[libvirt] [PATCH 5/9] blkio: Setting throttle blkio cgroup for domain
Gao feng
gaofeng at cn.fujitsu.com
Mon Dec 2 06:48:00 UTC 2013
This patch extends virCgroupSetBlkioWeightDevice and
rename it the virCgroupSetBlkioDevice, now we can use
this interface to set up throttle blkio cgroup too.
Signed-off-by: Guan Qiang <hzguanqiang at corp.netease.com>
Signed-off-by: Gao feng <gaofeng at cn.fujitsu.com>
---
src/libvirt_private.syms | 3 +
src/lxc/lxc_cgroup.c | 10 ++-
src/qemu/qemu_cgroup.c | 11 +--
src/qemu/qemu_driver.c | 10 ++-
src/util/vircgroup.c | 170 ++++++++++++++++++++++++++++++++++++++++++++---
src/util/vircgroup.h | 18 +++++
6 files changed, 203 insertions(+), 19 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index e5f7cbd..c008e2b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1024,6 +1024,9 @@ virCgroupNewVcpu;
virCgroupPathOfController;
virCgroupRemove;
virCgroupRemoveRecursively;
+virCgroupSetBlkioDevice;
+virCgroupSetBlkioDeviceBps;
+virCgroupSetBlkioDeviceIops;
virCgroupSetBlkioDeviceWeight;
virCgroupSetBlkioWeight;
virCgroupSetCpuCfsPeriod;
diff --git a/src/lxc/lxc_cgroup.c b/src/lxc/lxc_cgroup.c
index 310a476..1c4bee5 100644
--- a/src/lxc/lxc_cgroup.c
+++ b/src/lxc/lxc_cgroup.c
@@ -113,9 +113,13 @@ static int virLXCCgroupSetupBlkioTune(virDomainDefPtr def,
if (def->blkio.ndevices) {
for (i = 0; i < def->blkio.ndevices; i++) {
virBlkioDevicePtr dev = &def->blkio.devices[i];
- if (!dev->weight)
- continue;
- if (virCgroupSetBlkioDeviceWeight(cgroup, dev->path, dev->weight) < 0)
+ if (virCgroupSetBlkioDevice(cgroup,
+ dev->path,
+ dev->weight,
+ dev->riops,
+ dev->wiops,
+ dev->rbps,
+ dev->wbps) < 0)
return -1;
}
}
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index a18955e..3b579ca 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -400,10 +400,13 @@ qemuSetupBlkioCgroup(virDomainObjPtr vm)
if (vm->def->blkio.ndevices) {
for (i = 0; i < vm->def->blkio.ndevices; i++) {
virBlkioDevicePtr dev = &vm->def->blkio.devices[i];
- if (!dev->weight)
- continue;
- if (virCgroupSetBlkioDeviceWeight(priv->cgroup, dev->path,
- dev->weight) < 0)
+ if (virCgroupSetBlkioDevice(priv->cgroup,
+ dev->path,
+ dev->weight,
+ dev->riops,
+ dev->wiops,
+ dev->rbps,
+ dev->wbps) < 0)
return -1;
}
}
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 5c0c5e5..61dbe7f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7616,9 +7616,13 @@ qemuDomainSetBlkioParameters(virDomainPtr dom,
continue;
}
for (j = 0; j < ndevices; j++) {
- if (virCgroupSetBlkioDeviceWeight(priv->cgroup,
- devices[j].path,
- devices[j].weight) < 0) {
+ if (virCgroupSetBlkioDevice(priv->cgroup,
+ devices[j].path,
+ devices[j].weight,
+ devices[j].riops,
+ devices[j].wiops,
+ devices[j].rbps,
+ devices[j].wbps) < 0) {
ret = -1;
break;
}
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 5c43e10..7f9ba49 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -1824,18 +1824,110 @@ virCgroupGetBlkioWeight(virCgroupPtr group, unsigned int *weight)
return ret;
}
+/**
+ * virCgroupSetBlkioDeviceIops:
+ * @group: The cgroup to change block io setting for
+ * @path: The path of device
+ * @read: setup the read iops or write iops
+ * @iops: The new device iops throttle, or 0 to clear
+ *
+ * Returns: 0 on success, -1 on error
+ */
+int
+virCgroupSetBlkioDeviceIops(virCgroupPtr group,
+ const char *path,
+ bool read,
+ unsigned int iops)
+{
+ char *str;
+ struct stat sb;
+ int ret;
+
+ if (stat(path, &sb) < 0) {
+ virReportSystemError(errno,
+ _("Path '%s' is not accessible"),
+ path);
+ return -1;
+ }
+
+ if (!S_ISBLK(sb.st_mode)) {
+ virReportSystemError(EINVAL,
+ _("Path '%s' must be a block device"),
+ path);
+ return -1;
+ }
+
+ if (virAsprintf(&str, "%d:%d %u", major(sb.st_rdev),
+ minor(sb.st_rdev), iops) < 0)
+ return -1;
+
+ ret = virCgroupSetValueStr(group,
+ VIR_CGROUP_CONTROLLER_BLKIO,
+ read ?
