7:15 p.m.
Change the code so that it queries the monitor when the VM is alive.
---
src/qemu/qemu_driver.c | 90 +++++++++++++++++++++++++++++---------------------
1 file changed, 53 insertions(+), 37 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 004da7e..3da941e 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -11800,10 +11800,12 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
- virDomainDiskDefPtr disk = NULL;
- virStorageSourcePtr src;
- bool activeFail = false;
+ virDomainDiskDefPtr disk;
virQEMUDriverConfigPtr cfg = NULL;
+ int rc;
+ virHashTablePtr stats = NULL;
+ qemuBlockStats *entry;
+ char *alias;
virCheckFlags(0, -1);
@@ -11815,11 +11817,6 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
if (virDomainGetBlockInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
- /* Technically, we only need a job if we are going to query the
- * monitor, which is only for active domains that are using
- * non-raw block devices. But it is easier to share code if we
- * always grab a job; furthermore, grabbing the job ensures that
- * hot-plug won't change disk behind our backs. */
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
@@ -11829,53 +11826,72 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
goto endjob;
}
- src = disk->src;
- if (virStorageSourceIsEmpty(src)) {
+ if (virStorageSourceIsEmpty(disk->src)) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk '%s' does not currently have a source
assigned"),
path);
goto endjob;
}
- if ((ret = qemuStorageLimitsRefresh(driver, cfg, vm, src)) < 0)
+ /* for inactive domains we have to peek into the files */
+ if (!virDomainObjIsActive(vm)) {
+ if ((qemuStorageLimitsRefresh(driver, cfg, vm, disk->src)) < 0)
+ goto endjob;
+
+ info->capacity = disk->src->capacity;
+ info->allocation = disk->src->allocation;
+ info->physical = disk->src->physical;
+
+ ret = 0;
+ goto endjob;
+ }
+
+ if (!disk->info.alias ||
+ !(alias = qemuDomainStorageAlias(disk->info.alias, 0))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("missing disk device alias name for %s"),
disk->dst);
goto endjob;
+ }
- if (!src->allocation) {
- qemuDomainObjPrivatePtr priv = vm->privateData;
+ qemuDomainObjEnterMonitor(driver, vm);
+ rc = qemuMonitorGetAllBlockStatsInfo(qemuDomainGetMonitor(vm),
+ &stats, false);
+ if (rc >= 0)
+ rc = qemuMonitorBlockStatsUpdateCapacity(qemuDomainGetMonitor(vm),
+ stats, false);
- /* If the guest is not running, then success/failure return
- * depends on whether domain is persistent
- */
- if (!virDomainObjIsActive(vm)) {
- activeFail = true;
+ if (qemuDomainObjExitMonitor(driver, vm) < 0 || rc < 0)
+ goto endjob;
+
+ if (!(entry = virHashLookup(stats, alias))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("failed to gather stats for disk '%s'"),
disk->dst);
+ goto endjob;
+ }
+
+ if (!entry->wr_highest_offset_valid) {
+ if (virStorageSourceGetActualType(disk->src) == VIR_STORAGE_TYPE_BLOCK
&&
+ disk->src->format != VIR_STORAGE_FILE_RAW) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("failed to query the maximum written offset of "
+ "block device '%s'"), disk->dst);
goto endjob;
}
- qemuDomainObjEnterMonitor(driver, vm);
- ret = qemuMonitorGetBlockExtent(priv->mon,
- disk->info.alias,
- &src->allocation);
- if (qemuDomainObjExitMonitor(driver, vm) < 0)
- ret = -1;
+ info->allocation = entry->physical;
+ } else {
+ info->allocation = entry->wr_highest_offset;
}
- if (ret == 0) {
- info->capacity = src->capacity;
- info->allocation = src->allocation;
- info->physical = src->physical;
- }
+ info->capacity = entry->capacity;
+ info->physical = entry->physical;
+
+ ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
- /* If we failed to get data from a domain because it's inactive and
- * it's not a persistent domain, then force failure.
- */
- if (activeFail && vm && !vm->persistent) {
- virReportError(VIR_ERR_OPERATION_INVALID, "%s",
- _("domain is not running"));
- ret = -1;
- }
+ virHashFree(stats);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
--
2.4.1