Peter Krempa [Wed, 5 Oct 2022 11:04:17 +0000 (13:04 +0200)]
util: xml: Reimplement virXPath(U)Int via virXPathEvalString
Similarly to the refactor of virXPath(U)LongLong drop the ability to
convert from the internal double value forcing the use of the 'string()'
conversion.
In case of 32 bit integers there's no problem with overflows, but we can
implement the code identically to what we have in the other helpers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Wed, 5 Oct 2022 08:45:04 +0000 (10:45 +0200)]
conf: node_device: Use 'string()' in XPath expressions for virNodeDevCapsDefParseIntOptional
Upcoming patches will require that the XML XPath query returns a string
for conversion in virXPathInt. Convert all the XPaths used with
virNodeDevCapsDefParseIntOptional which uses virXPathInt internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Wed, 5 Oct 2022 08:37:36 +0000 (10:37 +0200)]
conf: node_device: Use 'string()' in XPath expressions for virNodeDevCapsDefParseUInt
Upcoming patches will require that the XML XPath query returns a string
for conversion in virXPathUInt. Convert all the XPaths used with
virNodeDevCapsDefParseUInt which uses virXPathUInt internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
- New machine types and corresponding objects:
- pc-i440fx-7.2, pc-i440fx-7.2-machine, pc-q35-7.2, pc-q35-7.2-machine
- new NETDEV_STREAM_CONNECTED/NETDEV_STREAM_DISCONNECTED events
- thread-context object and prealloc-property for memory devices added
- libblkio block driver backed support added:
- new backend protocol drivers:
- io_uring, nvme-io_uring, virtio-blk-vhost-user, virtio-blk-vhost-vdpa
- New CPU flags and some CPU features become migratable
(corresponding 'cpu-host-model' test changed output)
- cpu features 'avx', 'avx2', 'f16c', 'fma', 'vaes' became available in
TCG
- 'dumpdtb' command added
- New disk frontend properties:
- account-failed, account-invalid
- New unstable commands for debugging virtio:
x-query-virtio, x-query-virtio-status, x-query-virtio-queue-status,
x-query-virtio-vhost-queue-status, x-query-virtio-queue-element
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Mon, 31 Oct 2022 15:26:17 +0000 (16:26 +0100)]
qemu_namespace: Make qemuDomainGetPreservedMounts() more robust wrt running VMs
The aim of qemuDomainGetPreservedMounts() is to get a list of
filesystems mounted under /dev and optionally generate a path for
each one where they are moved temporarily when building the
namespace. And if given domain is also running it looks into its
mount table rather than at the host one. But if it did look at
the domain's private mount table, it find /dev mounted twice: the
first time by udev, the second time the tmpfs mounted by us.
Now, later in the function there's a "sorting" algorithm that
tries to reduce number of mount points needing preservation, by
identifying nested mount points. And if we keep the second
occurrence of /dev on the list, well, after the "sorting" we are
left with nothing but "/dev" because all other mount points are
nested.
Fixes: 46b03819ae8d833b11c2aaccb2c2a0361727f51b Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Mon, 31 Oct 2022 14:38:13 +0000 (15:38 +0100)]
qemu_namespace: Don't leak memory in qemuDomainGetPreservedMounts()
The aim of qemuDomainGetPreservedMounts() is to get a list of
filesystems mounted under /dev and optionally generate a path for
each one where they are moved temporarily when building the
namespace. And the function tries to be a bit clever about it.
For instance, if /dev/shm mount point exists, there's no need to
consider /dev/shm/a nor /dev/shm/b as preserving just 'top level'
/dev/shm gives the same result. To achieve this, the function
iterates over the list of filesystem as returned by
virFileGetMountSubtree() and removes the nested ones. However, it
does so in a bit clumsy way: plain VIR_DELETE_ELEMENT() is used
without freeing the string itself. Therefore, if all three
aforementioned example paths appeared on the list, /dev/shm/a and
/dev/shm/b strings would be leaked.
And when I think about it more, there's no real need to shrink
the array down (realloc()). It's going to be free()-d when
returning from the function. Switch to
VIR_DELETE_ELEMENT_INPLACE() then.
