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qemu: Restore original memory locking limit on reconnect

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Commit v8.4.0-287-gd4d3bb8130 tried to make sure the original
pre-migration memory locking limit is restored at the end of migration,
but it missed the case when libvirt daemon is restarted during
migration which needs to be aborted on reconnect.

And if this was not enough, I forgot to actually save the status XML
after setting the field in priv (in the commit mentioned above and also
in v8.4.0-291-gd375993ab3).

https://bugzilla.redhat.com/show_bug.cgi?id=2107424

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Jiri Denemark 2022-07-27 14:33:23 +02:00
parent 9c3d398df1
commit bb9badb916
2 changed files with 11 additions and 4 deletions
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13
src/qemu/qemu_migration.c
View File

@ -4672,10 +4672,12 @@ qemuMigrationSrcStart(virDomainObj *vm,
switch (spec->destType) {
case MIGRATION_DEST_HOST:
if (STREQ(spec->dest.host.protocol, "rdma") &&
virMemoryLimitIsSet(vm->def->mem.hard_limit) &&
qemuDomainSetMaxMemLock(vm, vm->def->mem.hard_limit << 10,
&priv->preMigrationMemlock) < 0) {
return -1;
virMemoryLimitIsSet(vm->def->mem.hard_limit)) {
if (qemuDomainSetMaxMemLock(vm, vm->def->mem.hard_limit << 10,
&priv->preMigrationMemlock) < 0)
return -1;
/* Store the original memory locking limit */
qemuDomainSaveStatus(vm);
}
return qemuMonitorMigrateToHost(priv->mon, migrateFlags,
spec->dest.host.protocol,
@ -4868,6 +4870,9 @@ qemuMigrationSrcRun(virQEMUDriver *driver,
if (qemuDomainSetMaxMemLock(vm, limit << 10, &priv->preMigrationMemlock) < 0)
goto error;
/* Store the original memory locking limit */
qemuDomainSaveStatus(vm);
}
if (storageMigration) {

2
src/qemu/qemu_process.c
View File

@ -3678,6 +3678,7 @@ qemuProcessRecoverMigration(virQEMUDriver *driver,
{
virDomainJobStatus migStatus = VIR_DOMAIN_JOB_STATUS_NONE;
qemuDomainJobPrivate *jobPriv = job->privateData;
qemuDomainObjPrivate *priv = vm->privateData;
virDomainState state;
int reason;
int rc;
@ -3727,6 +3728,7 @@ qemuProcessRecoverMigration(virQEMUDriver *driver,
qemuMigrationParamsReset(driver, vm, VIR_ASYNC_JOB_NONE,
jobPriv->migParams, job->apiFlags);
qemuDomainSetMaxMemLock(vm, 0, &priv->preMigrationMemlock);
return 0;
}