diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 6606154eb5812b28cf32e821275c507dcd0a7de9..63fc83f70856e7f410c1018172e1dbedc808a29b 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -17922,24 +17922,18 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver, { size_t i; int ret = -1; - int nstats = dom->def->ndisks; - qemuBlockStatsPtr stats = NULL; + int rc; + virHashTablePtr stats = NULL; qemuDomainObjPrivatePtr priv = dom->privateData; if (!HAVE_JOB(privflags) || !virDomainObjIsActive(dom)) return 0; /* it's ok, just go ahead silently */ - if (VIR_ALLOC_N(stats, nstats) < 0) - return -1; - qemuDomainObjEnterMonitor(driver, dom); - - nstats = qemuMonitorGetAllBlockStatsInfo(priv->mon, NULL, - stats, nstats); - + rc = qemuMonitorGetAllBlockStatsInfo(priv->mon, &stats); qemuDomainObjExitMonitor(driver, dom); - if (nstats < 0) { + if (rc < 0) { virResetLastError(); ret = 0; /* still ok, again go ahead silently */ goto cleanup; @@ -17947,32 +17941,38 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver, QEMU_ADD_COUNT_PARAM(record, maxparams, "block", dom->def->ndisks); - for (i = 0; i < nstats; i++) { - QEMU_ADD_NAME_PARAM(record, maxparams, - "block", i, dom->def->disks[i]->dst); + for (i = 0; i < dom->def->ndisks; i++) { + qemuBlockStats *entry; + virDomainDiskDefPtr disk = dom->def->disks[i]; + + QEMU_ADD_NAME_PARAM(record, maxparams, "block", i, disk->dst); + + if (!disk->info.alias || + !(entry = virHashLookup(stats, disk->info.alias))) + continue; QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "rd.reqs", stats[i].rd_req); + "rd.reqs", entry->rd_req); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "rd.bytes", stats[i].rd_bytes); + "rd.bytes", entry->rd_bytes); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "rd.times", stats[i].rd_total_times); + "rd.times", entry->rd_total_times); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "wr.reqs", stats[i].wr_req); + "wr.reqs", entry->wr_req); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "wr.bytes", stats[i].wr_bytes); + "wr.bytes", entry->wr_bytes); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "wr.times", stats[i].wr_total_times); + "wr.times", entry->wr_total_times); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "fl.reqs", stats[i].flush_req); + "fl.reqs", entry->flush_req); QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, i, - "fl.times", stats[i].flush_total_times); + "fl.times", entry->flush_total_times); } ret = 0; cleanup: - VIR_FREE(stats); + virHashFree(stats); return ret; } diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index c25f00208e0c90c2f8e5f238a3fec24ae900868f..543384dc1c9b34596d0ae07b82bbce4bce60ded8 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -1763,23 +1763,17 @@ int qemuMonitorGetBlockStatsInfo(qemuMonitorPtr mon, */ int qemuMonitorGetAllBlockStatsInfo(qemuMonitorPtr mon, - const char *dev_name, - qemuBlockStatsPtr stats, - int nstats) + virHashTablePtr *ret_stats) { - int ret; - VIR_DEBUG("mon=%p dev=%s", mon, dev_name); + VIR_DEBUG("mon=%p ret_stats=%p", mon, ret_stats); - if (mon->json) { - ret = qemuMonitorJSONGetAllBlockStatsInfo(mon, dev_name, - stats, nstats); - } else { + if (!mon->json) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("unable to query all block stats with this QEMU")); return -1; } - return ret; + return qemuMonitorJSONGetAllBlockStatsInfo(mon, ret_stats); } /* Return 0 and update @nparams with the number of block stats diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 6b91e299085d0e1e2fa3b74cd5251220902f3c99..adf18ab5e0b44c462401981a3c4f96ca770ad912 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -361,10 +361,8 @@ struct _qemuBlockStats { }; int qemuMonitorGetAllBlockStatsInfo(qemuMonitorPtr mon, - const char *dev_name, - qemuBlockStatsPtr stats, - int nstats) - ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3); + virHashTablePtr *ret_stats) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2); int qemuMonitorGetBlockStatsParamsNumber(qemuMonitorPtr mon, int *nparams); diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index a3d7c2c7900fc5c8b4c0c98d23a736508303829d..150ff7639ed31c0c4aa755c9d0c10c0351a2dba7 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -1734,7 +1734,8 @@ int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon, long long *flush_total_times, long long *errs) { - qemuBlockStats stats; + qemuBlockStats *stats; + virHashTablePtr blockstats = NULL; int ret = -1; *rd_req = *rd_bytes = -1; @@ -1749,56 +1750,61 @@ int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon, if (flush_total_times) *flush_total_times = -1; - if (qemuMonitorJSONGetAllBlockStatsInfo(mon, dev_name, &stats, 1) != 1) + if (qemuMonitorJSONGetAllBlockStatsInfo(mon, &blockstats) < 0) goto cleanup; - *rd_req = stats.rd_req; - *rd_bytes = stats.rd_bytes; - *wr_req = stats.wr_req; - *wr_bytes = stats.wr_bytes; + if (!