On 29.10.2014 13:16, Matthias Gatto wrote:
Add support for bps_max and friends in the driver part.
In the part checking if a qemu is running, check if the running binary
support bps_max, if not print an error message, if yes add it to
"info" variable
Signed-off-by: Matthias Gatto <matthias.gatto@xxxxxxxxxxxx>
---
include/libvirt/libvirt-domain.h | 56 ++++++++++++
src/qemu/qemu_driver.c | 187 +++++++++++++++++++++++++++++++++++++--
src/qemu/qemu_monitor.c | 10 ++-
src/qemu/qemu_monitor.h | 6 +-
src/qemu/qemu_monitor_json.c | 11 ++-
src/qemu/qemu_monitor_json.h | 6 +-
tests/qemumonitorjsontest.c | 4 +-
7 files changed, 259 insertions(+), 21 deletions(-)
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 6146244..652512b 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -3251,6 +3251,62 @@ typedef void (*virConnectDomainEventDeviceRemovedCallback)(virConnectPtr conn,
# define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC "blkdeviotune.write_iops_sec"
/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC_MAX:
+ *
+ * Marco represents the total throughput limit in maximum bytes per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC_MAX "blkdeviotune.total_bytes_sec_max"
Yet again, s/#define/# define/.
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC_MAX:
+ *
+ * Marco represents the read throughput limit in maximum bytes per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC_MAX "blkdeviotune.read_bytes_sec_max"
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC_MAX:
+ *
+ * Macro represents the write throughput limit in maximum bytes per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC_MAX "blkdeviotune.write_bytes_sec_max"
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC_MAX:
+ *
+ * Macro represents the total maximum I/O operations per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC_MAX "blkdeviotune.total_iops_sec_max"
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC_MAX:
+ *
+ * Macro represents the read maximum I/O operations per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC_MAX "blkdeviotune.read_iops_sec_max"
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC_MAX:
+ *
+ * Macro represents the write maximum I/O operations per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC_MAX "blkdeviotune.write_iops_sec_max"
+
+/**
+ * VIR_DOMAIN_TUNABLE_BLKDEV_SIZE_IOPS_SEC:
+ *
+ * Macro represents the size maximum I/O operations per second,
+ * as VIR_TYPED_PARAM_ULLONG.
+ */
+#define VIR_DOMAIN_TUNABLE_BLKDEV_SIZE_IOPS_SEC "blkdeviotune.size_iops_sec"
+
+/**
* virConnectDomainEventTunableCallback:
* @conn: connection object
* @dom: domain on which the event occurred
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 5eccacc..54ba154 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -105,6 +105,7 @@ VIR_LOG_INIT("qemu.qemu_driver");
#define QEMU_NB_MEM_PARAM 3
#define QEMU_NB_BLOCK_IO_TUNE_PARAM 6
+#define QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX 13
#define QEMU_NB_NUMA_PARAM 2
@@ -16520,6 +16521,10 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
int conf_idx = -1;
bool set_bytes = false;
bool set_iops = false;
+ bool set_bytes_max = false;
+ bool set_iops_max = false;
+ bool set_size_iops = false;
+ bool supportMaxOptions = true;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
virObjectEventPtr event = NULL;
@@ -16542,6 +16547,20 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC,
VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ VIR_DOMAIN_BLOCK_IOTUNE_SIZE_IOPS_SEC,
+ VIR_TYPED_PARAM_ULLONG,
NULL) < 0)
return -1;
@@ -16634,6 +16653,69 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC,
param->value.ul) < 0)
goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC_MAX)) {
+ info.total_bytes_sec_max = param->value.ul;
+ set_bytes_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC_MAX)) {
+ info.read_bytes_sec_max = param->value.ul;
+ set_bytes_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC_MAX)) {
+ info.write_bytes_sec_max = param->value.ul;
+ set_bytes_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC_MAX)) {
+ info.total_iops_sec_max = param->value.ul;
+ set_iops_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC_MAX)) {
+ info.read_iops_sec_max = param->value.ul;
+ set_iops_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC_MAX)) {
+ info.write_iops_sec_max = param->value.ul;
+ set_iops_max = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC_MAX,
+ param->value.ul) < 0)
+ goto endjob;
+ } else if (STREQ(param->field,
+ VIR_DOMAIN_BLOCK_IOTUNE_SIZE_IOPS_SEC)) {
+ info.size_iops_sec = param->value.ul;
+ set_size_iops = true;
+ if (virTypedParamsAddULLong(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_BLKDEV_SIZE_IOPS_SEC,
+ param->value.ul) < 0)
+ goto endjob;
}
}
@@ -16651,6 +16733,20 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
goto endjob;
}
+ if ((info.total_bytes_sec_max && info.read_bytes_sec_max) ||
+ (info.total_bytes_sec_max && info.write_bytes_sec_max)) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("total and read/write of bytes_sec_max cannot be set at the same time"));
+ goto endjob;
+ }
+
+ if ((info.total_iops_sec_max && info.read_iops_sec_max) ||
+ (info.total_iops_sec_max && info.write_iops_sec_max)) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("total and read/write of iops_sec_max cannot be set at the same time"));
+ goto endjob;
+ }
+
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