Fixes: cdd9205dfffa3aaed935446a41f0d2dd1357c268 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Wed, 5 Oct 2022 07:53:04 +0000 (09:53 +0200)]
util: xml: Remove double->(u)ll conversion in virXPath(U)LongLong
The conversion from double is not precise enough at the extremes so it
must not be used.
Spell out that the callers are required to use a string() conversion in
the XPath expression and remove the code path handling the direct
conversion from numbers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Wed, 5 Oct 2022 07:46:11 +0000 (09:46 +0200)]
util: xml: Extract XPath evaluation for strings
Extract the internals of virXPathString which evaluate the XPath and
validate that the returned object is a string into a new helper named
'virXPathEvalString'.
The function will be later reused in the number XPath evaluation
functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Tue, 4 Oct 2022 15:06:14 +0000 (17:06 +0200)]
conf: Always use 'string()' conversion with virXPath(U)LongLong
When the 'string()' conversion is used the number is parsed inside
libvirt by our internal helpers which work on integers in contrast to
when 'number()' is used and libxml2 uses a 'double' variable internally.
On the upper extremes of the 64 bit variables the double precision
variable doesn't have enough precision to represent each distinct
integer and thus could cause problems.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
The node device APIs which get XML from the user don't yet support XML
validation flags. Introduce virNodeDeviceCreateXMLFlags and
virNodeDeviceDefineXMLFlags with the appropriate flags and add virsh
support for the new flags.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Peter Krempa [Thu, 13 Oct 2022 14:38:23 +0000 (16:38 +0200)]
schema: domain: Allow interleaving of subelements of disk's 'mirror'
While for now the 'mirror' element is output only, the idea was to allow
it to be used for input too to restore the mirror job if that becomes
the necessity. Allowing interleaving of the subelements can be done
regardless.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Tue, 1 Nov 2022 09:39:16 +0000 (10:39 +0100)]
Document caveats of 'VIR_DOMAIN_STATS_VM' group of statistics
The original patches adding the functionality neglected to add any form
of documentation for the stats fields returned for this group.
The stats are directly converted from qemu's 'query-stats(-schema)' QMP
command without any further interpretation. The 'query-stats-schema' has
the following disclaimer:
Note: runtime-collected statistics and their names fall outside QEMU's usual
deprecation policies. QEMU will try to keep the set of available data
stable, together with their names, but will not guarantee stability
at all costs; the same is true of providers that source statistics
externally, e.g. from Linux. For example, if the same value is being
tracked with different names on different architectures or by different
providers, one of them might be renamed. A statistic might go away if
an algorithm is changed or some code is removed; changing a default
might cause previously useful statistics to always report 0. Such
changes, however, are expected to be rare.
Since libvirt is not doing any form of conversion of the stats we can't
meaningfully document any of the returned fields. At the same time we
can't even meaningfully provide any form of API stability for the field
names.
Modify the documentation for the 'VIR_DOMAIN_STATS_VM' group both in the
API docs and in the virsh man page to reflect that and disclaim any form
of stability guarantees we provide normally.
Fixes: 8c9e3dae142 Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Cole Robinson [Thu, 27 Oct 2022 12:51:25 +0000 (08:51 -0400)]
tests: Fix libxlxml2domconfigtest with latest xen
shadow_memkb is populated from a libxl API call, and the value can
change. For example:
https://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=2c992810854a15b41be920519ce83a4a328d5168
Mock libxl_get_required_shadow_memory to give consistent output
Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Cole Robinson <crobinso@redhat.com>
docs: Remind users to remove --timeout option without socket activation
There is part of our man page that describes how to switch to the
traditional (non-socket) activation but it might still happens sometimes that
there is an extra --timeout option specified for the daemon.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Remove Before=libvirt-guests.service from other services
libvirt-guests has After= dependency for all the sockets and that is enough.
