuCount call
from qemuProcessStartValidateXML.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuValidateCpuCount validates the maxCpus value of a domain at
startup time, preventing it to start if the value exceeds a maximum.
This checking is also done at qemu_domain.c, qemuDomainDefValidate.
However, it is done only for x86 (and even then, in a specific
scenario). We want this check to be done for all archs.
To accomplish this, let's first make qemuValidateCpuCount public so
it can be used inside qemuDomainDefValidate. The function was renamed
to qemuProcessValidateCpuCount to be compliant with the other public
methods at qemu_process.h. The method signature was slightly adapted
to fit the const 'def' variable used in qemuDomainDefValidate. This
change has no downside in in its original usage at
qemuProcessStartValidateXML.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Adding the maxCpus value in the error message of qemuValidateCpuCount
allows the user to set an acceptable maxCpus count without knowing
QEMU internals.
x86 guests, that might have been created prior to the x86
qemuDomainDefValidate maxCpus check code (that validates the maxCpus value
in editing time), will also benefit from this change.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The commit 89563efc02 fix the
monitor error when closing the QEMU monitor. The QEMU agent
has a problem similar to QEMU monitor. So fix the QEMU agent
with the same method.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We were mistakenly skipping virZPCIDeviceAddressIsEmpty() and
virZPCIDeviceAddressIsValid() when compiling on non-Linux,
which unsurprisingly ended up causing linking failures later
in the build process.
Clue-stick-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
This commit adds hotplug support for PCI devices on S390 guests.
There's no need to implement hot unplug for zPCI as QEMU implements
an unplug callback which will unplug both PCI and zPCI device in a
cascaded way.
Currently, the following PCI devices are supported:
virtio-blk-pci
virtio-net-pci
virtio-rng-pci
virtio-input-host-pci
virtio-keyboard-pci
virtio-mouse-pci
virtio-tablet-pci
vfio-pci
SCSIVhost device
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Add new functions to generate zPCI command string and append it to
QEMU command line. And the related tests are added.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch adds new functions for reservation, assignment and release
to handle the uid/fid. If the uid/fid is defined in the domain XML,
they will be reserved directly in the collecting phase. If any of them
is not defined, we will find out an available value for them from the
zPCI address hashtable, and reserve them. For the hotplug case there
might not be a zPCI definition. So allocate and reserve uid/fid the
case. Assign if needed and reserve uid/fid for the defined case.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
We should ensure that QEMU supports zPCI when a zPCI address is defined
in XML and otherwise report an error. This patch introduces a generic
validation function qemuDomainDeviceDefValidateAddress() which calls
qemuDomainDeviceDefValidateZPCIAddress() if address type is PCI address.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch introduces new XML parser/formatter functions. Uid is
16-bit and non-zero. Fid is 32-bit. They are the two attributes of zpci
which is introduced as PCI address element. Zpci element is parsed and
formatted along with PCI address. And add the related test cases.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
In order to add zPCI child element for PCI address, we update
virDomainDeviceInfoFormat() to format device info by helper function
virXMLFormatElement(). Then we could simply format zPCI address into
child buffer later.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The pci-root depends on zpci capability. So autogenerate pci-root if
zpci exists.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch provides a caching mechanism for the device address
extensions uid and fid on S390. For efficient sparse address allocation,
we introduce two hash tables for uid/fid which hold the address set
information per domain. Also in order to improve performance of
searching available value, we introduce our own callbacks for the two
hashtables. In this way, uid/fid is saved in hash key and hash value
could be any non-NULL pointer due to no operation on hash value. That is
also the reason why we don't introduce hash value free callback.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
