Add and use qemuProcessEventFree for freeing qemuProcessEvents. This
is less error-prone as the compiler can help us make sure that for
every new enumeration value of qemuProcessEventType the
qemuProcessEventFree function has to be adapted.
All process*Event functions are *only* called by
qemuProcessHandleEvent and this function does the freeing by itself
with qemuProcessEventFree. This means that an explicit freeing of
processEvent->data is no longer required in each process*Event
handler.
The effectiveness of this change is also demonstrated by the fact that
it fixes a memory leak of the panic info data in
qemuProcessHandleGuestPanic.
Reported-by: Wang Dong <dongdwdw@linux.vnet.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Extract out the parts of qemuDomainGetJobStatsInternal that get
the migration stats. We're about to add the ability to get just
dump information.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use the DEVICE_MISSING error code when helpers fail to find
the requested device. This makes it easier for consumers to
key off the error code rather than the error message.
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
After processing the processEvent->data for a qemuProcessEventHandler
callout, it's expected that the called processEvent->eventType helper
will perform the proper free on the data field. In this case it's
a qemuMonitorEventPanicInfoPtr.
Commit id '162efa1a' added support hotplug a redirdev, but
did not add the hot unplug. This patch will add that support
to allow usage of the detach-device --live on the device.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
A microcode update can cause the CPUID bits to change; an example
from the past was the update that disabled TSX on several Haswell
and Broadwell machines.
Therefore, place microcode version in the virQEMUCaps struct and
XML, and rebuild the cache if the versions do not match.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1522706
If domain is active, but the undefine API was called without the
VIR_DOMAIN_UNDEFINE_KEEP_NVRAM flag set, the following incorrect
error message is produced:
error: Requested operation is not valid: cannot delete inactive domain with nvram
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
==899== 39 bytes in 1 blocks are definitely lost in loss record 732 of 1,003
==899== at 0x4C2AEDF: malloc (vg_replace_malloc.c:299)
==899== by 0x8B68CE7: vasprintf (in /lib64/libc-2.25.so)
==899== by 0x55498D2: virVasprintfInternal (virstring.c:708)
==899== by 0x55499E7: virAsprintfInternal (virstring.c:729)
==899== by 0x2BECFFF0: qemuGetMemoryBackingBasePath (qemu_conf.c:1757)
==899== by 0x2BF23225: qemuStateInitialize (qemu_driver.c:893)
==899== by 0x563073D: virStateInitialize (libvirt.c:770)
==899== by 0x124CC4: daemonRunStateInit (libvirtd.c:834)
==899== by 0x55521CD: virThreadHelper (virthread.c:206)
==899== by 0x88D9686: start_thread (in /lib64/libpthread-2.25.so)
==899== by 0x8BEAEFE: clone (in /lib64/libc-2.25.so)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Creating a snapshot would introduce a possibly unsupported member for
sharing into the backing chain. Add a check to prevent that from
happening.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1511480
When doing block commit we need to allow write for members of the
backing chain so that we can commit the data into them.
qemuDomainDiskChainElementPrepare was used for this which since commit
786d8d91b4 calls qemuDomainNamespaceSetupDisk which has very adverse
side-effects, namely it relabels the nodes to the same label it has in
the main namespace. This was messing up permissions for the commit
operation since its touching various parts of a single backing chain.
Since we are are actually not introducing new images at that point add a
flag for qemuDomainDiskChainElementPrepare which will refrain from
calling to the namespace setup function.
Calls from qemuDomainSnapshotCreateSingleDiskActive and
qemuDomainBlockCopyCommon do introduce new members all calls from
qemuDomainBlockCommit do not, so the calls are anotated accordingly.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1506072
This is similar to the virDomainQemuMonitorCommand API, it can change
the domain state in a way that libvirt may not understand.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In some cases management application needs to allocate memory for
qemu upfront and then just let qemu use that. Since we don't want
to expose path for memory-backend-file anywhere in the domain
XML, we can generate predictable paths. In this case:
$memoryBackingDir/libvirt/qemu/$shortName/$alias
where $shortName is result of virDomainDefGetShortName().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This function works over domain definition and not domain object.
Its name is thus misleading.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.
Generated using
$ git grep -El '[[:blank:]][[:blank:]]\\$' | \
grep -E '*\.([chx]|am|mk)$$' | \
while read f; do \
sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
done
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
qemuDomainGetImageIds and qemuDomainStorageFileInit are helpful when
trying to access a virStorageSource from the qemu driver since they
figure out the correct uid and gid for the image.
When accessing members of a backing chain the permissions for the top
level would be used. To allow using specific permissions per backing
chain level but still allow inheritance from the parent of the chain we
need to add a new parameter to the image ID APIs.