(stats = virHashLookup(blockstats, dev_name))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("cannot find statistics for device '%s'"), dev_name); + goto cleanup; + } + + *rd_req = stats->rd_req; + *rd_bytes = stats->rd_bytes; + *wr_req = stats->wr_req; + *wr_bytes = stats->wr_bytes; *errs = -1; /* QEMU does not have this */ if (rd_total_times) - *rd_total_times = stats.rd_total_times; + *rd_total_times = stats->rd_total_times; if (wr_total_times) - *wr_total_times = stats.wr_total_times; + *wr_total_times = stats->wr_total_times; if (flush_req) - *flush_req = stats.flush_req; + *flush_req = stats->flush_req; if (flush_total_times) - *flush_total_times = stats.flush_total_times; + *flush_total_times = stats->flush_total_times; ret = 0; cleanup: + virHashFree(blockstats); return ret; } int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon, - const char *dev_name, - qemuBlockStatsPtr bstats, - int nstats) + virHashTablePtr *ret_stats) { - int ret, count; + int ret = -1; + int rc; size_t i; - virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-blockstats", - NULL); + virJSONValuePtr cmd; virJSONValuePtr reply = NULL; virJSONValuePtr devices; + qemuBlockStatsPtr bstats = NULL; + virHashTablePtr hash = NULL; - if (!cmd) + if (!(cmd = qemuMonitorJSONMakeCommand("query-blockstats", NULL))) return -1; - if (!bstats || nstats <= 0) - return -1; + if (!(hash = virHashCreate(10, virHashValueFree))) + goto cleanup; - ret = qemuMonitorJSONCommand(mon, cmd, &reply); + if ((rc = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0) + goto cleanup; - if (ret == 0) - ret = qemuMonitorJSONCheckError(cmd, reply); - if (ret < 0) + if (qemuMonitorJSONCheckError(cmd, reply) < 0) goto cleanup; - ret = -1; devices = virJSONValueObjectGet(reply, "return"); if (!devices || devices->type != VIR_JSON_TYPE_ARRAY) { @@ -1807,10 +1813,14 @@ int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon, goto cleanup; } - count = 0; - for (i = 0; i < virJSONValueArraySize(devices) && count < nstats; i++) { + for (i = 0; i < virJSONValueArraySize(devices); i++) { virJSONValuePtr dev = virJSONValueArrayGet(devices, i); virJSONValuePtr stats; + const char *devname; + + if (VIR_ALLOC(bstats) < 0) + goto cleanup; + if (!dev || dev->type != VIR_JSON_TYPE_OBJECT) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("blockstats device entry was not " @@ -1818,29 +1828,16 @@ int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon, goto cleanup; } - /* If dev_name is specified, we are looking for a specific device, - * so we must be stricter. - */ - if (dev_name) { - const char *thisdev = virJSONValueObjectGetString(dev, "device"); - if (!thisdev) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("blockstats device entry was not " - "in expected format")); - goto cleanup; - } - - /* New QEMU has separate names for host & guest side of the disk - * and libvirt gives the host side a 'drive-' prefix. The passed - * in dev_name is the guest side though - */ - if (STRPREFIX(thisdev, QEMU_DRIVE_HOST_PREFIX)) - thisdev += strlen(QEMU_DRIVE_HOST_PREFIX); - - if (STRNEQ(thisdev, dev_name)) - continue; + if (!(devname = virJSONValueObjectGetString(dev, "device"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("blockstats device entry was not " + "in expected format")); + goto cleanup; } + if (STRPREFIX(devname, QEMU_DRIVE_HOST_PREFIX)) + devname += strlen(QEMU_DRIVE_HOST_PREFIX); + if ((stats = virJSONValueObjectGet(dev, "stats")) == NULL || stats->type != VIR_JSON_TYPE_OBJECT) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", @@ -1910,22 +1907,18 @@ int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon, goto cleanup; } - count++; - bstats++; - - if (dev_name && count) - break; - } - - if (dev_name && !count) { - virReportError(VIR_ERR_INTERNAL_ERROR, - _("cannot find statistics for device '%s'"), dev_name); - goto cleanup; + if (virHashAddEntry(hash, devname, bstats) < 0) + goto cleanup; + bstats = NULL; } - ret = count; + *ret_stats = hash; + hash = NULL; + ret = 0; cleanup: + VIR_FREE(bstats); + virHashFree(hash); virJSONValueFree(cmd); virJSONValueFree(reply); return ret; diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h index d366179ea8bcb3a7fd55995002d270651e57c0e0..ef9b552565a5d0325d972c15a61e3fa4b683f2a1 100644 --- a/src/qemu/qemu_monitor_json.h +++ b/src/qemu/qemu_monitor_json.h @@ -80,9 +80,7 @@ int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon, long long *flush_total_times, long long *errs); int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon, - const char *dev_name, - qemuBlockStatsPtr stats, - int nstats); + virHashTablePtr *ret_stats); int qemuMonitorJSONGetBlockStatsParamsNumber(qemuMonitorPtr mon, int *nparams); int qemuMonitorJSONGetBlockExtent(qemuMonitorPtr mon,