With the blkdeviotune event this patch also fixes a bug that the updated live values weren't saved to the live XML so they won't survive restarting the libvirtd. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- include/libvirt/libvirt.h.in | 56 ++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_driver.c | 54 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 110 insertions(+) diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index 898f8b5..32930e2 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -5262,6 +5262,61 @@ typedef void (*virConnectDomainEventDeviceRemovedCallback)(virConnectPtr conn, */ #define VIR_DOMAIN_EVENT_CPUTUNE_EMULATOR_QUOTA "cputune.emulator_quota" +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_DISK: + * + * Macro represents the name of guest disk for which the values are updated, + * as VIR_TYPED_PARAM_STRING. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_DISK "blkdeviotune.disk" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_BYTES_SEC: + * + * Marco represents the total throughput limit in bytes per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_BYTES_SEC "blkdeviotune.total_bytes_sec" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_BYTES_SEC: + * + * Marco represents the read throughput limit in bytes per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_BYTES_SEC "blkdeviotune.read_bytes_sec" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_BYTES_SEC: + * + * Macro represents the write throughput limit in bytes per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_BYTES_SEC "blkdeviotune.write_bytes_sec" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_IOPS_SEC: + * + * Macro represents the total I/O operations per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_IOPS_SEC "blkdeviotune.total_iops_sec" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_IOPS_SEC: + * + * Macro represents the read I/O operations per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_IOPS_SEC "blkdeviotune.read_iops_sec" + +/** + * VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_IOPS_SEC: + * + * Macro represents the write I/O operations per second, + * as VIR_TYPED_PARAM_ULLONG. + */ +#define VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_IOPS_SEC "blkdeviotune.write_iops_sec" /** * virConnectDomainEventTunableCallback: @@ -5277,6 +5332,7 @@ typedef void (*virConnectDomainEventDeviceRemovedCallback)(virConnectPtr conn, * * Currently supported name spaces: * "cputune.*" + * "blkdeviotune.*" * * The callback signature to use when registering for an event of type * VIR_DOMAIN_EVENT_ID_TUNABLE with virConnectDomainEventRegisterAny() diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index d1a0657..173333a 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -16274,6 +16274,10 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, bool set_iops = false; virQEMUDriverConfigPtr cfg = NULL; virCapsPtr caps = NULL; + virObjectEventPtr event = NULL; + virTypedParameterPtr eventParams = NULL; + int eventNparams = 0; + int eventMaxparams = 0; virCheckFlags(VIR_DOMAIN_AFFECT_LIVE | VIR_DOMAIN_AFFECT_CONFIG, -1); @@ -16315,6 +16319,10 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, &persistentDef) < 0) goto endjob; + if (virTypedParamsAddString(&eventParams, &eventNparams, &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_DISK, disk) < 0) + goto endjob; + for (i = 0; i < nparams; i++) { virTypedParameterPtr param = &params[i]; @@ -16328,26 +16336,56 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC)) { info.total_bytes_sec = param->value.ul; set_bytes = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_BYTES_SEC, + param->value.ul) < 0) + goto endjob; } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC)) { info.read_bytes_sec = param->value.ul; set_bytes = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_BYTES_SEC, + param->value.ul) < 0) + goto endjob; } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC)) { info.write_bytes_sec = param->value.ul; set_bytes = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_BYTES_SEC, + param->value.ul) < 0) + goto endjob; } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC)) { info.total_iops_sec = param->value.ul; set_iops = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_TOTAL_IOPS_SEC, + param->value.ul) < 0) + goto endjob; } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC)) { info.read_iops_sec = param->value.ul; set_iops = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_READ_IOPS_SEC, + param->value.ul) < 0) + goto endjob; } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC)) { info.write_iops_sec = param->value.ul; set_iops = true; + if (virTypedParamsAddULLong(&eventParams, &eventNparams, + &eventMaxparams, + VIR_DOMAIN_EVENT_BLKDEVIOTUNE_WRITE_IOPS_SEC, + param->value.ul) < 0) + goto endjob; } } @@ -16405,6 +16443,20 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, if (ret < 0) goto endjob; vm->def->disks[idx]->blkdeviotune = info; + + ret = virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm); + if (ret < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("Saving live XML config failed")); + goto endjob; + } + + if (eventNparams) { + event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams); + eventNparams = 0; + if (event) + qemuDomainEventQueue(driver, event); + } } if (flags & VIR_DOMAIN_AFFECT_CONFIG) { @@ -16437,6 +16489,8 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, VIR_FREE(device); if (vm) virObjectUnlock(vm); + if (eventNparams) + virTypedParamsFree(eventParams, eventNparams); virObjectUnref(caps); virObjectUnref(cfg); return ret; -- 1.8.5.5