[libvirt] [PATCH 4/7] snapshot: qemu: Add async job type for snapshots
The new external system checkpoints will require an async job while the
snapshot is taken. This patch adds QEMU_ASYNC_JOB_SNAPSHOT to track this
job type.
---
src/qemu/qemu_domain.c | 3 +++
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_process.c | 19 +++++++++++++++++++
3 files changed, 23 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 19ba099..a414ece 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -68,6 +68,7 @@ VIR_ENUM_IMPL(qemuDomainAsyncJob, QEMU_ASYNC_JOB_LAST,
"migration in",
"save",
"dump",
+ "snapshot",
);
@@ -84,6 +85,7 @@ qemuDomainAsyncJobPhaseToString(enum qemuDomainAsyncJob job,
case QEMU_ASYNC_JOB_DUMP:
case QEMU_ASYNC_JOB_NONE:
case QEMU_ASYNC_JOB_LAST:
+ case QEMU_ASYNC_JOB_SNAPSHOT:
; /* fall through */
}
@@ -106,6 +108,7 @@ qemuDomainAsyncJobPhaseFromString(enum qemuDomainAsyncJob job,
case QEMU_ASYNC_JOB_DUMP:
case QEMU_ASYNC_JOB_NONE:
case QEMU_ASYNC_JOB_LAST:
+ case QEMU_ASYNC_JOB_SNAPSHOT:
; /* fall through */
}
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 97e4346..86448d6 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -88,6 +88,7 @@ enum qemuDomainAsyncJob {
QEMU_ASYNC_JOB_MIGRATION_IN,
QEMU_ASYNC_JOB_SAVE,
QEMU_ASYNC_JOB_DUMP,
+ QEMU_ASYNC_JOB_SNAPSHOT,
QEMU_ASYNC_JOB_LAST
};
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 31909b7..0168f0e 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -2972,6 +2972,25 @@ qemuProcessRecoverJob(struct qemud_driver *driver,
}
break;
+ case QEMU_ASYNC_JOB_SNAPSHOT:
+ qemuDomainObjEnterMonitor(driver, vm);
+ ignore_value(qemuMonitorMigrateCancel(priv->mon));
+ qemuDomainObjExitMonitor(driver, vm);
+ /* resume the domain but only if it was paused as a result of
+ * creating the snapshot. */
+ if (state == VIR_DOMAIN_PAUSED &&
+ ((job->asyncJob == QEMU_ASYNC_JOB_SNAPSHOT &&
+ reason == VIR_DOMAIN_PAUSED_MIGRATION) ||
+ reason == VIR_DOMAIN_PAUSED_UNKNOWN)) {
+ if (qemuProcessStartCPUs(driver, vm, conn,
+ VIR_DOMAIN_RUNNING_UNPAUSED,
+ QEMU_ASYNC_JOB_NONE) < 0) {
+ VIR_WARN("Could not resume domain %s after snapshot",
+ vm->def->name);
+ }
+ }
+ break;
+
case QEMU_ASYNC_JOB_NONE:
case QEMU_ASYNC_JOB_LAST:
break;
--
1.7.12