+ "blkio.throttle.read_iops_device" :
+ "blkio.throttle.write_iops_device",
+ str);
+
+ VIR_FREE(str);
+ return ret;
+}
+
/**
- * virCgroupSetBlkioDeviceWeight:
+ * virCgroupSetBlkioDeviceBps:
+ * @group: The cgroup to change block io setting for
+ * @path: The path of device
+ * @read: setup the read bps or write bps
+ * @bps: The new device bps throttle, or 0 to clear
*
- * @group: The cgroup to change io device weight device for
- * @path: The device with a weight to alter
+ * Returns: 0 on success, -1 on error
+ */
+int
+virCgroupSetBlkioDeviceBps(virCgroupPtr group,
+ const char *path,
+ bool read,
+ unsigned long long bps)
+{
+ char *str;
+ struct stat sb;
+ int ret;
+
+ if (stat(path, &sb) < 0) {
+ virReportSystemError(errno,
+ _("Path '%s' is not accessible"),
+ path);
+ return -1;
+ }
+
+ if (!S_ISBLK(sb.st_mode)) {
+ virReportSystemError(EINVAL,
+ _("Path '%s' must be a block device"),
+ path);
+ return -1;
+ }
+
+ if (virAsprintf(&str, "%d:%d %llu", major(sb.st_rdev),
+ minor(sb.st_rdev), bps) < 0)
+ return -1;
+
+ ret = virCgroupSetValueStr(group,
+ VIR_CGROUP_CONTROLLER_BLKIO,
+ read ?
+ "blkio.throttle.read_bps_device" :
+ "blkio.throttle.write_bps_device",
+ str);
+
+ VIR_FREE(str);
+ return ret;
+}
+
+/**
+ * virCgroupSetBlkioDeviceWeight:
+ * @group: The cgroup to change block io setting for
+ * @path: The path of device
* @weight: The new device weight (100-1000),
* (10-1000) after kernel 2.6.39, or 0 to clear
*
- * device_weight is treated as a write-only parameter, so
- * there isn't a getter counterpart.
