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qemu: refactor fetching migration stats

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qemuMigrationFetchJobStatus is rather inconvinient. Some of its
callers don't need status to be updated, some don't need to update
elapsed time right away. So let's update status or elapsed time
in callers instead.

This patch drops updating job status on getting job stats by
client. This way we will not provide status 'completed' while
it is not yet updated by migration routine.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Nikolay Shirokovskiy 2017-09-01 09:49:24 +03:00 committed by Jiri Denemark
parent e796747092
commit 6a2a80c653
3 changed files with 29 additions and 42 deletions
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15
src/qemu/qemu_driver.c
View File

@ -13020,15 +13020,16 @@ qemuDomainGetJobStatsInternal(virQEMUDriverPtr driver,
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);
else
ret = qemuDomainJobInfoUpdateTime(jobInfo);
} else {
ret = 0;
if (fetch &&
qemuMigrationFetchStats(driver, vm, QEMU_ASYNC_JOB_NONE, jobInfo) < 0)
goto cleanup;
if (qemuDomainJobInfoUpdateTime(jobInfo) < 0)
goto cleanup;
}
ret = 0;
cleanup:
if (fetch)
qemuDomainObjEndJob(driver, vm);

48
src/qemu/qemu_migration.c
View File

@ -1376,24 +1376,26 @@ qemuMigrationUpdateJobType(qemuDomainJobInfoPtr jobInfo)
int
qemuMigrationFetchJobStatus(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob,
qemuDomainJobInfoPtr jobInfo)
qemuMigrationFetchStats(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob,
qemuDomainJobInfoPtr jobInfo)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuMonitorMigrationStats stats;
int rv;
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
return -1;
rv = qemuMonitorGetMigrationStats(priv->mon, &jobInfo->stats);
rv = qemuMonitorGetMigrationStats(priv->mon, &stats);
if (qemuDomainObjExitMonitor(driver, vm) < 0 || rv < 0)
return -1;
qemuMigrationUpdateJobType(jobInfo);
return qemuDomainJobInfoUpdateTime(jobInfo);
jobInfo->stats = stats;
return 0;
}
@ -1415,23 +1417,6 @@ qemuMigrationJobName(virDomainObjPtr vm)
}
static int
qemuMigrationUpdateJobStatus(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuDomainJobInfoPtr jobInfo = priv->job.current;
qemuDomainJobInfo newInfo = *jobInfo;
if (qemuMigrationFetchJobStatus(driver, vm, asyncJob, &newInfo) < 0)
return -1;
*jobInfo = newInfo;
return 0;
}
static int
qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
virDomainObjPtr vm,
@ -1442,11 +1427,12 @@ qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
bool events = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_MIGRATION_EVENT);
if (events)
qemuMigrationUpdateJobType(jobInfo);
else if (qemuMigrationUpdateJobStatus(driver, vm, asyncJob) < 0)
if (!events &&
qemuMigrationFetchStats(driver, vm, asyncJob, jobInfo) < 0)
return -1;
qemuMigrationUpdateJobType(jobInfo);
switch (jobInfo->status) {
case QEMU_DOMAIN_JOB_STATUS_NONE:
virReportError(VIR_ERR_OPERATION_FAILED, _("%s: %s"),
@ -1584,8 +1570,9 @@ qemuMigrationWaitForCompletion(virQEMUDriverPtr driver,
}
if (events)
ignore_value(qemuMigrationUpdateJobStatus(driver, vm, asyncJob));
ignore_value(qemuMigrationFetchStats(driver, vm, asyncJob, jobInfo));
qemuDomainJobInfoUpdateTime(jobInfo);
qemuDomainJobInfoUpdateDowntime(jobInfo);
VIR_FREE(priv->job.completed);
if (VIR_ALLOC(priv->job.completed) == 0)
@ -3176,9 +3163,8 @@ qemuMigrationConfirmPhase(virQEMUDriverPtr driver,
*/
if (virDomainObjGetState(vm, &reason) == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_POSTCOPY &&
qemuMigrationFetchJobStatus(driver, vm,
QEMU_ASYNC_JOB_MIGRATION_OUT,
jobInfo) < 0)
qemuMigrationFetchStats(driver, vm, QEMU_ASYNC_JOB_MIGRATION_OUT,
jobInfo) < 0)
VIR_WARN("Could not refresh migration statistics");
qemuDomainJobInfoUpdateTime(jobInfo);

8
src/qemu/qemu_migration.h
View File

@ -279,10 +279,10 @@ qemuMigrationCancel(virQEMUDriverPtr driver,
virDomainObjPtr vm);
int
qemuMigrationFetchJobStatus(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob,
qemuDomainJobInfoPtr jobInfo);
qemuMigrationFetchStats(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob,
qemuDomainJobInfoPtr jobInfo);
int
qemuMigrationErrorInit(virQEMUDriverPtr driver);