[libvirt] [PATCH 3/8] Implement virDomain{Set, Get}BlockIoTune for the qemu driver
Lei Li
lilei at linux.vnet.ibm.com
Tue Nov 15 09:02:45 UTC 2011
Implement the block I/O throttle setting and getting support to qemu
driver.
Signed-off-by: Lei Li <lilei at linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy at linux.vnet.ibm.com>
---
src/qemu/qemu_driver.c | 342 ++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_monitor.c | 37 +++++
src/qemu/qemu_monitor.h | 22 +++
src/qemu/qemu_monitor_json.c | 186 +++++++++++++++++++++++
src/qemu/qemu_monitor_json.h | 10 ++
src/qemu/qemu_monitor_text.c | 165 ++++++++++++++++++++
src/qemu/qemu_monitor_text.h | 10 ++
7 files changed, 772 insertions(+), 0 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 5f4a18d..0a4eaa9 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -94,6 +94,8 @@
#define QEMU_NB_MEM_PARAM 3
+#define QEMU_NB_BLKIOTHROTTLE_PARAM 6
+
#if HAVE_LINUX_KVM_H
# include <linux/kvm.h>
#endif
@@ -10775,6 +10777,344 @@ cleanup:
return ret;
}
+static int
+qemuDomainSetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virTypedParameterPtr params,
+ int nparams,
+ unsigned int flags)
+{
+ struct qemud_driver *driver = dom->conn->privateData;
+ virDomainObjPtr vm = NULL;
+ qemuDomainObjPrivatePtr priv;
+ virDomainDefPtr persistentDef = NULL;
+ virDomainBlockIoTuneInfo info;
+ char uuidstr[VIR_UUID_STRING_BUFLEN];
+ const char *device = NULL;
+ int ret = -1;
+ int i;
+ bool isActive;
+
+ virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
+ VIR_DOMAIN_AFFECT_CONFIG, -1);
+
+ memset(&info, 0, sizeof(info));
+
+ qemuDriverLock(driver);
+ virUUIDFormat(dom->uuid, uuidstr);
+ vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+ if (!vm) {
+ qemuReportError(VIR_ERR_NO_DOMAIN,
+ _("no domain with matching uuid '%s'"), uuidstr);
+ goto cleanup;
+ }
+
+ device = qemuDiskPathToAlias(vm, disk);
+ if (!device) {
+ goto cleanup;
+ }
+
+ if (qemuDomainObjBeginJobWithDriver(driver, vm, QEMU_JOB_MODIFY) < 0)
+ goto cleanup;
+
+ isActive = virDomainObjIsActive(vm);
+
+ if (flags == VIR_DOMAIN_AFFECT_CURRENT) {
+ if (isActive)
+ flags = VIR_DOMAIN_AFFECT_LIVE;
+ else
+ flags = VIR_DOMAIN_AFFECT_CONFIG;
+ }
+
+ if (!isActive && (flags & VIR_DOMAIN_AFFECT_LIVE)) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("domain is not running"));
+ goto endjob;
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
+ if (!vm->persistent) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("cannot change persistent config of a transient domain"));
+ goto endjob;
+ }
+ if (!(persistentDef = virDomainObjGetPersistentDef(driver->caps, vm)))
+ goto endjob;
+ }
+
+ for (i = 0; i < nparams; i++) {
+ virTypedParameterPtr param = ¶ms[i];
+
+ if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC)) {
+
+ info.total_bytes_sec = params[i].value.ul;
+ } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC)) {
+ info.read_bytes_sec = params[i].value.ul;
+ } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC)) {
+ info.write_bytes_sec = params[i].value.ul;
+ } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC)) {
+ info.total_iops_sec = params[i].value.ul;
+ } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC)) {
+ info.read_iops_sec = params[i].value.ul;
+ } else if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC)) {
+ info.write_iops_sec = params[i].value.ul;
+ } else {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("Unrecognized parameter"));
+ goto endjob;
+ }
+ }
+
+ if ((info.total_bytes_sec && info.read_bytes_sec) ||
+ (info.total_bytes_sec && info.write_bytes_sec)) {
+ qemuReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("total and read/write of bytes_sec cannot be set at the same time"));
