We want to pass the proper opaque pointer instead of NULL to
virDomainDefParse and subsequently virDomainDefParseNode too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We want to pass the proper opaque pointer instead of NULL to
virDomainDefParseXML and subsequently virDomainDefPostParse too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Old libvirt represents
<graphics type='spice'>
<listen type='none'/>
</graphics>
as
<graphics type='spice' autoport='no'/>
In this mode, QEMU doesn't listen for SPICE connection anywhere and
clients have to use virDomainOpenGraphics* APIs to attach to the domain.
That is, the client has to run on the same host where the domains runs
and it's impossible to tell the client to reconnect to the destination
QEMU during migration (unless there is some kind of proxy on the host).
While current libvirt correctly ignores such graphics devices when
creating graphics migration cookie, old libvirt just sends
<graphics type='spice' port='0' listen='0.0.0.0' tlsPort='-1'/>
in the cookie. After seeing this cookie, we happily would call
client_migrate_info QMP command and wait for SPICE_MIGRATE_COMPLETED
event, which is quite pointless since the doesn't know where to connecti
anyway. We should just ignore such cookies.
https://bugzilla.redhat.com/show_bug.cgi?id=1376083
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When migration fails, we need to poke QEMU monitor to check for a reason
of the failure. We did this using query-migrate QMP command, which is
not supposed to return any meaningful result on the destination side.
Thus if the monitor was still functional when we detected the migration
failure, parsing the answer from query-migrate always failed with the
following error message:
"info migration reply was missing return status"
This irrelevant message was then used as the reason for the migration
failure replacing any message we might have had.
Let's use harmless query-status for poking the monitor to make sure we
only get an error if the monitor connection is broken.
https://bugzilla.redhat.com/show_bug.cgi?id=1374613
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If a migration of a domain which is already defined on the destination
host failed early (before we tried to start QEMU), we would forget to
remove the incoming transient definition. Later on when someone starts
the domain on the destination host, we will use the stale incoming
definition and the persistent definition will just be ignored.
https://bugzilla.redhat.com/show_bug.cgi?id=1368774
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Introduce a new migration cookie flag that will be used for any
configurations that are not compatible with libvirt that would not
support the specific vcpu hotplug approach. This will make sure that old
libvirt does not fail to reproduce the configuration correctly.
Since we already have a function that will generate the drivestr from
the alias, let's use it and remove the qemuDeviceDriveHostAlias.
Move the QEMU_DRIVE_HOST_PREFIX definition into qemu_alias.h
Also alter qemuAliasFromDisk to use the QEMU_DRIVE_HOST_PREFIX instead
of "drive-%s".
Older libvirt versions send persistent XML in a migration cookie even
when VIR_MIGRATE_PERSIST_DEST flag is not used, but current libvirt
properly fails if the cookie contains unexpected flags. Thus migration
from old libvirt fails with
internal error: Unsupported migration cookie feature persistent
unless VIR_MIGRATE_PERSIST_DEST flag is set.
https://bugzilla.redhat.com/show_bug.cgi?id=1320500
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Several places in the code update qemuMonitorMigrationParams structure
and qemuMigrationSetParams is then used to set them all at once.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
qemuMonitorMigrationParams is a better name for a structure which
contains various migration parameters. While doing that, we should use
full names for individual parameters.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Checking whether the function has anything to do is better done in the
function rather then requiring callers to do that.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The other two DomainHasBlockJob usage error messages don't contain
'an', so unify things to save translators some effort. Dropping
the 'an' is closer to the sentence structure in the errors from
qemuDomainDiskBlockJobIsActive as well
Validation of qemu process startup requires to know whether the process
is used for a fresh VM or whether it's reloaded from a
snapshot/migration. Pass this information in via a flag rather than
calculating it from a bunch of bools.
Until now we weren't able to add checks that would reject configuration
once accepted by the parser. This patch adds a new callback and
infrastructure to add such checks. In this patch all the places where
rejecting a now-invalid configuration wouldn't be a good idea are marked
with a new parser flag.
Historically, we added heads=1 to videos, but for example for qxl, we
did not reflect that on the command line.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1283207
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Migration API allows to specify a destination domain configuration.
Offline domain has only inactive XML and it is replaced by configuration
specified using VIR_MIGRATE_PARAM_DEST_XML param. In case of live
migration VIR_MIGRATE_PARAM_DEST_XML param is applied for active XML.
This commit introduces the new VIR_MIGRATE_PARAM_PERSIST_XML param
that can be used within live migration to replace persistent/inactive
configuration.
Required for: https://bugzilla.redhat.com/show_bug.cgi?id=835300
The only caller of this code is:
for (i = 0; i < dom->def->ngraphics; i++) {
if (dom->def->graphics[i]->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE) {
if (!(mig->graphics =
qemuMigrationCookieGraphicsAlloc(driver, dom->def->graphics[i])))
return -1;
mig->flags |= QEMU_MIGRATION_COOKIE_GRAPHICS;
break;
}
}
So this is never triggered for VNC, and in fact VNC has no support for
seamless migration anyways so that seems correct. Drop the dead VNC
handling.
I tried compiling libvirt with older gcc and probably because I used
different configure options I got some shadowed declarations.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
GCC in RHEL-6 complains about listen:
../../src/conf/domain_conf.c:23718: error: declaration of 'listen' shadows a global declaration [-Wshadow]
/usr/include/sys/socket.h:204: error: shadowed declaration is here [-Wshadow]
This renames all the listen to gListen.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit 08cc14f moved the conversion of MiB/s to B/s out of the
qemuMonitor APIs, but forgot to adjust the qemuMigrationDriveMirror
caller.
This patch will convert the migrate_speed value from MiB/s to its
mirror_speed equivalent in bytes/s.
Signed-off-by: Rudy Zhang <rudyflyzhang@gmail.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Move all code that checks host and domain. Do not check host if we use
VIR_QEMU_PROCESS_START_PRETEND flag.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Move all code that modifies only live XML to this function. The new
VIR_QEMU_PROCESS_START_PRETEND flag will be used by qemuXMLToNative and
qemuxml2argvtest later in order to reuse the same code as
qemuProcessStart uses.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The function already takes two bool arguments, switching to flags makes
it a lot easier to read. Especially in case we need to add another
boolean in the future.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When migration fails in the post-copy mode, it's impossible to just kill
the destination domain and resume the source since the source no longer
contains current guest state. Let's mark domains on both sides as
VIR_DOMAIN_PAUSED_POSTCOPY_FAILED to let the upper layer decide what to
do with them.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Migration enters "postcopy-active" state after QEMU switches to
post-copy and pauses guest CPUs. From libvirt's point of view this state
is similar to "completed" because we need to transfer guest execution to
the destination host.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Mostly it is just passing new parameter here and there. In case
of zero value we fallback to auto selecting port and thus keep
backward compatibility.
Also we need to fix places of auto selected port managment.
We should bother only when auto selected was done that is
when externally specified port is not 0.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.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>
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>
