This function can be called over a domain definition that has no
video configured. The
tests/qemuxml2argvdata/qemuxml2argv-minimal.xml file could serve
as an example. Problem is, before the check that domain has some
or none video configured, def->videos is dereferenced causing a
segmentation fault in case there's none video configured.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Add new function to manage adding the video device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the input device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Make qemuBuildUSBInputDevStr static since only this module calls it.
Also the change to use const virDomainDef forces other changes.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Modify the argument order and types to match other similar helpers.
Also modify called functions to use the def->emulator instead of passing
def->emulator and def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the console device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the channel device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the parallels device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Alter logic slight to reduce indention level.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the serial device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Using const virDomainDef causes collateral damage in other called APIs
which need to make the similar adjustment
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the smartcard device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Alter the logic slightly to make !nsmartcards check first so that remainder
of the code is less indented.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the network device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the -fsdev options to the
command line removing that task from the mainline qemuBuildCommandLine.
Alter the code slightly to perform the !caps and fsdev failure check
up front.
Since both qemuBuildFSStr and qemuBuildFSDevStr are local, make them
static and fix their prototypes to use the const virDomainDef as well.
Make some minor formatting changes for long lines.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the disk -drive options to the
command line removing that task from the mainline qemuBuildCommandLine.
Also since using const virDomainDef in new function, that means other
functions called needed to change their usage.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the hub -device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Also make qemuBuildHubDevStr static to the module since it's only
used here.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the controller -device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Also adjust to using const virDomainDef instead of virDomainDefPtr.
This causes collateral damage in order to modify called APIs to use
the const virDomainDef instead as well.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the -global controller options to
the command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the -boot options to the command
line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the power management options to the
command line removing that task from the mainline qemuBuildCommandLine.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add new function to manage adding the '-clock' options to the command
line removing that task from the mainline qemuBuildCommandLine.
Also includes some minor formatting cleanups.
Signed-off-by: John Ferlan <jferlan@redhat.com>
When debug-threads is enabled, individual threads are given a separate
name (on Linux)
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1140121
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
QEMU (somewhere around 2.0) added a new sub-option to the -name flag
-name debug-threads=on.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Currently the file based character devices let QEMU write
directly to a file on disk. This allows a malicious QEMU
to inflict a denial of service by consuming all free space.
Switch QEMU to use a pipe to virtlogd, which will enforce
file rollover.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If use of virtlogd is enabled, then use it for backing the
character device log files too. This avoids the possibility
of a guest denial of service by writing too much data to
the log file.
The functions for handling FD passing when building command line
arguments need to be used by many different bits of code, so need
to be at the start of the source file
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The act of formatting a chardev backend value may need to
append command line arguments for passing FDs. If we append
the -chardev arg before formatting the value, then the
resulting arguments will end up interspersed
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Honour the <log file='...'/> element in chardevs to output
data to a file. This requires QEMU >= 2.6
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
After adding support for offline vcpu pinning the code that removes the
pinning for cpu cold-unplug was forgotten. This fixes up commit 02ae21d
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1316371
Now that the function was extracted we can get rid of some temp
variables. Additionally formatting of the bitmap string for the event
code should be checked.
Allow pinning for inactive vcpus. The pinning mask will be automatically
applied as we would apply the default mask in case of a cpu hotplug.
Setting the scheduler settings for a vcpu has the same semantics.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1306556
Introduce a helper to check supported device and domain config and move
the memory hotplug checks to it.
The advantage of this approach is that by default all new features are
considered unsupported by all hypervisors unless specifically changed
rather than the previous approach where every hypervisor would need to
declare that a given feature is unsupported.
We would happily report and free statistics of a completed migration
even before it actually completed (on the source host while migration is
in the Finish phase).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Computing a total downtime during a migration requires us to store a
time stamp when guest CPUs get stopped. The value (and all other
statistics) is then transferred to the destination to compute the
downtime. Because the stopped time stamp is stored by a STOP event
handler while the statistics which will be sent over to the destination
are copied synchronously within qemuMigrationWaitForCompletion.