+ goto endjob;
+ }
+
+ if ((info.total_iops_sec && info.read_iops_sec) ||
+ (info.total_iops_sec && info.write_iops_sec)) {
+ qemuReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("total and read/write of iops_sec cannot be set at the same time"));
+ goto endjob;
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_LIVE) {
+ priv = vm->privateData;
+ qemuDomainObjEnterMonitorWithDriver(driver, vm);
+ ret = qemuMonitorSetBlockIoThrottle(priv->mon, device, &info, 1);
+ qemuDomainObjExitMonitorWithDriver(driver, vm);
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
+ sa_assert(persistentDef);
+ int idx = virDomainDiskIndexByName(vm->def, disk, true);
+ if (i < 0)
+ goto endjob;
+ persistentDef->disks[idx]->blkdeviotune.total_bytes_sec = info.total_bytes_sec;
+ persistentDef->disks[idx]->blkdeviotune.read_bytes_sec = info.read_bytes_sec;
+ persistentDef->disks[idx]->blkdeviotune.write_bytes_sec = info.write_bytes_sec;
+ persistentDef->disks[idx]->blkdeviotune.total_iops_sec = info.total_iops_sec;
+ persistentDef->disks[idx]->blkdeviotune.read_iops_sec = info.read_iops_sec;
+ persistentDef->disks[idx]->blkdeviotune.write_iops_sec = info.write_iops_sec;
+ persistentDef->disks[idx]->blkdeviotune.mark = 1;
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
+ ret = virDomainSaveConfig(driver->configDir, persistentDef);
+ if (ret < 0) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("Write to config file failed"));
+ goto endjob;
+ }
+ }
+
+endjob:
+ if (qemuDomainObjEndJob(driver, vm) == 0)
+ vm = NULL;
+
+cleanup:
+ VIR_FREE(device);
+ if (vm)
+ virDomainObjUnlock(vm);
+ qemuDriverUnlock(driver);
+ return ret;
+}
+
+static int
+qemuDomainGetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virTypedParameterPtr params,
+ int *nparams,
+ unsigned int flags)
+{
+ struct qemud_driver *driver = dom->conn->privateData;
+ virDomainObjPtr vm = NULL;
+ qemuDomainObjPrivatePtr priv;
+ virDomainDefPtr persistentDef = NULL;
+ virDomainBlockIoTuneInfo reply;
+ char uuidstr[VIR_UUID_STRING_BUFLEN];
+ const char *device = NULL;
+ int ret = -1;
+ int i;
+ bool isActive;
+
+ virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
+ VIR_DOMAIN_AFFECT_CONFIG |
+ VIR_TYPED_PARAM_STRING_OKAY, -1);
+
+ /* We don't return strings, and thus trivially support this flag. */
+ flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
+
+ qemuDriverLock(driver);
+ virUUIDFormat(dom->uuid, uuidstr);
+ vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+ if (!vm) {
+ qemuReportError(VIR_ERR_NO_DOMAIN,
+ _("no domain with matching uuid '%s'"), uuidstr);
+ goto cleanup;
+ }
+
+ device = qemuDiskPathToAlias(vm, disk);
+
+ if (!device) {
+ goto cleanup;
+ }
+
+ if (qemuDomainObjBeginJobWithDriver(driver, vm, QEMU_JOB_MODIFY) < 0)
+ goto cleanup;
+
+ isActive = virDomainObjIsActive(vm);
+
+ if (flags == VIR_DOMAIN_AFFECT_CURRENT) {
+ if (isActive)
+ flags = VIR_DOMAIN_AFFECT_LIVE;
+ else
+ flags = VIR_DOMAIN_AFFECT_CONFIG;
+ }
+
+ if ((flags & VIR_DOMAIN_AFFECT_LIVE) && (flags & VIR_DOMAIN_AFFECT_CONFIG)) {
+ qemuReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("Cannot query with --live and --config together"));
+ goto endjob;
+ }
+
+ if (!isActive && (flags & VIR_DOMAIN_AFFECT_LIVE)) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("domain is not running"));
+ goto endjob;
+ }
+
+ if ((*nparams) == 0) {
+ /* Current number of parameters supported by QEMU Block I/O Throttling */
+ *nparams = QEMU_NB_BLKIOTHROTTLE_PARAM;
+ ret = 0;
+ goto endjob;
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_LIVE) {
+ priv = vm->privateData;
+ qemuDomainObjEnterMonitorWithDriver(driver, vm);
