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qemu: Extract exporting of disk block statistics

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Split out the code which converts the stats gathered in
qemuDomainGetStatsBlock into typed parameters so that it will look
less ugly when extending it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2018-08-02 14:48:26 +02:00
parent 196104b91f
commit 1b3a4c807c
1 changed files with 49 additions and 24 deletions
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73
src/qemu/qemu_driver.c
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@ -20148,6 +20148,51 @@ qemuDomainGetStatsOneBlock(virQEMUDriverPtr driver,
}
static int
qemuDomainGetStatsBlockExportDisk(virDomainDiskDefPtr disk,
virHashTablePtr stats,
virHashTablePtr nodestats,
virDomainStatsRecordPtr records,
int *nrecords,
size_t *recordnr,
bool visitBacking,
virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr dom)
{
char *alias = NULL;
virStorageSourcePtr src = disk->src;
int ret = -1;
while (virStorageSourceIsBacking(src) &&
(src == disk->src || visitBacking)) {
/* alias may be NULL if the VM is not running */
if (disk->info.alias &&
!(alias = qemuDomainStorageAlias(disk->info.alias, src->id)))
goto cleanup;
qemuDomainGetStatsOneBlockRefreshNamed(src, alias, stats, nodestats);
if (qemuDomainGetStatsOneBlock(driver, cfg, dom, records, nrecords,
disk->dst, alias, src, *recordnr,
stats) < 0)
goto cleanup;
VIR_FREE(alias);
(*recordnr)++;
src = src->backingStore;
}
ret = 0;
cleanup:
VIR_FREE(alias);
return ret;
}
static int
qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
virDomainObjPtr dom,
@ -20168,7 +20213,6 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
int count_index = -1;
size_t visited = 0;
bool visitBacking = !!(privflags & QEMU_DOMAIN_STATS_BACKING);
char *alias = NULL;
if (HAVE_JOB(privflags) && virDomainObjIsActive(dom)) {
qemuDomainObjEnterMonitor(driver, dom);
@ -20200,35 +20244,16 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
QEMU_ADD_COUNT_PARAM(record, maxparams, "block", 0);
for (i = 0; i < dom->def->ndisks; i++) {
virDomainDiskDefPtr disk = dom->def->disks[i];
virStorageSourcePtr src = disk->src;
while (virStorageSourceIsBacking(src) &&
(src == disk->src || visitBacking)) {
/* alias may be NULL if the VM is not running */
if (disk->info.alias &&
!(alias = qemuDomainStorageAlias(disk->info.alias, src->id)))
goto cleanup;
qemuDomainGetStatsOneBlockRefreshNamed(src, alias, stats, nodestats);
if (qemuDomainGetStatsOneBlock(driver, cfg, dom, record, maxparams,
disk->dst, alias, src, visited,
stats) < 0)
goto cleanup;
VIR_FREE(alias);
visited++;
src = src->backingStore;
}
if (qemuDomainGetStatsBlockExportDisk(dom->def->disks[i], stats, nodestats,
record, maxparams, &visited,
visitBacking, driver, cfg, dom) < 0)
goto cleanup;
}
record->params[count_index].value.ui = visited;
ret = 0;
cleanup:
VIR_FREE(alias);
virHashFree(stats);
virHashFree(nodestats);
virJSONValueFree(nodedata);