Depending on the timing of STOP and MIGRATION events, we may end up
copying (and transferring) statistics without the stopped time stamp
set. Let's make sure we always use the correct time stamp.
https://bugzilla.redhat.com/show_bug.cgi?id=1282744
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
With a very old QEMU which doesn't support events we need to explicitly
call qemuMigrationSetOffline at the end of migration to update our
internal state. On the other hand, if we talk to QEMU using QMP, we
should just wait for the STOP event and let the event handler update the
state and trigger a libvirt event.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We should not overwrite all migration statistics on the source with the
numbers sent by the destination since the source may have an updated
view in some cases (such as post-copy migration). It's safer to update
just the timing info we need to get from the destination and be prepared
for the future. And we should only do all this after a successful
migration.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Statistics for a completed migration only make sense if the migration
was successful. Let's not store them in priv->job.completed until we
are sure it was a success.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The code does not handle renaming of the save state file. In addition to
that the resuming code would need to be tweaked to handle the name
change since the XML is extracted from the save image. The easies option
is to make the rename API even less useful by forbiding this.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1314594
While trying to build with -Os couple of compile errors showed
up.
conf/domain_conf.c: In function 'virDomainChrRemove':
conf/domain_conf.c:13666:24: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virDomainChrDefPtr ret, **arrPtr = NULL;
^
Compiler fails to see that @ret is used only if set in the loop,
but whatever, there's no harm in initializing the variable.
In vboxAttachDrivesNew and _vboxAttachDrivesOld compiler thinks
that @rc may be used uninitialized. Well, not directly, but maybe
after some optimization. Yet again, no harm in initializing a
variable.
In file included from ./util/virthread.h:26:0,
from ./datatypes.h:28,
from vbox/vbox_tmpl.c:43,
from vbox/vbox_V3_1.c:37:
vbox/vbox_tmpl.c: In function '_vboxAttachDrivesOld':
./util/virerror.h:181:5: error: 'rc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
^
In file included from vbox/vbox_V3_1.c:37:0:
vbox/vbox_tmpl.c:1041:14: note: 'rc' was declared here
nsresult rc;
^
Yet again, one uninitialized variable:
qemu/qemu_driver.c: In function 'qemuDomainBlockCommit':
qemu/qemu_driver.c:17194:9: error: 'baseSource' may be used uninitialized in this function [-Werror=maybe-uninitialized]
qemuDomainPrepareDiskChainElement(driver, vm, baseSource,
^
And another one:
storage/storage_backend_logical.c: In function 'virStorageBackendLogicalMatchPoolSource.isra.2':
storage/storage_backend_logical.c:618:33: error: 'thisSource' may be used uninitialized in this function [-Werror=maybe-uninitialized]
thisSource->devices[j].path))
^
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When SPICE graphics is configured for a domain but we did not ask the
client to switch to the destination, we should not wait for
SPICE_MIGRATE_COMPLETED event (which will never come).
https://bugzilla.redhat.com/show_bug.cgi?id=1151723
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Migration statistics are not available on the destination host and
starting a query job during incoming migration is not allowed. Trying to
do that would result in
Timed out during operation: cannot acquire state change lock (held
by remoteDispatchDomainMigratePrepare3Params)
error. We should not even try to start the job.
https://bugzilla.redhat.com/show_bug.cgi?id=1278727
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
qemuProcessSetupEmulator runs at a point in time where there is only
the qemu main thread. Use virCgroupAddTask to put just that one task
into the emulator cgroup. That patch makes virCgroupMoveTask and
virCgroupAddTaskStrController obsolete.
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Move qemuProcessSetupEmulator up under qemuSetupCgroup. That way
we move the one main thread right into the emulator cgroup, instead
of moving multiple threads later on. And we do not actually want any
threads running in the parent cgroups (cpu cpuacct cpuset).
Signed-off-by: Henning Schild <henning.schild@siemens.com>