+ ret = qemuMonitorGetBlockIoThrottle(priv->mon, device, &reply, 0);
+ qemuDomainObjExitMonitorWithDriver(driver, vm);
+ }
+
+ if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
+ if (!vm->persistent) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("domain is transient"));
+ goto endjob;
+ }
+ if (!(persistentDef = virDomainObjGetPersistentDef(driver->caps, vm)))
+ goto endjob;
+
+ sa_assert(persistentDef);
+ int idx = virDomainDiskIndexByName(vm->def, disk, true);
+ if (idx < 0)
+ goto endjob;
+ reply.total_bytes_sec = persistentDef->disks[idx]->blkdeviotune.total_bytes_sec;
+ reply.read_bytes_sec = persistentDef->disks[idx]->blkdeviotune.read_bytes_sec;
+ reply.write_bytes_sec = persistentDef->disks[idx]->blkdeviotune.write_bytes_sec;
+ reply.total_iops_sec = persistentDef->disks[idx]->blkdeviotune.total_iops_sec;
+ reply.read_iops_sec = persistentDef->disks[idx]->blkdeviotune.read_iops_sec;
+ reply.write_iops_sec = persistentDef->disks[idx]->blkdeviotune.write_iops_sec;
+ ret = 0;
+ }
+
+ if ((ret != 0) && ((*nparams) < QEMU_NB_BLKIOTHROTTLE_PARAM)) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("Cannot get block I/O parameters"));
+ goto endjob;
+ }
+
+ for (i = 0; i < QEMU_NB_BLKIOTHROTTLE_PARAM; i++) {
+ virTypedParameterPtr param = ¶ms[i];
+ param->value.ul = 0;
+ param->type = VIR_TYPED_PARAM_ULLONG;
+
+ switch(i) {
+ case 0:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.total_bytes_sec;
+ break;
+
+ case 1:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.read_bytes_sec;
+ break;
+
+ case 2:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.write_bytes_sec;
+ break;
+
+ case 3:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.total_iops_sec;
+ break;
+
+ case 4:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.read_iops_sec;
+ break;
+
+ case 5:
+ if (virStrcpyStatic(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Field name '%s' too long"),
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC);
+ goto endjob;
+ }
+ param->value.ul = reply.write_iops_sec;
+ break;
+ default:
+ break;
+ }
+ }
+ ret = 0;
+
+endjob:
+ if (qemuDomainObjEndJob(driver, vm) == 0)
+ vm = NULL;
+
+cleanup:
+ VIR_FREE(device);
+ if (vm)
+ virDomainObjUnlock(vm);
+ qemuDriverUnlock(driver);
+ return ret;
+}
static virDriver qemuDriver = {
.no = VIR_DRV_QEMU,
@@ -10919,6 +11259,8 @@ static virDriver qemuDriver = {
.domainGetBlockJobInfo = qemuDomainGetBlockJobInfo, /* 0.9.4 */
.domainBlockJobSetSpeed = qemuDomainBlockJobSetSpeed, /* 0.9.4 */
.domainBlockPull = qemuDomainBlockPull, /* 0.9.4 */
+ .domainSetBlockIoTune = qemuDomainSetBlockIoTune, /* 0.9.8 */
+ .domainGetBlockIoTune = qemuDomainGetBlockIoTune, /* 0.9.8 */
};
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 73e5ea9..c0b711f 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -2567,6 +2567,43 @@ int qemuMonitorBlockJob(qemuMonitorPtr mon,
return ret;
}
+int qemuMonitorSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags)
+{
+ int ret;
+
+ VIR_DEBUG("mon=%p, device=%p, info=%p, flags=%x",
+ mon, device, info, flags);
+
+ if (mon->json) {
+ ret = qemuMonitorJSONSetBlockIoThrottle(mon, device, info, flags);
+ } else {
+ ret = qemuMonitorTextSetBlockIoThrottle(mon, device, info, flags);
+ }
+ return ret;
+}
+
+int qemuMonitorGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags)
+{
+ int ret;
+
+ VIR_DEBUG("mon=%p, device=%p, reply=%p, flags=%x",
+ mon, device, reply, flags);
+
+ if (mon->json) {
+ ret = qemuMonitorJSONGetBlockIoThrottle(mon, device, reply, flags);
+ } else {
+ ret = qemuMonitorTextGetBlockIoThrottle(mon, device, reply, flags);
+ }
+ return ret;
+}
+
+
int qemuMonitorVMStatusToPausedReason(const char *status)