if ((conf_idx = virDomainDiskIndexByName(persistentDef, disk, true)) < 0) {
virReportError(VIR_ERR_INVALID_ARG,
@@ -16661,6 +16757,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
+ supportMaxOptions = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE);
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("block I/O throttling not supported with this "
@@ -16668,6 +16765,13 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
goto endjob;
}
+ if (!supportMaxOptions && (set_iops_max || set_bytes_max)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("a block I/O throttling parameter is not supported with this "
+ "QEMU binary"));
+ goto endjob;
+ }
+
if (!(device = qemuDiskPathToAlias(vm, disk, &idx)))
goto endjob;
@@ -16680,13 +16784,25 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
info.read_bytes_sec = oldinfo->read_bytes_sec;
info.write_bytes_sec = oldinfo->write_bytes_sec;
}
+ if (!set_bytes_max) {
+ info.total_bytes_sec_max = oldinfo->total_bytes_sec_max;
+ info.read_bytes_sec_max = oldinfo->read_bytes_sec_max;
+ info.write_bytes_sec_max = oldinfo->write_bytes_sec_max;
+ }
if (!set_iops) {
info.total_iops_sec = oldinfo->total_iops_sec;
info.read_iops_sec = oldinfo->read_iops_sec;
info.write_iops_sec = oldinfo->write_iops_sec;
}
+ if (!set_iops_max) {
+ info.total_iops_sec_max = oldinfo->total_iops_sec_max;
+ info.read_iops_sec_max = oldinfo->read_iops_sec_max;
+ info.write_iops_sec_max = oldinfo->write_iops_sec_max;
+ }
+ if (!set_size_iops)
+ info.size_iops_sec = oldinfo->size_iops_sec;
qemuDomainObjEnterMonitor(driver, vm);
- ret = qemuMonitorSetBlockIoThrottle(priv->mon, device, &info);
+ ret = qemuMonitorSetBlockIoThrottle(priv->mon, device, &info, supportMaxOptions);
qemuDomainObjExitMonitor(driver, vm);
if (ret < 0)
goto endjob;
@@ -16730,6 +16846,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
}
endjob:
+
if (!qemuDomainObjEndJob(driver, vm))
vm = NULL;
@@ -16753,13 +16870,14 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
- qemuDomainObjPrivatePtr priv;
+ qemuDomainObjPrivatePtr priv = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainBlockIoTuneInfo reply;
char *device = NULL;
int ret = -1;
size_t i;
virCapsPtr caps = NULL;
+ bool supportMaxOptions = true;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
@@ -16778,8 +16896,9 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
goto cleanup;
if ((*nparams) == 0) {
- /* Current number of parameters supported by QEMU Block I/O Throttling */
- *nparams = QEMU_NB_BLOCK_IO_TUNE_PARAM;
+ /* Current number of parameters supported by QEMU Block I/O Throttling
+ * in the xml config */
+ *nparams = QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX;
Isn't the max depending on QEMU_CAPS_DRIVE_IOTUNE_MAX capability here?
And on the domain being up & running too?
ret = 0;
goto cleanup;
}
@@ -16798,8 +16917,12 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
priv = vm->privateData;
+ /* If the VM is running, we can check if the current VM can use optional parameters or not */
+ /* We didn't made this check sooner because we need the VM data to do so */
+ supportMaxOptions = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_MAX);
+ *nparams = supportMaxOptions ? QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX : QEMU_NB_BLOCK_IO_TUNE_PARAM;
I don't think we should overwrite nparams here. I mean, if user told us
he's interested just in first N params, we shouldn't go any further and
overwrite memory after the bounds.
qemuDomainObjEnterMonitor(driver, vm);
- ret = qemuMonitorGetBlockIoThrottle(priv->mon, device, &reply);
+ ret = qemuMonitorGetBlockIoThrottle(priv->mon, device, &reply, supportMaxOptions);
qemuDomainObjExitMonitor(driver, vm);
if (ret < 0)
goto endjob;
@@ -16816,7 +16939,7 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
reply = persistentDef->disks[idx]->blkdeviotune;
}
- for (i = 0; i < QEMU_NB_BLOCK_IO_TUNE_PARAM && i < *nparams; i++) {
+ for (i = 0; i < QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX && i < *nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
switch (i) {
@@ -16862,14 +16985,64 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
reply.write_iops_sec) < 0)
goto endjob;
break;
+ case 6:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.total_bytes_sec_max) < 0)
+ goto endjob;
+ break;
+ case 7:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.read_bytes_sec_max) < 0)
+ goto endjob;
+ break;
+ case 8:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.write_bytes_sec_max) < 0)
+ goto endjob;
+ break;
+ case 9:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.total_iops_sec_max) < 0)
+ goto endjob;
+ break;
+ case 10:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.read_iops_sec_max) < 0)
+ goto endjob;
+ break;
+ case 11:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC_MAX,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.write_iops_sec_max) < 0)
+ goto endjob;
+ break;
+ case 12:
+ if (virTypedParameterAssign(param,
+ VIR_DOMAIN_BLOCK_IOTUNE_SIZE_IOPS_SEC,
+ VIR_TYPED_PARAM_ULLONG,
+ reply.size_iops_sec) < 0)
+ goto endjob;
/* coverity[dead_error_begin] */
default:
break;
}
}
- if (*nparams > QEMU_NB_BLOCK_IO_TUNE_PARAM)
+ if (!supportMaxOptions && *nparams > QEMU_NB_BLOCK_IO_TUNE_PARAM)
*nparams = QEMU_NB_BLOCK_IO_TUNE_PARAM;
+ else if (*nparams > QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX)
+ *nparams = QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX;
ret = 0;
endjob:
Michal
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