With the extra Before= in the service file systemd postpones the start of the
socket activated service (when libvirt-guests is trying to connect to the
socket) until after libvirt-guests is stopped effectively making `systemctl stop
libvirt-guests` deadlock. The reason for that is that all stop jobs are
scheduled before any start job. Removing the redundant Before= specification
fixes this behaviour.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Michal Privoznik [Tue, 25 Oct 2022 13:56:33 +0000 (15:56 +0200)]
node_device_driver.h: Drop nodeDeviceLock() and nodeDeviceUnlock() fwd declarations
The node_device_driver.h declares nodeDeviceLock() and
nodeDeviceUnlock() functions which used to exist, but after
rework to automatic mutex management they exist no more. Their
last use was removed in v8.1.0-rc1~122.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Michal Privoznik [Tue, 25 Oct 2022 14:27:14 +0000 (16:27 +0200)]
node_device: Move fwd declaration of udevNodeRegister() into correct header file
Currently, udevNodeRegister() is forward declared in
node_device_driver.h even though the function is implemented in
node_device_udev.c which warrants node_device_udev.h header file.
Move the declaration into the correct file.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
This fix of the issue is incorrect and breaks usage of other controllers
in hybrid mode that systemd creates, specifically usage of devices and
cpuacct controllers as they are now assumed to be part of the cgroup v2
topology which is not true.
We need to find different solution to the issue.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Erik Skultety [Thu, 13 Oct 2022 08:59:08 +0000 (10:59 +0200)]
ci: integration: Bundle only failed Avocado test results
Latest versions of Avocado create 'by-status' symlink shortcuts to test
results, IOW:
# this is the main test results directory containing all data
$ ls <path>/avocado/job-results/latest/test-results/
01-scripts_networks_050-transient-lifecycle.t
02-scripts_networks_051-transient-autostart.t
...
22-scripts_networks_400-guest-bandwidth.t
by_status/
# list only the failed tests
$ ls -l <path>/avocado/job-results/latest/test-results/by-status/FAIL
19-scripts_networks_360-guest-network-vepa.t ->
<path>/avocado/job-results/latest/test-results/19-scripts_networks_360-guest-network-vepa.t
Therefore, let's bundle only the failed ones, it's going to make the
log artifacts more obvious when looking for libvirt errors.
Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Erik Skultety [Fri, 14 Oct 2022 10:36:06 +0000 (12:36 +0200)]
ci: integration: Use 'set +e' in the log collecting job
All 'script' blocks are defined as 'set -e' and so a single failed
return value means we won't collect some of the logs. Because of
the nature of the original job's failure some of the log sources
might not be available, but that's fine, however, the gitlab
after_script job cannot finish prematurely.
Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Erik Skultety [Fri, 14 Oct 2022 07:35:04 +0000 (09:35 +0200)]
ci: integration: Only create a coredump log when a core exists
It could be quite confusing looking at the job log artifacts and having
an empty coredump log in there, IOW it doesn't really give much
confidence that the reporting mechanism actually works.
Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Erik Skultety [Wed, 12 Oct 2022 15:33:27 +0000 (17:33 +0200)]
ci: integration: Add an extra level of quoting for augeas set options
Both log filters and log outputs expect string values, however, augeas
apparently requires an extra level of quotes apart from the ones we
pass via shell (see comment [1]) to work properly, otherwise augeas
ignores the value and returns 0.
Without this fix we don't set libvirt's log level to debug, we don't
set logging to a file and hence we don't include the logs in CI
artifacts in case the test suite fails.
Michal Privoznik [Mon, 24 Oct 2022 11:45:23 +0000 (13:45 +0200)]
docs: Update best practices wrt "Fixes:" and GitLab
We document that a commit fixing an issue tracked in GitLab
should put just "Fixes: #NNN" into its commit message. But when
viewing git log, having full URL which is directly clickable is
more developer friendly and GitLab is capable of handling both.
Therefore, document that users should put full URL, just like
when fixing a bug tracked in other sites.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Jiri Denemark [Wed, 12 Oct 2022 15:45:38 +0000 (17:45 +0200)]
qemu: Do not crash when canceling migration on reconnect
When libvirtd is restarted during an active outgoing migration (or
snapshot, save, or dump which are internally implemented as migration)
it wants to cancel the migration. But by a mistake in commit v8.7.0-57-g2d7b22b561 the qemuMigrationSrcCancel function is called with
wait == true, which leads to an instant crash by dereferencing NULL
pointer stored in priv->job.current.
When canceling migration to file (snapshot, save, dump), we don't need
to wait until it is really canceled as no migration capabilities or
parameters need to be restored.