{
int st;
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 883e0aa..48c6db0 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -521,6 +521,28 @@ int qemuMonitorOpenGraphics(qemuMonitorPtr mon,
const char *fdname,
bool skipauth);
+
+typedef struct _virDomainBlockIoTuneInfo virDomainBlockIoTuneInfo;
+struct _virDomainBlockIoTuneInfo {
+ unsigned long long total_bytes_sec;
+ unsigned long long read_bytes_sec;
+ unsigned long long write_bytes_sec;
+ unsigned long long total_iops_sec;
+ unsigned long long read_iops_sec;
+ unsigned long long write_iops_sec;
+};
+typedef virDomainBlockIoTuneInfo *virDomainBlockIoTuneInfoPtr;
+
+int qemuMonitorSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags);
+
+int qemuMonitorGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags);
+
/**
* When running two dd process and using <> redirection, we need a
* shell that will not truncate files. These two strings serve that
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 56a62db..925031e 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -3276,3 +3276,189 @@ int qemuMonitorJSONOpenGraphics(qemuMonitorPtr mon,
virJSONValueFree(reply);
return ret;
}
+
+
+static int
+qemuMonitorJSONBlockIoThrottleInfo(virJSONValuePtr result,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply)
+{
+ virJSONValuePtr io_throttle;
+ int ret = -1;
+ int i;
+ int found = 0;
+
+ io_throttle = virJSONValueObjectGet(result, "return");
+
+ if (!io_throttle || io_throttle->type != VIR_JSON_TYPE_ARRAY) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _(" block_io_throttle reply was missing device list "));
+ goto cleanup;
+ }
+
+ for (i = 0; i < virJSONValueArraySize(io_throttle); i++) {
+ virJSONValuePtr temp_dev = virJSONValueArrayGet(io_throttle, i);
+ virJSONValuePtr inserted;
+ const char *current_dev;
+
+ if (!temp_dev || temp_dev->type != VIR_JSON_TYPE_OBJECT) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("block io throttle device entry was not in expected format"));
+ goto cleanup;
+ }
+
+ if ((current_dev = virJSONValueObjectGetString(temp_dev, "device")) == NULL) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("block io throttle device entry was not in expected format"));
+ goto cleanup;
+ }
+
+ if(STRPREFIX(current_dev, QEMU_DRIVE_HOST_PREFIX))
+ current_dev += strlen(QEMU_DRIVE_HOST_PREFIX);
+
+ if (STREQ(current_dev, device))
+ continue;
+
+ found = 1;
+ if ((inserted = virJSONValueObjectGet(temp_dev, "inserted")) == NULL ||
+ inserted->type != VIR_JSON_TYPE_OBJECT) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("block io throttle inserted entry was not in expected format"));
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "bps", &reply->total_bytes_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "total_bytes_sec");
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "bps_rd", &reply->read_bytes_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "read_bytes_sec");
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "bps_wr", &reply->write_bytes_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "write_bytes_sec");
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "iops", &reply->total_iops_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "total_iops_sec");
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "iops_rd", &reply->read_iops_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "read_iops_sec");
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUlong(inserted, "iops_wr", &reply->write_iops_sec) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot read %s"), "write_iops_sec");
+ goto cleanup;
+ }
+ break;
+ }
+
+ if (!found) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("cannot found info for device '%s'"),
