The operation makes no sense regardless of the way how we specify disks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'persistjob' is always true and 'top' and 'base' are always NULL.
Adjust the functions to drop the arguments.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function and its callees were a bit more entangled so remove the
pre-blockdev code separately.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Previous patches removed the job submission for the handler so now even
the handler itself can be removed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code which fills 'qomName' does so only when the blockdev capability
is enabled so we don't have to check it separately as it can be only
non-NULL when blockdev is used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Active layer block commit is unconditionally supported since qemu-2.0.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'change-backing-file' command was added in qemu-2.1 and doesn't have
any dependencies. We use it as witness for using blockjobs with relative
backing paths. Always assume it's supported.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The qemu code will need to check other qemu-private conditions when
reporting success for waiting. Thus we must replace all use of it with a
qemu-specific helper. For now the helper forwards directly to
virDomainObjWait.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function would fail to release the job in case
qemuMigrationSrcIsAllowed failed.
Fixes v8.5.0-157-g69e0e33873
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Commit 62627524607f added the acquiring of a job, but it is not always
VIR_ASYNC_JOB_MIGRATION_OUT, so the code fails when doing save or anything else.
Correct the async job by passing it from the caller as another parameter.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The 'xbzrle-cache-size' parameter was added in qemu-2.11 thus all
supported qemu versions now use the new code path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The 'downtime-limit' field of 'migrate-set-parameters' was introduced in
qemu-2.8, thus all qemu versions supported by libvirt use the new code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The 'max-bandwidth' field was added as argument of
'migrate-set-parameters' in qemu-2.8, thus all qemu version supported by
libvirt already use the new code path.
This patch assumes the presence and removes the legacy code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It was always possible to modify the inactive XML, because
VIR_DOMAIN_AFFECT_CURRENT (= 0) is accepted implicitly. But now
that the logic when changing both config and live XMLs is more
robust we can accept VIR_DOMAIN_AFFECT_CONFIG flag too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are three APIs that allow changing IOThreads:
virDomainAddIOThread()
virDomainDelIOThread()
virDomainSetIOThreadParams()
In case of QEMU driver these are handled by
qemuDomainChgIOThread() which attempts to be versatile enough to
work on both inactive and live domain definitions at the same
time. However, it's a bit clumsy - when a change to live
definition succeeds but fails in inactive definition then there's
no rollback. And somewhat rightfully so - changes to live
definition are in general harder to roll back. Therefore, do what
we do elsewhere (qemuDomainAttachDeviceLiveAndConfig(),
qemuDomainDetachDeviceAliasLiveAndConfig(), ...):
1) do the change to inactive XML first,
2) in fact, do the change to a copy of inactive XML,
3) swap inactive XML and its copy only after everything
succeeded.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The domain post parse functions currently live in domain_conf.c
which thus grows always larger. Mimic what we've done for the
validation code and move the post parse code into a separate
file: domain_postparse.c.
I've started by moving every function with PostParse in its name
into the new file and then compile hunting for helper functions
only to move them as well.
In the end, I've moved virDomainDefPostParse symbol in
libvirt_private.syms into a new section. And while
virDomainDeviceDefPostParseOne() is made 'public' in
domain_postparse.h too, I'm not exporting it because it has no
caller outside src/conf/ and it's unlikely it ever will.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The flags will later be used to determine which parameters should
actually be applied.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Currently, libvirt allows only local filepaths to specify the location
of the 'nvram' image. Changing it to virStorageSource type will allow
supporting remote storage for nvram.
Signed-off-by: Prerna Saxena <prerna.saxena@nutanix.com>
Signed-off-by: Florian Schmidt <flosch@nutanix.com>
Signed-off-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Introduced in previous commit, QEMU driver needs to be taught how
to set VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and
VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX parameters on given IOThread.
Fortunately, this is fairly trivial to do and since these two
parameters are exposed in domain XML too the update of inactive
XML can be wired up too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
When a domain has a guest agent channel enabled and the agent is running
in the guest, we will get VSERPORT_CHANGE event on a destination host as
soon as we start vCPUs there. This is not an issue for normal migration,
but post-copy migration will remain running after we started vCPUs on
the destination. If it runs for more than 30s, the VSERPORT_CHANGE event
handler will fail to get a job and log the following error message:
Timed out during operation: cannot acquire state change lock (held
by monitor=remoteDispatchDomainMigrateFinish3Params)
and of course we will think the guest agent is not connected and thus
all APIs talking to it will fail. Until the agent or libvirt daemon is
restarted.