On the other hand we need to wait when canceling outgoing migration and
since we don't have virDomainJobData at this point, we have to
temporarily restore the migration job to make sure we can process
MIGRATION events from QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Jiri Denemark [Tue, 11 Oct 2022 12:00:13 +0000 (14:00 +0200)]
qemu_migration: Properly wait for migration to be canceled
In my commit v8.7.0-57-g2d7b22b561 I attempted to make
qemuMigrationSrcCancel synchronous, but failed. When we are canceling
migration after some kind of error which is detected in
in qemuMigrationSrcWaitForCompletion, jobData->status will be set to
VIR_DOMAIN_JOB_STATUS_FAILED regardless on QEMU state. So instead of
relying on the translated jobData->status in qemuMigrationSrcIsCanceled
we need to check the migration status we get from QEMU MIGRATION event.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
cgroup/LXC: Do not condition availability of v2 by controllers
systemd in hybrid mode uses v1 hierarchies for controllers and v2 for
process tracking.
The LXC code uses virCgroupAddMachineProcess() to move processes into
appropriate cgroup by manipulating cgroupfs directly. (Note, despite
libvirt also supports talking to systemd directly via
org.freedesktop.machine1 API.)
If this path is taken, libvirt/lxc must convince systemd that processes
really belong to new cgroup, i.e. also the tracking v2 hierarchy must
undergo migration too.
The current check would evaluate v2 backend as unavailable with hybrid
mode (because there are no available controllers). Simplify the
condition and consider the mounted cgroup2 as sufficient to touch v2
hierarchy.
This consequently creates an issue with binding the V2 mount. In hybrid
mode the V2 filesystem may be mounted upon the V1 filesystem. By reversing
the order in which backends are mounted in virCgroupBindMount this problem
is circumvented.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/182 Signed-off-by: Eric van Blokland <mail@ericvanblokland.nl> Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Ján Tomko [Thu, 20 Oct 2022 13:04:11 +0000 (15:04 +0200)]
build: drop LINUGAS sorting rule
A recent merge request from Weblate adding a new file fails syntax-check
because it adds a new language at the end of LINGUAS, instead of sorting
it alphabetically. Rather than trying to work around it, drop this
pointless rule.
Michal Privoznik [Thu, 11 Aug 2022 10:12:35 +0000 (12:12 +0200)]
qemu: Enable for vCPUs on hotplug
As advertised in the previous commit, QEMU_SCHED_CORE_VCPUS case
is implemented for hotplug case. The implementation is very
similar to the cold boot case, except here we fork off for every
vCPU (because the implementation is done in
qemuProcessSetupVcpu() which is also the function that's called
from hotplug code). But that's okay because our hotplug APIs
allow hotplugging one device at the time.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2074559 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Thu, 11 Aug 2022 13:25:24 +0000 (15:25 +0200)]
qemu: Enable SCHED_CORE for vCPUs
For QEMU_SCHED_CORE_VCPUS case, the vCPU threads should be placed
all into one scheduling group, but not the emulator or any of its
threads. Therefore, as soon as vCPU TIDs are detected, fork off a
child which then creates a separate scheduling group and adds all
vCPU threads into it.