- *
* Returns: 0 on success, -1 on error
*/
int
@@ -1861,8 +1953,8 @@ virCgroupSetBlkioDeviceWeight(virCgroupPtr group,
return -1;
}
- if (virAsprintf(&str, "%d:%d %d", major(sb.st_rdev), minor(sb.st_rdev),
- weight) < 0)
+ if (virAsprintf(&str, "%d:%d %u", major(sb.st_rdev),
+ minor(sb.st_rdev), weight) < 0)
return -1;
ret = virCgroupSetValueStr(group,
@@ -1874,6 +1966,47 @@ virCgroupSetBlkioDeviceWeight(virCgroupPtr group,
}
+/**
+ * virCgroupSetBlkioDevice:
+ *
+ * @group: The cgroup to change block io setting for
+ * @path: The path of device
+ * @weight: The new device weight (100-1000),
+ * (10-1000) after kernel 2.6.39
+ * @riops: The new device read iops throttle
+ * @wiops: The new device write iops throttle
+ * @rbps: The new device read bps throttle
+ * @wbps: The new device write bps throttle
+ *
+ * Returns: 0 on success, -1 on error
+ */
+int
+virCgroupSetBlkioDevice(virCgroupPtr group,
+ const char *path,
+ unsigned int weight,
+ unsigned int riops,
+ unsigned int wiops,
+ unsigned long long rbps,
+ unsigned long long wbps)
+{
+ if (weight && (virCgroupSetBlkioDeviceWeight(group, path, weight) < 0))
+ return -1;
+
+ if (riops && (virCgroupSetBlkioDeviceIops(group, path, 1, riops) < 0))
+ return -1;
+
+ if (wiops && (virCgroupSetBlkioDeviceIops(group, path, 0, wiops) < 0))
+ return -1;
+
+ if (rbps && (virCgroupSetBlkioDeviceBps(group, path, 1, rbps) < 0))
+ return -1;
+
+ if (wbps && (virCgroupSetBlkioDeviceBps(group, path, 0, wbps) < 0))
+ return -1;
+
+ return 0;
+}
+
/**
* virCgroupSetMemory:
@@ -3280,11 +3413,30 @@ virCgroupGetBlkioWeight(virCgroupPtr group ATTRIBUTE_UNUSED,
return -1;
}
-
int
virCgroupSetBlkioDeviceWeight(virCgroupPtr group ATTRIBUTE_UNUSED,
const char *path ATTRIBUTE_UNUSED,
unsigned int weight ATTRIBUTE_UNUSED)
+
+int
+virCgroupSetBlkioDeviceIops(virCgroupPtr group ATTRIBUTE_UNUSED,
+ const char *path ATTRIBUTE_UNUSED,
+ bool read ATTRIBUTE_UNUSED,
+ unsigned long long iops ATTRIBUTE_UNUSED)
+
+int
+virCgroupSetBlkioDeviceBps(virCgroupPtr group ATTRIBUTE_UNUSED,
+ const char *path ATTRIBUTE_UNUSED,
+ bool read ATTRIBUTE_UNUSED,
+ unsigned long long bps ATTRIBUTE_UNUSED)
+int
+virCgroupSetBlkioDevice(virCgroupPtr group ATTRIBUTE_UNUSED,
+ const char *path ATTRIBUTE_UNUSED,
+ unsigned int weight ATTRIBUTE_UNUSED,
+ unsigned int riops ATTRIBUTE_UNUSED,
+ unsigned int wiops ATTRIBUTE_UNUSED,
+ unsigned long long rbps ATTRIBUTE_UNUSED,
+ unsigned long long wbps ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Control groups not supported on this platform"));
diff --git a/src/util/vircgroup.h b/src/util/vircgroup.h
index 835eb30..99c3a35 100644
--- a/src/util/vircgroup.h
+++ b/src/util/vircgroup.h
@@ -126,6 +126,24 @@ int virCgroupSetBlkioDeviceWeight(virCgroupPtr group,
const char *path,
unsigned int weight);
+int virCgroupSetBlkioDeviceIops(virCgroupPtr group,
+ const char *path,
+ bool read,
+ unsigned int iops);
+
+int virCgroupSetBlkioDeviceBps(virCgroupPtr group,
+ const char *path,
+ bool read,
+ unsigned long long bps);
+
+int virCgroupSetBlkioDevice(virCgroupPtr group,
+ const char *path,
+ unsigned int weight,
+ unsigned int riops,
+ unsigned int wiops,
+ unsigned long long rbps,
+ unsigned long long wbps);
+
int virCgroupSetMemory(virCgroupPtr group, unsigned long long kb);
int virCgroupGetMemoryUsage(virCgroupPtr group, unsigned long *kb);
--
1.8.3.1
More information about the libvir-list
mailing list