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qemuDomainGetStatsBlock: Remove pre-blockdev code paths

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This function and its callees were a bit more entangled so remove the
pre-blockdev code separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2022-07-20 11:19:05 +02:00
parent 071a4c8ba7
commit 6b90c5a59b
1 changed files with 12 additions and 68 deletions
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78
src/qemu/qemu_driver.c
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@ -18172,42 +18172,6 @@ qemuDomainGetStatsOneBlockFallback(virQEMUDriver *driver,
}
/**
* qemuDomainGetStatsOneBlockRefreshNamed:
* @src: disk source structure
* @alias: disk alias
* @stats: hash table containing stats for all disks
* @nodedata: reply containing 'query-named-block-nodes' data
*
* Refresh disk block stats data (qemuBlockStats *) which are present only
* in the reply of 'query-named-block-nodes' in cases when the data was gathered
* by using query-block originally.
*/
static void
qemuDomainGetStatsOneBlockRefreshNamed(virStorageSource *src,
const char *alias,
GHashTable *stats,
GHashTable *nodedata)
{
qemuBlockStats *entry;
virJSONValue *data;
unsigned long long tmp;
if (!nodedata || !src->nodestorage)
return;
if (!(entry = virHashLookup(stats, alias)))
return;
if (!(data = virHashLookup(nodedata, src->nodestorage)))
return;
if (virJSONValueObjectGetNumberUlong(data, "write_threshold", &tmp) == 0)
entry->write_threshold = tmp;
}
static int
qemuDomainGetStatsOneBlock(virQEMUDriver *driver,
virQEMUDriverConfig *cfg,
@ -18330,20 +18294,15 @@ qemuDomainGetStatsBlockExportHeader(virDomainDiskDef *disk,
static int
qemuDomainGetStatsBlockExportDisk(virDomainDiskDef *disk,
GHashTable *stats,
GHashTable *nodestats,
virTypedParamList *params,
size_t *recordnr,
bool visitBacking,
virQEMUDriver *driver,
virQEMUDriverConfig *cfg,
virDomainObj *dom,
bool blockdev)
virDomainObj *dom)
{
virStorageSource *n;
const char *frontendalias;
const char *backendalias;
const char *backendstoragealias;
/*
* This helps to keep logs clean from error messages on getting stats
@ -18379,9 +18338,10 @@ qemuDomainGetStatsBlockExportDisk(virDomainDiskDef *disk,
for (n = disk->src; virStorageSourceIsBacking(n); n = n->backingStore) {
g_autofree char *alias = NULL;
const char *frontendalias;
const char *backendalias;
const char *backendstoragealias;
/* for 'sd' disks we won't be displaying stats for the backing chain
* as we don't update the stats correctly */
if (QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName) {
frontendalias = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
backendalias = n->nodeformat;
@ -18392,7 +18352,8 @@ qemuDomainGetStatsBlockExportDisk(virDomainDiskDef *disk,
!(alias = qemuDomainStorageAlias(disk->info.alias, n->id)))
return -1;
qemuDomainGetStatsOneBlockRefreshNamed(n, alias, stats, nodestats);
/* for 'sd' disks we won't be displaying stats for the backing chain
* as we don't update the stats correctly */
frontendalias = alias;
backendalias = alias;
@ -18428,7 +18389,7 @@ qemuDomainGetStatsBlockExportDisk(virDomainDiskDef *disk,
/* in blockdev mode where we can properly and uniquely identify images we
* can also report stats for the mirror target or the scratch image or target
* of a backup operation */
if (visitBacking && blockdev) {
if (visitBacking) {
qemuDomainObjPrivate *priv = dom->privateData;
if (disk->mirror &&
@ -18498,13 +18459,8 @@ qemuDomainGetStatsBlock(virQEMUDriver *driver,
size_t i;
int rc;
g_autoptr(GHashTable) stats = NULL;
g_autoptr(GHashTable) nodestats = NULL;
g_autoptr(virJSONValue) nodedata = NULL;
qemuDomainObjPrivate *priv = dom->privateData;
g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
bool blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
bool fetchnodedata = virQEMUCapsGet(priv->qemuCaps,
QEMU_CAPS_QUERY_NAMED_BLOCK_NODES) && !blockdev;
int count_index = -1;
size_t visited = 0;
bool visitBacking = !!(privflags & QEMU_DOMAIN_STATS_BACKING);
@ -18514,27 +18470,16 @@ qemuDomainGetStatsBlock(virQEMUDriver *driver,
rc = qemuMonitorGetAllBlockStatsInfo(priv->mon, &stats);
if (rc >= 0) {
if (blockdev)
if (rc >= 0)
rc = qemuMonitorBlockStatsUpdateCapacityBlockdev(priv->mon, stats);
else
ignore_value(qemuMonitorBlockStatsUpdateCapacity(priv->mon, stats));
}
if (fetchnodedata)
nodedata = qemuMonitorQueryNamedBlockNodes(priv->mon);
qemuDomainObjExitMonitor(dom);
/* failure to retrieve stats is fine at this point */
if (rc < 0 || (fetchnodedata && !nodedata))
if (rc < 0)
virResetLastError();
}
if (nodedata &&
!(nodestats = qemuBlockGetNodeData(nodedata)))
return -1;
/* When listing backing chains, it's easier to fix up the count
* after the iteration than it is to iterate twice; but we still
* want count listed first. */
@ -18543,10 +18488,9 @@ qemuDomainGetStatsBlock(virQEMUDriver *driver,
return -1;
for (i = 0; i < dom->def->ndisks; i++) {
if (qemuDomainGetStatsBlockExportDisk(dom->def->disks[i], stats, nodestats,
if (qemuDomainGetStatsBlockExportDisk(dom->def->disks[i], stats,
params, &visited,
visitBacking, driver, cfg, dom,
blockdev) < 0)
visitBacking, driver, cfg, dom) < 0)
return -1;
}