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qemu: monitor: Split out code to gather data from 'query-block'

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Extract the code for future reuse.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2018-06-20 10:43:07 +02:00
parent 8d9ca6cdb3
commit dbf990fd31
1 changed files with 32 additions and 21 deletions
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53
src/qemu/qemu_monitor_json.c
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@ -2446,6 +2446,37 @@ qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon,
}
static int
qemuMonitorJSONBlockStatsUpdateCapacityData(virJSONValuePtr image,
const char *name,
virHashTablePtr stats)
{
qemuBlockStatsPtr bstats;
if (!(bstats = virHashLookup(stats, name))) {
if (VIR_ALLOC(bstats) < 0)
return -1;
if (virHashAddEntry(stats, name, bstats) < 0) {
VIR_FREE(bstats);
return -1;
}
}
/* failures can be ignored after this point */
if (virJSONValueObjectGetNumberUlong(image, "virtual-size",
&bstats->capacity) < 0)
return 0;
/* if actual-size is missing, image is not thin provisioned */
if (virJSONValueObjectGetNumberUlong(image, "actual-size",
&bstats->physical) < 0)
bstats->physical = bstats->capacity;
return 0;
}
static int
qemuMonitorJSONBlockStatsUpdateCapacityOne(virJSONValuePtr image,
const char *dev_name,
@ -2453,33 +2484,13 @@ qemuMonitorJSONBlockStatsUpdateCapacityOne(virJSONValuePtr image,
virHashTablePtr stats,
bool backingChain)
{
qemuBlockStatsPtr bstats;
int ret = -1;
char *entry_name = qemuDomainStorageAlias(dev_name, depth);
virJSONValuePtr backing;
if (!(bstats = virHashLookup(stats, entry_name))) {
if (VIR_ALLOC(bstats) < 0)
goto cleanup;
if (virHashAddEntry(stats, entry_name, bstats) < 0) {
VIR_FREE(bstats);
goto cleanup;
}
}
/* After this point, we ignore failures; the stats were
* zero-initialized when created which is a sane fallback. */
ret = 0;
if (virJSONValueObjectGetNumberUlong(image, "virtual-size",
&bstats->capacity) < 0)
if (qemuMonitorJSONBlockStatsUpdateCapacityData(image, entry_name, stats) < 0)
goto cleanup;
/* if actual-size is missing, image is not thin provisioned */
if (virJSONValueObjectGetNumberUlong(image, "actual-size",
&bstats->physical) < 0)
bstats->physical = bstats->capacity;
if (backingChain &&
(backing = virJSONValueObjectGetObject(image, "backing-image"))) {
ret = qemuMonitorJSONBlockStatsUpdateCapacityOne(backing,