Luckily we only need to update the channel state (to mark it as
connected) and connect to the agent neither of which conflicts with
migration. Thus we can safely enable processing this event during
migration.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
So far migration could only be completed while a migration API was
running and waiting for the migration to finish. In case such API could
not be called (the connection that initiated the migration is broken)
the migration would just be aborted or left in a "don't know what to do"
state. But this will change soon and we will be able to successfully
complete such migration once we get the corresponding event from QEMU.
This is specific to post-copy migration when vCPUs are already running
on the destination and we're only waiting for all memory pages to be
transferred. Such post-copy migration (which no-one is actively
watching) is called unattended migration.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When connection breaks during post-copy migration, QEMU enters
'postcopy-paused' state. We need to handle this state and make the
situation visible to upper layers.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Even though a migration is paused, we still want to see the amount of
data transferred so far and that the migration is indeed not progressing
any further.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Obtaining a screenshot via virDomainScreenshot() works like this:
1) we create a temp file, label it, then
2) tell QEMU to store the screenshot into it, and
3) finally, open the file for transfer via virStream
Since the file is just temporary and even explicitly unlinked at
the end, no seclabel restoration is done. This makes perfect
sense for security models which attach a label to file itself
(DAC, SELinux) because the label is gone with the file. However,
for models where a list of files and allowed actions is kept on a
side (AppArmor) this approach means we just append files into the
profile and never remove them. In turn, the file grows and policy
update takes longer with each entry.
Restore the seclabel for AppArmor's sake.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The virStorageSourceGetActualType() function returns either
virStorageSource->type (which is of type virStorageType), or
virStorageSourcePoolDef->type, which really stores a value of the
same enum. Thus, the latter struct can be changed so that the
virStorageSourceGetActualType() function can return correct type
instead of generic int.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Detected by gcc 11 -Wformat-overflow:
../../src/qemu/qemu_driver.c: In function ‘qemuDomainBlockJobAbort’:
../../src/util/virerror.h:176:5: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
176 | virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
177 | __FUNCTION__, __LINE__, __VA_ARGS__)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/qemu/qemu_driver.c:14475:17: note: in expansion of macro ‘virReportError’
14475 | virReportError(VIR_ERR_OPERATION_FAILED,
| ^~~~~~~~~~~~~~
../../src/qemu/qemu_driver.c:14476:73: note: format string is defined here
14476 | _("block job '%s' failed while pivoting: %s"),
| ^~
Signed-off-by: Scott Davis <scott.davis@starlab.io>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
By default, libvirt will start a private bus and tell QEMU to connect to
it. Instead, a D-Bus "address" to connect to can be specified, or the
p2p mode enabled.
D-Bus display works best with GL & a rendernode, which can be specified
with <gl> child element.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Remove the argument from the function prototypes and the callback
handler.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The commandline generated from our XML->native convertor is the majority
of cases not usable without libvirt anyways and the situation will not
improve any more.
As of such there's no much utility of avoiding the use of stopped CPUs
flag in such case.
Remove the QEMU_BUILD_COMMAND_LINE_CPUS_RUNNING flag and the associated
logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Now that we store the state of the host FIPS mode setting in the qemu
driver object, we don't need to outsource the logic into
'qemuCheckFips'.
Additionally since we no longer support very old qemu's which would not
yet have --enable-fips we can drop the part of the comment about very
old qemus.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Automatically free the 'vm' temporary domain object and remove the
'cleanup' label and 'ret' helper variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Rather than re-query all the time we can cache the state of FIPS of the
host as it will not change during the runtime of the guest.
Introduce a 'hostFips' flag to 'virQEMUDriver' and move the code
checking the state from 'qemuCheckFips' to 'qemuStateInitialize' and
also populate 'hostFips' in qemuxml2argvtest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Introduce 'qemuBuildCommandLineFlags' and use it instead of specific
flag booleans.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Calling virDomainRestoreFlags() with no typed params results in
an error in open() because it tries to open a NULL path.
Obviously, this is wrong and path to restore from must be
provided, at least for now until other sources of restore are
introduced. Then this limitation can be relaxed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
When no VIR_DOMAIN_SAVE_PARAM_FILE typed param is set when
calling virDomainSaveParams() then in turn virQEMUFileOpenAs()
tries to open a NULL path.
We have two options now:
1) require the typed param, which in turn may be promoted to a
regular argument, or
2) use this opportunity to make the API behave like
virDomainManagedSave() and use typed params to pass extra
arguments, instead of having to invent new managed save API
with typed params.
Let's go with option 2, as it is more future proof.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
