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qemu: Make updating stats in qemuMigrationCheckJobStatus optional

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With new QEMU which supports migration events,
qemuMigrationCheckJobStatus needs to explicitly query QEMU for migration
statistics once migration is completed to make sure the caller sees
up-to-date statistics with both old and new QEMU. However, some callers
are not interested in the statistics at all and once we start waiting
for a completed migration on the destination host too, checking the
statistics would even fail. Let's push the decision whether to update
the statistics or not to the caller.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark 2015-10-05 14:32:58 +02:00
parent 2af983f4c4
commit 829c62b7a5
1 changed files with 9 additions and 5 deletions
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14
src/qemu/qemu_migration.c
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@ -2574,7 +2574,8 @@ qemuMigrationUpdateJobStatus(virQEMUDriverPtr driver,
static int
qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob)
qemuDomainAsyncJob asyncJob,
bool updateJobStats)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuDomainJobInfoPtr jobInfo = priv->job.current;
@ -2604,7 +2605,7 @@ qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
case VIR_DOMAIN_JOB_COMPLETED:
/* Fetch statistics of a completed migration */
if (events &&
if (events && updateJobStats &&
qemuMigrationUpdateJobStatus(driver, vm, asyncJob) < 0)
return -1;
break;
@ -2621,6 +2622,7 @@ qemuMigrationCheckJobStatus(virQEMUDriverPtr driver,
enum qemuMigrationCompletedFlags {
QEMU_MIGRATION_COMPLETED_ABORT_ON_ERROR = (1 << 0),
QEMU_MIGRATION_COMPLETED_CHECK_STORAGE = (1 << 1),
QEMU_MIGRATION_COMPLETED_UPDATE_STATS = (1 << 2),
};
/**
@ -2639,8 +2641,9 @@ qemuMigrationCompleted(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuDomainJobInfoPtr jobInfo = priv->job.current;
int pauseReason;
bool updateStats = !!(flags & QEMU_MIGRATION_COMPLETED_UPDATE_STATS);
if (qemuMigrationCheckJobStatus(driver, vm, asyncJob) < 0)
if (qemuMigrationCheckJobStatus(driver, vm, asyncJob, updateStats) < 0)
goto error;
if (flags & QEMU_MIGRATION_COMPLETED_CHECK_STORAGE &&
@ -2694,7 +2697,7 @@ qemuMigrationWaitForCompletion(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuDomainJobInfoPtr jobInfo = priv->job.current;
bool events = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_MIGRATION_EVENT);
unsigned int flags = 0;
unsigned int flags = QEMU_MIGRATION_COMPLETED_UPDATE_STATS;
int rv;
if (abort_on_error)
@ -4358,7 +4361,8 @@ qemuMigrationRun(virQEMUDriverPtr driver,
* connection from qemu which may never be initiated.
*/
if (qemuMigrationCheckJobStatus(driver, vm,
QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
QEMU_ASYNC_JOB_MIGRATION_OUT,
false) < 0)
goto cancel;
while ((fd = accept(spec->dest.unix_socket.sock, NULL, NULL)) < 0) {