diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 48ba7a9d90..54a065bc58 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -19373,13 +19373,22 @@ qemuDomainGetStatsOneBlock(virQEMUDriverPtr driver, QEMU_ADD_BLOCK_PARAM_UI(record, maxparams, block_idx, "backingIndex", backing_idx); - /* use fallback path if data is not available */ - if (!stats || !alias || !(entry = virHashLookup(stats, alias))) { + /* the VM is offline so we have to go and load the stast from the disk by + * ourselves */ + if (!virDomainObjIsActive(dom)) { ret = qemuDomainGetStatsOneBlockFallback(driver, cfg, dom, record, maxparams, src, block_idx); goto cleanup; } + /* In case where qemu didn't provide the stats we stop here rather than + * trying to refresh the stats from the disk. Inability to provide stats is + * usually caused by blocked storage so this would make libvirtd hang */ + if (!stats || !alias || !(entry = virHashLookup(stats, alias))) { + 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,