+ device);
+ goto cleanup;
+ }
+ ret = 0;
+
+cleanup:
+ return ret;
+}
+
+int qemuMonitorJSONSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags)
+{
+ int ret = -1;
+ virJSONValuePtr cmd = NULL;
+ virJSONValuePtr result = NULL;
+
+ if (flags) {
+ cmd = qemuMonitorJSONMakeCommand("block_set_io_throttle",
+ "s:device", device,
+ "U:bps", info->total_bytes_sec,
+ "U:bps_rd", info->read_bytes_sec,
+ "U:bps_wr", info->write_bytes_sec,
+ "U:iops", info->total_iops_sec,
+ "U:iops_rd", info->read_iops_sec,
+ "U:iops_wr", info->write_iops_sec,
+ NULL);
+ }
+
+ if (!cmd)
+ return -1;
+
+ ret = qemuMonitorJSONCommand(mon, cmd, &result);
+
+ if (ret == 0 && virJSONValueObjectHasKey(result, "error")) {
+ if (qemuMonitorJSONHasError(result, "DeviceNotActive"))
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("No active operation on device: %s"), device);
+ else if (qemuMonitorJSONHasError(result, "NotSupported"))
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("Operation is not supported for device: %s"), device);
+ else
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unexpected error"));
+ ret = -1;
+ }
+
+ virJSONValueFree(cmd);
+ virJSONValueFree(result);
+ return ret;
+}
+
+int qemuMonitorJSONGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags)
+{
+ int ret = -1;
+ virJSONValuePtr cmd = NULL;
+ virJSONValuePtr result = NULL;
+
+ if (!flags) {
+ cmd = qemuMonitorJSONMakeCommand("query-block",
+ NULL);
+ }
+
+ if (!cmd) {
+ return -1;
+ }
+
+ ret = qemuMonitorJSONCommand(mon, cmd, &result);
+
+ if (ret == 0 && virJSONValueObjectHasKey(result, "error")) {
+ if (qemuMonitorJSONHasError(result, "DeviceNotActive"))
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("No active operation on device: %s"), device);
+ else if (qemuMonitorJSONHasError(result, "NotSupported"))
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("Operation is not supported for device: %s"), device);
+ else
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unexpected error"));
+ ret = -1;
+ }
+
+ if (ret == 0 && !flags)
+ ret = qemuMonitorJSONBlockIoThrottleInfo(result, device, reply);
+
+ virJSONValueFree(cmd);
+ virJSONValueFree(result);
+ return ret;
+}
+
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index f10d7d2..bf12dc5 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -255,4 +255,14 @@ int qemuMonitorJSONOpenGraphics(qemuMonitorPtr mon,
const char *fdname,
bool skipauth);
+int qemuMonitorJSONSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags);
+
+int qemuMonitorJSONGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags);
+
#endif /* QEMU_MONITOR_JSON_H */
diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c
index 5de4d24..0ccc111 100644
--- a/src/qemu/qemu_monitor_text.c
+++ b/src/qemu/qemu_monitor_text.c
@@ -3429,3 +3429,168 @@ cleanup:
VIR_FREE(cmd);
return ret;
}
+
+
+int qemuMonitorTextSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags)
+{
+ char *cmd = NULL;
+ char *result = NULL;
+ int ret = 0;
+ const char *cmd_name = NULL;
+
+ /* For the not specified fields, 0 by default */
+ if (flags) {
+ cmd_name = "block_set_io_throttle";
+ ret = virAsprintf(&cmd, "%s %s %llu %llu %llu %llu %llu %llu", cmd_name,
+ device, info->total_bytes_sec, info->read_bytes_sec,
+ info->write_bytes_sec, info->total_iops_sec,
+ info->read_iops_sec, info->write_iops_sec);
+ }
+
+ if (ret < 0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ if (qemuMonitorHMPCommand(mon, cmd, &result) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("cannot run monitor command"));
+ ret = -1;
+ goto cleanup;
+ }
+
