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getstats: split block stats reporting for easier recursion

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In order to report stats on backing chains, we need to separate
the output of stats for one block from how we traverse blocks.

* src/qemu/qemu_driver.c (qemuDomainGetStatsBlock): Split...
(qemuDomainGetStatsOneBlock): ...into new helper.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake 2014-12-06 00:04:12 -07:00
parent 4bffafb2eb
commit c2d380bff8
1 changed files with 80 additions and 51 deletions
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131
src/qemu/qemu_driver.c
View File

@ -18552,6 +18552,82 @@ do { \
goto cleanup; \
} while (0)
static int
qemuDomainGetStatsOneBlock(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
virDomainDiskDefPtr disk,
virStorageSourcePtr src,
size_t block_idx,
bool abbreviated,
virHashTablePtr stats)
{
qemuBlockStats *entry;
int ret = -1;
QEMU_ADD_NAME_PARAM(record, maxparams, "block", "name", block_idx,
disk->dst);
if (virStorageSourceIsLocalStorage(src) && src->path)
QEMU_ADD_NAME_PARAM(record, maxparams, "block", "path",
block_idx, src->path);
if (abbreviated || !disk->info.alias ||
!(entry = virHashLookup(stats, disk->info.alias))) {
if (virStorageSourceIsEmpty(src)) {
ret = 0;
goto cleanup;
}
if (qemuStorageLimitsRefresh(driver, cfg, dom, src) < 0)
goto cleanup;
if (src->allocation)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"allocation", src->allocation);
if (src->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"capacity", src->capacity);
if (src->physical)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"physical", src->physical);
ret = 0;
goto cleanup;
}
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"rd.reqs", entry->rd_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"rd.bytes", entry->rd_bytes);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"rd.times", entry->rd_total_times);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"wr.reqs", entry->wr_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"wr.bytes", entry->wr_bytes);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"wr.times", entry->wr_total_times);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"fl.reqs", entry->flush_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, block_idx,
"fl.times", entry->flush_total_times);
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"allocation", entry->wr_highest_offset);
if (entry->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"capacity", entry->capacity);
if (entry->physical)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"physical", entry->physical);
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
virDomainObjPtr dom,
@ -18590,59 +18666,12 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
QEMU_ADD_COUNT_PARAM(record, maxparams, "block", 0);
for (i = 0; i < dom->def->ndisks; i++) {
qemuBlockStats *entry;
virDomainDiskDefPtr disk = dom->def->disks[i];
QEMU_ADD_NAME_PARAM(record, maxparams, "block", "name", i, disk->dst);
if (virStorageSourceIsLocalStorage(disk->src) && disk->src->path)
QEMU_ADD_NAME_PARAM(record, maxparams, "block", "path",
i, disk->src->path);
if (abbreviated || !disk->info.alias ||
!(entry = virHashLookup(stats, disk->info.alias))) {
if (virStorageSourceIsEmpty(disk->src))
continue;
if (qemuStorageLimitsRefresh(driver, cfg, dom, disk->src) < 0)
goto cleanup;
if (disk->src->allocation)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"allocation", disk->src->allocation);
if (disk->src->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"capacity", disk->src->capacity);
if (disk->src->physical)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"physical", disk->src->physical);
continue;
}
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"rd.reqs", entry->rd_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"rd.bytes", entry->rd_bytes);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"rd.times", entry->rd_total_times);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"wr.reqs", entry->wr_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"wr.bytes", entry->wr_bytes);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"wr.times", entry->wr_total_times);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"fl.reqs", entry->flush_req);
QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i,
"fl.times", entry->flush_total_times);
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"allocation", entry->wr_highest_offset);
if (entry->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"capacity", entry->capacity);
if (entry->physical)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, i,
"physical", entry->physical);
if (qemuDomainGetStatsOneBlock(driver, cfg, dom, record, maxparams,
disk, disk->src, i, abbreviated,
stats) < 0)
goto cleanup;
}
record->params[count_index].value.ui = i;