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qemu: migration: Preserve error across qemuDomainSetMaxMemLock() on error paths

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When a VM terminates itself while it's being migrated in running state
libvirt would report wrong error:

 error: cannot get locked memory limit of process 2502057: No such file or directory

rather than the proper error:

 error: operation failed: domain is not running

Remember the error on error paths in qemuMigrationSrcConfirmPhase and
qemuMigrationSrcPerformPhase.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Peter Krempa 2024-06-13 17:02:15 +02:00
parent e00a58c10a
commit e6b94cba7e
1 changed files with 5 additions and 2 deletions
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7
src/qemu/qemu_migration.c
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@ -4015,8 +4015,6 @@ qemuMigrationSrcConfirmPhase(virQEMUDriver *driver,
qemuMigrationSrcNBDCopyCancel(vm, false,
VIR_ASYNC_JOB_MIGRATION_OUT, NULL);
virErrorRestore(&orig_err);
if (virDomainObjGetState(vm, &reason) == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_POSTCOPY) {
qemuMigrationSrcPostcopyFailed(vm);
@ -4029,6 +4027,7 @@ qemuMigrationSrcConfirmPhase(virQEMUDriver *driver,
}
qemuDomainSaveStatus(vm);
virErrorRestore(&orig_err);
}
return 0;
@ -6230,11 +6229,15 @@ qemuMigrationSrcPerformPhase(virQEMUDriver *driver,
cleanup:
if (ret < 0 && !virDomainObjIsFailedPostcopy(vm, vm->job)) {
virErrorPtr orig_err;
virErrorPreserveLast(&orig_err);
qemuMigrationSrcRestoreDomainState(driver, vm);
qemuMigrationParamsReset(vm, VIR_ASYNC_JOB_MIGRATION_OUT,
jobPriv->migParams, vm->job->apiFlags);
qemuDomainSetMaxMemLock(vm, 0, &priv->preMigrationMemlock);
qemuMigrationJobFinish(vm);
virErrorRestore(&orig_err);
} else {
if (ret < 0)
ignore_value(qemuMigrationJobSetPhase(vm, QEMU_MIGRATION_PHASE_POSTCOPY_FAILED));