Please note, this commit only handles the cold boot case. Hotplug
is going to be implemented in the next commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Thu, 11 Aug 2022 14:12:24 +0000 (16:12 +0200)]
qemu: Enable SCHED_CORE for helper processes
For QEMU_SCHED_CORE_FULL case, all helper processes should be
placed into the same scheduling group as the QEMU process they
serve. It may happen though, that a helper process is started
before QEMU (cold start of a domain). But we have the dummy
process running from which the QEMU process will inherit the
scheduling group, so we can use the dummy process PID as an
argument to virCommandSetRunAmong().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Thu, 11 Aug 2022 09:57:54 +0000 (11:57 +0200)]
qemu_process: Enable SCHED_CORE for QEMU process
For QEMU_SCHED_CORE_EMULATOR or QEMU_SCHED_CORE_FULL the QEMU
process (and its vCPU threads) should be placed into its own
scheduling group. Since we have the dummy process running for
exactly this purpose use its PID as an argument to
virCommandSetRunAmong().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Wed, 10 Aug 2022 15:17:42 +0000 (17:17 +0200)]
qemu_domain: Introduce qemuDomainSchedCoreStart()
The aim of this helper function is to spawn a child process in
which new scheduling group is created. This dummy process will
then used to distribute scheduling group from (e.g. when starting
helper processes or QEMU itself). The process is not needed for
QEMU_SCHED_CORE_NONE case (obviously) nor for
QEMU_SCHED_CORE_VCPUS case (because in that case a slightly
different child will be forked off).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Tue, 26 Apr 2022 14:57:03 +0000 (16:57 +0200)]
qemu_conf: Introduce a knob to set SCHED_CORE
Ideally, we would just pick the best default and users wouldn't
have to intervene at all. But in some cases it may be handy to
not bother with SCHED_CORE at all or place helper processes into
the same group as QEMU. Introduce a knob in qemu.conf to allow
users control this behaviour.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Tue, 26 Apr 2022 12:05:27 +0000 (14:05 +0200)]
virprocess: Core Scheduling support
Since its 5.14 release the Linux kernel allows userspace to
define trusted groups of processes/threads that can run on
sibling Hyper Threads (HT) at the same time. This is to mitigate
side channel attacks like L1TF or MDS. If there are no tasks to
fully utilize all HTs, then a HT will idle instead of running a
task from another (un-)trusted group.
On low level, this is implemented by cookies (effectively an UL
value): processes in the same trusted group share the same cookie
and cookie is unique to the group. There are four basic
operations:
1) PR_SCHED_CORE_GET -- get cookie of given PID,
2) PR_SCHED_CORE_CREATE -- create a new unique cookie for PID,
3) PR_SCHED_CORE_SHARE_TO -- push cookie of the caller onto
another PID,
4) PR_SCHED_CORE_SHARE_FROM -- pull cookie of another PID into
the caller.
Since a system where the code is built can be different to the
one where the code is ran let's provide declaration of some
values. It's not unusual for distros to ship older linux-headers
than the actual kernel.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Michal Privoznik [Fri, 30 Sep 2022 14:28:24 +0000 (16:28 +0200)]
qemu: Refresh rx-filters more often
There are couple of scenarios where we need to reflect MAC change
done in the guest:
1) domain restore from a file (here, we don't store updated MAC
in the save file and thus on restore create the macvtap with
the original MAC),
2) reconnecting to a running domain (here, the guest might have
changed the MAC while we were not running),
3) migration (here, guest might change the MAC address but we
fail to respond to it,
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Tue, 18 Oct 2022 07:44:54 +0000 (09:44 +0200)]
qemu: Refresh state after restore from a save image
When restoring a domain from a save image, we need to query QEMU
for some runtime information that is not stored in status XML, or
even if it is, it's not parsed (e.g. virtio-mem actual size, or
soon rx-filters for macvtaps).
During migration, this is done in qemuMigrationDstFinishFresh(),
or in case of newly started domain in qemuProcessStart(). Except,
the way that the code is written, when restoring from a save
image (which is effectively a migration), the state is never
refreshed, because qemuProcessStart() sees incoming migration so
it does not refresh the state thinking it'll be done in the
finish phase. But restoring from a save image has no finish
phase. Therefore, refresh the state explicitly after the domain
was restored but before vCPUs are resumed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemu: Acquire QUERY job instead of MODIFY when handling NIC_RX_FILTER_CHANGED event
We are not updating domain XML to new MAC address, just merely
setting host side of macvtap. But we don't need a MODIFY job for
that, QUERY is just fine.
This allows us to process the event should it occur during
migration.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Fri, 30 Sep 2022 14:01:38 +0000 (16:01 +0200)]
qemu: Move parts of NIC_RX_FILTER_CHANGED event handling into a function
Parts of the code that responds to the NIC_RX_FILTER_CHANGED
event are going to be re-used. Separate them into a function
(qemuDomainSyncRxFilter()) and move the code into qemu_domain.c
so that it can be re-used from other places of the driver.
There's one slight change though: instead of passing device alias
from the just received event to qemuMonitorQueryRxFilter(), I've
switched to using the alias stored in our domain definition. But
these two are guaranteed to be equal. virDomainDefFindDevice()
made sure about that, if nothing else.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
projects / libvirt.git / log