[libvirt] [PATCH v3 03/16] qemu: introduce QEMU_DOMAIN_JOB_STATUS_POSTCOPY
Nikolay Shirokovskiy
nshirokovskiy at virtuozzo.com
Tue Apr 11 07:39:36 UTC 2017
Current code consults job.current->stats.status to check for postcopy
state. First it is more correct to check for both job.current->status
and job.current->stats.status.code because on some paths on failures
we change only the former. Second if qemu supports migration events
then stats can change unexpectedly.
Let's introduce QEMU_DOMAIN_JOB_STATUS_POSTCOPY state for job.current->status.
This patch removes all state checking usage of stats except for
qemuDomainGetJobStatsInternal. This place will be handled separately.
---
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_driver.c | 5 +++--
src/qemu/qemu_migration.c | 18 +++++++++++-------
src/qemu/qemu_process.c | 4 ++--
5 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 0ae53ef..ba331dc 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -410,6 +410,7 @@ qemuDomainJobStatusToType(qemuDomainJobStatus status)
break;
case QEMU_DOMAIN_JOB_STATUS_ACTIVE:
+ case QEMU_DOMAIN_JOB_STATUS_POSTCOPY:
return VIR_DOMAIN_JOB_UNBOUNDED;
case QEMU_DOMAIN_JOB_STATUS_COMPLETED:
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index a5791bf..58715c2 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -102,6 +102,7 @@ VIR_ENUM_DECL(qemuDomainAsyncJob)
typedef enum {
QEMU_DOMAIN_JOB_STATUS_NONE = 0,
QEMU_DOMAIN_JOB_STATUS_ACTIVE,
+ QEMU_DOMAIN_JOB_STATUS_POSTCOPY,
QEMU_DOMAIN_JOB_STATUS_COMPLETED,
QEMU_DOMAIN_JOB_STATUS_FAILED,
QEMU_DOMAIN_JOB_STATUS_CANCELED,
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index c5cca07..48029be 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -12787,7 +12787,8 @@ qemuDomainGetJobStatsInternal(virQEMUDriverPtr driver,
}
*jobInfo = *info;
- if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE) {
+ if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE ||
+ jobInfo->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY) {
if (fetch)
ret = qemuMigrationFetchJobStatus(driver, vm, QEMU_ASYNC_JOB_NONE,
jobInfo);
@@ -12921,7 +12922,7 @@ static int qemuDomainAbortJob(virDomainPtr dom)
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_OUT &&
- (priv->job.current->stats.status == QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY ||
+ (priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY ||
(virDomainObjGetState(vm, &reason) == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_POSTCOPY))) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index e9a3fd0..b4fc46c 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -1314,6 +1314,10 @@ static void
qemuMigrationUpdateJobType(qemuDomainJobInfoPtr jobInfo)
{
switch ((qemuMonitorMigrationStatus) jobInfo->stats.status) {
+ case QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY:
+ jobInfo->status = QEMU_DOMAIN_JOB_STATUS_POSTCOPY;
+ break;
+
case QEMU_MONITOR_MIGRATION_STATUS_COMPLETED:
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_COMPLETED;
break;
@@ -1332,7 +1336,6 @@ qemuMigrationUpdateJobType(qemuDomainJobInfoPtr jobInfo)
case QEMU_MONITOR_MIGRATION_STATUS_SETUP:
case QEMU_MONITOR_MIGRATION_STATUS_ACTIVE:
- case QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY:
case QEMU_MONITOR_MIGRATION_STATUS_CANCELLING:
case QEMU_MONITOR_MIGRATION_STATUS_LAST:
break;
@@ -1438,6 +1441,7 @@ qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
break;
case QEMU_DOMAIN_JOB_STATUS_ACTIVE:
+ case QEMU_DOMAIN_JOB_STATUS_POSTCOPY:
break;
}
return 0;
@@ -1495,8 +1499,7 @@ qemuMigrationCompleted(virQEMUDriverPtr driver,
* will continue waiting until the migrate state changes to completed.
*/
if (flags & QEMU_MIGRATION_COMPLETED_POSTCOPY &&
- jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE &&
- jobInfo->stats.status == QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY) {
+ jobInfo->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY) {
VIR_DEBUG("Migration switched to post-copy");
if (updateStats &&
qemuMigrationUpdateJobStatus(driver, vm, asyncJob) < 0)
@@ -1510,7 +1513,8 @@ qemuMigrationCompleted(virQEMUDriverPtr driver,
return 0;
error:
- if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE) {
+ if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE ||
+ jobInfo->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY) {
/* The migration was aborted by us rather than QEMU itself. */
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_FAILED;
return -2;
@@ -3799,7 +3803,7 @@ qemuMigrationRun(virQEMUDriverPtr driver,
else if (rc == -1)
goto cleanup;
- if (priv->job.current->stats.status == QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY)
+ if (priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY)
inPostCopy = true;
/* When migration completed, QEMU will have paused the CPUs for us.
@@ -3851,7 +3855,7 @@ qemuMigrationRun(virQEMUDriverPtr driver,
ignore_value(virTimeMillisNow(&priv->job.completed->sent));
}
- if (priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE && !inPostCopy)
+ if (priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE)
priv->job.current->status = QEMU_DOMAIN_JOB_STATUS_FAILED;
cookieFlags |= QEMU_MIGRATION_COOKIE_NETWORK |
@@ -5221,7 +5225,7 @@ qemuMigrationFinish(virQEMUDriverPtr driver,
goto endjob;
}
- if (priv->job.current->stats.status == QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY)
+ if (priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY)
inPostCopy = true;
if (!(flags & VIR_MIGRATE_PAUSED)) {
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 1f1e2dc..42cb0d4 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -706,8 +706,8 @@ qemuProcessHandleStop(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_OUT) {
- if (priv->job.current->stats.status ==
- QEMU_MONITOR_MIGRATION_STATUS_POSTCOPY) {
+ if (priv->job.current->status ==
+ QEMU_DOMAIN_JOB_STATUS_POSTCOPY) {
reason = VIR_DOMAIN_PAUSED_POSTCOPY;
detail = VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY;
} else {
--
1.8.3.1
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