For instance, NET_TYPE_MCAST doesn't support setting QoS. Instead
of claiming success and doing nothing, we should be explicit
about that and report an error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When starting a domain with managed save image, we try to restore it
first. If the image is corrupted, we silently unlink it and just
normally start the domain. At this point the domain has no managed save
image, yet we did not reset the hasManagedSave flag.
https://bugzilla.redhat.com/show_bug.cgi?id=1460962
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
They have to be unique within the domain. As usual, backwards
compatibility takes its price. In this particular situation we
have a device that is represented twice in a domain and so is its
alias.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
All calls to qemuMonitorGetMigrationCapability in QEMU driver are
replaced with qemuMigrationCapsGet.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
There is one limitation for using this API, when the guest is started
with all actions set to "destroy" we put "-no-reboot" on the QEMU
command line. That cannot be changed while QEMU is running and
the QEMU process is always terminated no matter what is configured
for any action.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1460677
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
There is no need to have two different enums where one has the same
values as the other one with some additions.
Currently for on_poweroff and on_reboot we allow only subset of actions
that are allowed for on_crash. This was covered in parse time using
two different enums. Now to make sure that we don't allow setting
actions that are not supported we need to check it while validating
domain config.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When libvirt older than 3.9.0 reconnected to a running domain started by
old libvirt it could have messed up the expansion of host-model by
adding features QEMU does not support (such as cmt). Thus whenever we
reconnect to a running domain, revert to an active snapshot, or restore
a saved domain we need to check the guest CPU model and remove the
CPU features unknown to QEMU. We can do this because we know the domain
was successfully started, which means the CPU did not contain the
features when libvirt started the domain.
https://bugzilla.redhat.com/show_bug.cgi?id=1495171
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When migration fails, QEMU may provide a description of the error in
the reply to query-migrate QMP command. We can fetch this error and use
it instead of the generic "unexpectedly failed" message.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Add helpers that will simplify checking if a backing file is valid or
whether it has backing store. The helper virStorageSourceIsBacking
returns true if the given virStorageSource is a valid backing store
member. virStorageSourceHasBacking returns true if the virStorageSource
has a backing store child.
Adding these functions creates a central points for further refactors.
The backing store indexes were not bound to the storage sources in any
way. To allow us to bind a given alias to a given storage source we need
to save the index in virStorageSource. The backing store ids are now
generated when detecting the backing chain.
Since we don't re-detect the backing chain after snapshots, the
numbering needs to be fixed there.
All APIs which expect a list of CPU models supported by hypervisors were
switched from char **models and int models to just accept a pointer to
virDomainCapsCPUModels object stored in domain capabilities. This avoids
the need to transform virDomainCapsCPUModelsPtr into a NULL-terminated
list of model names and also allows the various cpu driver APIs to
access additional details (such as its usability) about each CPU model.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1497396
In 0d3d020ba6c4f I've added capability to accept MAC addresses
for the API too. However, the implementation was faulty. It needs
to lookup the corresponding interface in the domain definition
and pass the ifname instead of MAC address.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1497396
The other APIs accept both, ifname and MAC address. There's no
reason virDomainInterfaceStats can't do the same.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Every caller reports the error themselves. Might as well move it
into the function and thus unify it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1447169
Since domain can have at most one watchdog it simplifies things a
bit. However, since we must be able to set the watchdog action as
well, new monitor command needs to be used.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Similarly to previous patch, for some types of interface domain
and host are on the same side of RX/TX barrier. In that case, we
need to set up the QoS differently. Well, swapped.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1497410
The comment in virNetDevTapInterfaceStats() implementation for
Linux states that packets transmitted by domain are received by
the host and vice versa. Well, this is true but not for all types
of interfaces. For instance, for macvtaps when TAP device is
hooked right onto a physical device any packet that domain sends
looks also like a packet sent to the host. Therefore, we should
allow caller to chose if the stats returned should be straight
copy or swapped.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Users might have configured interface so that it's type of
network, but the corresponding network plugs interfaces into an
OVS bridge. Therefore, we have to check for the actual type of
the interface instead of the configured one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Seeing a log message saying 'flags=93' is ambiguous & confusing unless
you happen to know that libvirt always prints flags as hex. Change our
debug messages so that they always add a '0x' prefix when printing flags,
and '0' prefix when printing mode. A few other misc places gain a '0x'
prefix in error messages too.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1448268
When migrating to a file (e.g. when doing 'virsh save file'),
couple of things are happening in the thread that is executing
the API:
1) the domain obj is locked
2) iohelper is spawned as a separate process to handle all I/O
3) the thread waits for iohelper to finish
4) the domain obj is unlocked
Now, the problem is that while the thread waits in step 3 for
iohelper to finish this may take ages because iohelper calls
fdatasync(). And unfortunately, we are waiting the whole time
with the domain locked. So if another thread wants to jump in and
say copy the domain name ('virsh list' for instance), they are
stuck.
The solution is to unlock the domain whenever waiting for I/O and
lock it back again when it finished.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
