2:32 p.m.
This patch add new pulic API virDomainSetBlockIoTune and
virDomainGetBlockIoTune.
Signed-off-by: Zhi Yong Wu <wuzhy(a)linux.vnet.ibm.com>
Signed-off-by: Lei Li <lilei(a)linux.vnet.ibm.com>
---
include/libvirt/libvirt.h.in | 26 +++++++++
src/driver.h | 19 +++++++
src/libvirt.c | 115 ++++++++++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 2 +
4 files changed, 162 insertions(+), 0 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index aa320b6..a79c35e 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -1640,6 +1640,32 @@ int virDomainBlockJobSetSpeed(virDomainPtr dom, const char
*path,
int virDomainBlockPull(virDomainPtr dom, const char *path,
unsigned long bandwidth, unsigned int flags);
+/*
+ * Block I/O throttling support
+ */
+
+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
+virDomainSetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags);
+int
+virDomainGetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags);
+
/*
* NUMA support
diff --git a/src/driver.h b/src/driver.h
index 4c14aaa..9628ad7 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -741,6 +741,23 @@ typedef int
unsigned long bandwidth, unsigned int flags);
+/*
+ * Block I/O throttling support
+ */
+
+typedef int
+ (*virDrvDomainSetBlockIoTune)(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags);
+
+typedef int
+ (*virDrvDomainGetBlockIoTune)(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags);
+
+
/**
* _virDriver:
*
@@ -899,6 +916,8 @@ struct _virDriver {
virDrvDomainGetBlockJobInfo domainGetBlockJobInfo;
virDrvDomainBlockJobSetSpeed domainBlockJobSetSpeed;
virDrvDomainBlockPull domainBlockPull;
+ virDrvDomainSetBlockIoTune domainSetBlockIoTune;
+ virDrvDomainGetBlockIoTune domainGetBlockIoTune;
};
typedef int
diff --git a/src/libvirt.c b/src/libvirt.c
index b0d1e01..79ac84d 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -17083,3 +17083,118 @@ error:
virDispatchError(dom->conn);
return -1;
}
+
+/**
+ * virDomainSetBlockIoTune:
+ * @dom: pointer to domain object
+ * @disk: Fully-qualified disk name
+ * @info: Specify block I/O limits in bytes
+ * @flags: An OR'ed set of virDomainModificationImpact
+ *
+ * This function is mainly to enable Block I/O throttling function in libvirt.
+ * It is used to change the block I/O throttling setting for specified domain.
+ *
+ * Returns 0 if the operation has started, -1 on failure.
+ */
+int virDomainSetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr info,
+ unsigned int flags)
+{
+ virConnectPtr conn;
+
+ VIR_DOMAIN_DEBUG(dom, "disk=%p, info=%p, flags=%x",
+ disk, info, flags);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
+ virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
+ virDispatchError(NULL);
+ return -1;
+ }
+ conn = dom->conn;
+
+ if (dom->conn->flags & VIR_CONNECT_RO) {
+ virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+ goto error;
+ }
+
+ if (!disk) {
+ virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+ goto error;
+ }
+
+ if (!info) {
+ virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+ goto error;
+ }
+
+ if (conn->driver->domainSetBlockIoTune) {
+ int ret;
+ ret = conn->driver->domainSetBlockIoTune(dom, disk, info, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(dom->conn);
+ return -1;
+}
+
+/**
+ * virDomainGetBlockIoTune:
+ * @dom: pointer to domain object
+ * @disk: Fully-qualified disk name
+ * @reply: Specify block I/O info in bytes
+ * @flags: An OR'ed set of virDomainModificationImpact
+ *
+ * This function is mainly to enable Block I/O throttling function in libvirt.
+ * It is used to get the block I/O throttling setting for specified domain.
+ *
+ * Returns 0 if the operation has started, -1 on failure.
+ */
+
+int virDomainGetBlockIoTune(virDomainPtr dom,
+ const char *disk,
+ virDomainBlockIoTuneInfoPtr reply,
+ unsigned int flags)
+{
+ virConnectPtr conn;
+
+ VIR_DOMAIN_DEBUG(dom, "disk=%p, reply=%p, flags=%x",
+ disk, reply, flags);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
+ virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
+ virDispatchError(NULL);
+ return -1;
+ }
+ conn = dom->conn;
+
+ if (!disk) {
+ virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+ goto error;
+ }
+
+ if (conn->driver->domainGetBlockIoTune) {
+ int ret;
+ ret = conn->driver->domainGetBlockIoTune(dom, disk, reply, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(dom->conn);
+ return -1;
+
+}
+
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index bcefb10..4808891 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -496,6 +496,8 @@ LIBVIRT_0.9.7 {
virDomainSnapshotGetParent;
virDomainSnapshotListChildrenNames;
virDomainSnapshotNumChildren;
+ virDomainSetBlockIoTune;
+ virDomainGetBlockIoTune;
} LIBVIRT_0.9.5;
# .... define new API here using predicted next version number ....
--
1.7.1