+ if (qemuMonitorTextCommandNotFound(cmd_name, result)) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("Command '%s' is not found"), cmd_name);
+ ret = -1;
+ goto cleanup;
+ }
+
+cleanup:
+ VIR_FREE(cmd);
+ VIR_FREE(result);
+ return ret;
+}
+
+static int qemuMonitorTextParseBlockIoThrottle(const char *result,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply)
+{
+ char *dummy = NULL;
+ int ret = -1;
+ const char *p, *eol;
+ int devnamelen = strlen(device);
+
+ p = result;
+
+ while (*p) {
+ if (STRPREFIX(p, QEMU_DRIVE_HOST_PREFIX))
+ p += strlen(QEMU_DRIVE_HOST_PREFIX);
+
+ if (STREQLEN(p, device, devnamelen) &&
+ p[devnamelen] == ':' && p[devnamelen+1] == ' ') {
+
+ eol = strchr(p, '\n');
+ if (!eol)
+ eol = p + strlen(p);
+
+ p += devnamelen + 2; /*Skip to first label. */
+
+ while (*p) {
+ if (STRPREFIX(p, "bps=")) {
+ p += strlen("bps=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->total_bytes_sec) == -1)
+ VIR_DEBUG("error reading total_bytes_sec: %s", p);
+ } else if (STRPREFIX(p, "bps_rd=")) {
+ p += strlen("bps_rd=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->read_bytes_sec) == -1)
+ VIR_DEBUG("error reading read_bytes_sec: %s", p);
+ } else if (STRPREFIX(p, "bps_wr=")) {
+ p += strlen("bps_wr=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->write_bytes_sec) == -1)
+ VIR_DEBUG("error reading write_bytes_sec: %s", p);
+ } else if (STRPREFIX(p, "iops=")) {
+ p += strlen("iops=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->total_iops_sec) == -1)
+ VIR_DEBUG("error reading total_iops_sec: %s", p);
+ } else if (STRPREFIX(p, "iops_rd=")) {
+ p += strlen("iops_rd=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->read_iops_sec) == -1)
+ VIR_DEBUG("error reading read_iops_sec: %s", p);
+ } else if (STRPREFIX(p, "iops_wr=")) {
+ p += strlen("iops_wr=");
+ if (virStrToLong_ull(p, &dummy, 10, &reply->write_iops_sec) == -1)
+ VIR_DEBUG("error reading write_iops_sec: %s", p);
+ } else {
+ VIR_DEBUG(" unknown block info %s", p);
+ }
+
+ /* Skip to next label. */
+ p = strchr (p, ' ');
+ if (!p || p >= eol)
+ break;
+ p++;
+ }
+ ret = 0;
+ goto cleanup;
+ }
+
+ /* Skip to next line. */
+ p = strchr (p, '\n');
+ if (!p)
+ break;
+ p++;
+ }
+
+ qemuReportError(VIR_ERR_INVALID_ARG,
+ _("No info for device '%s'"), device);
+
+cleanup:
+ return ret;
+}
+
+int qemuMonitorTextGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags)
+{
+ char *cmd = NULL;
+ char *result = NULL;
+ int ret = 0;
+ const char *cmd_name = NULL;
+
+ if (flags) {
+ cmd_name = "info block";
+ ret = virAsprintf(&cmd, "%s", cmd_name);
+ }
+
+ if (ret < 0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ if (qemuMonitorHMPCommand(mon, cmd, &result) < 0) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("cannot run monitor command"));
+ ret = -1;
+ goto cleanup;
+ }
+
+ if (qemuMonitorTextCommandNotFound(cmd_name, result)) {
+ qemuReportError(VIR_ERR_OPERATION_INVALID,
+ _("Command '%s' is not found"), cmd_name);
+ ret = -1;
+ goto cleanup;
+ }
+
+ ret = qemuMonitorTextParseBlockIoThrottle(result, device, reply);
+
+cleanup:
+ VIR_FREE(cmd);
+ VIR_FREE(result);
+ return ret;
+}
+
diff --git a/src/qemu/qemu_monitor_text.h b/src/qemu/qemu_monitor_text.h
index f32fce0..1c47d39 100644
--- a/src/qemu/qemu_monitor_text.h
+++ b/src/qemu/qemu_monitor_text.h
@@ -248,4 +248,14 @@ int qemuMonitorTextOpenGraphics(qemuMonitorPtr mon,
const char *fdname,
bool skipauth);
+int qemuMonitorTextSetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags);
+
+int qemuMonitorTextGetBlockIoThrottle(qemuMonitorPtr mon,
+ const char *device,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags);
+
#endif /* QEMU_MONITOR_TEXT_H */
--
1.7.1
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