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qemu: prefer .requiredCaps for VIR_DOMAIN_STATS_IOTHREAD

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Since f29d7c3e69 we have an option for checking capabilities
required for given type of statistics upfront, instead of the
callback. Switch qemuDomainGetStatsIOThread() callback to the new
style.

This will now error out properly if user requests IOTHREAD stats
forcibly (via VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS
flag) but QEMU doesn't support IOThreads. Previously, this was
silently ignored.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2021-11-11 11:20:29 +01:00
parent 9f56686bf0
commit 2c6b8cb507
1 changed files with 7 additions and 5 deletions
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12
src/qemu/qemu_driver.c
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@ -18513,7 +18513,6 @@ qemuDomainGetStatsIOThread(virQEMUDriver *driver,
virTypedParamList *params,
unsigned int privflags)
{
qemuDomainObjPrivate *priv = dom->privateData;
size_t i;
qemuMonitorIOThreadInfo **iothreads = NULL;
int niothreads = 0;
@ -18522,9 +18521,6 @@ qemuDomainGetStatsIOThread(virQEMUDriver *driver,
if (!HAVE_JOB(privflags) || !virDomainObjIsActive(dom))
return 0;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD))
return 0;
if (qemuDomainGetIOThreadsMon(driver, dom, &iothreads, &niothreads) < 0)
return -1;
@ -18665,6 +18661,12 @@ struct qemuDomainGetStatsWorker {
virQEMUCapsFlags *requiredCaps;
};
static virQEMUCapsFlags queryIOThreadRequired[] = {
QEMU_CAPS_OBJECT_IOTHREAD,
QEMU_CAPS_LAST
};
static virQEMUCapsFlags queryDirtyRateRequired[] = {
QEMU_CAPS_QUERY_DIRTY_RATE,
QEMU_CAPS_LAST
@ -18678,7 +18680,7 @@ static struct qemuDomainGetStatsWorker qemuDomainGetStatsWorkers[] = {
{ qemuDomainGetStatsInterface, VIR_DOMAIN_STATS_INTERFACE, false, NULL },
{ qemuDomainGetStatsBlock, VIR_DOMAIN_STATS_BLOCK, true, NULL },
{ qemuDomainGetStatsPerf, VIR_DOMAIN_STATS_PERF, false, NULL },
{ qemuDomainGetStatsIOThread, VIR_DOMAIN_STATS_IOTHREAD, true, NULL },
{ qemuDomainGetStatsIOThread, VIR_DOMAIN_STATS_IOTHREAD, true, queryIOThreadRequired },
{ qemuDomainGetStatsMemory, VIR_DOMAIN_STATS_MEMORY, false, NULL },
{ qemuDomainGetStatsDirtyRate, VIR_DOMAIN_STATS_DIRTYRATE, true, queryDirtyRateRequired },
{ NULL, 0, false, NULL }