3:42 p.m.
Implement the public definitions for the new API
virNodeSuspendForDuration() which will be subsequently used to
do a timed suspend on the host.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat(a)linux.vnet.ibm.com>
---
include/libvirt/libvirt.h.in | 16 +++++++++++
src/driver.h | 6 ++++
src/libvirt.c | 61 ++++++++++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 5 +++
4 files changed, 88 insertions(+), 0 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 2ab89f5..c89448b 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -250,6 +250,17 @@ typedef enum {
} virDomainCreateFlags;
+/**
+ * virNodeSuspendTarget:
+ *
+ * Flags to indicate which system-wide sleep state the host must be
+ * transitioned to.
+ */
+typedef enum {
+ VIR_NODE_SUSPEND_TARGET_MEM = (1 << 0),
+ VIR_NODE_SUSPEND_TARGET_DISK = (1 << 1),
+ VIR_NODE_SUSPEND_TARGET_HYBRID = (1 << 2),
+} virNodeSuspendTarget;
/**
* virStream:
@@ -1085,6 +1096,11 @@ unsigned long long virNodeGetFreeMemory (virConnectPtr
conn);
int virNodeGetSecurityModel (virConnectPtr conn,
virSecurityModelPtr secmodel);
+int virNodeSuspendForDuration (virConnectPtr conn,
+ unsigned int target,
+ unsigned long long duration,
+ unsigned int flags);
+
/*
* Gather list of running domains
*/
diff --git a/src/driver.h b/src/driver.h
index 4c14aaa..5f3665d 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -740,6 +740,11 @@ typedef int
(*virDrvDomainBlockPull)(virDomainPtr dom, const char *path,
unsigned long bandwidth, unsigned int flags);
+typedef int
+ (*virDrvNodeSuspendForDuration)(virConnectPtr conn, unsigned int target,
+ unsigned long long duration,
+ unsigned int flags);
+
/**
* _virDriver:
@@ -899,6 +904,7 @@ struct _virDriver {
virDrvDomainGetBlockJobInfo domainGetBlockJobInfo;
virDrvDomainBlockJobSetSpeed domainBlockJobSetSpeed;
virDrvDomainBlockPull domainBlockPull;
+ virDrvNodeSuspendForDuration nodeSuspendForDuration;
};
typedef int
diff --git a/src/libvirt.c b/src/libvirt.c
index 1518ed2..7a13b11 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -6359,6 +6359,67 @@ error:
}
/**
+ * virNodeSuspendForDuration:
+ * @conn: pointer to the hypervisor connection
+ * @target: the state to which the host must be suspended to,
+ * such as: VIR_NODE_SUSPEND_TARGET_MEM (Suspend-to-RAM)
+ * VIR_NODE_SUSPEND_TARGET_DISK (Suspend-to-Disk)
+ * VIR_NODE_SUSPEND_TARGET_HYBRID (Hybrid-Suspend,
+ * which is a combination of the former modes).
+ * @duration: the time duration in seconds for which the host
+ * has to be suspended
+ * @flags: any flag values that might need to be passed;
+ * currently unused (0).
+ *
+ * Attempt to suspend the node (host machine) for the given duration of
+ * time in the specified state (Suspend-to-RAM, Suspend-to-Disk or
+ * Hybrid-Suspend). Schedule the node's Real-Time-Clock interrupt to
+ * resume the node after the duration is complete.
+ *
+ * Returns 0 on success (i.e., the node will be suspended after a short
+ * delay), -1 on failure (the operation is not supported, or an attempted
+ * suspend is already underway).
+ */
+int
+virNodeSuspendForDuration(virConnectPtr conn,
+ unsigned int target,
+ unsigned long long duration,
+ unsigned int flags)
+{
+
+ VIR_DEBUG("conn=%p, target=%d, duration=%lld", conn, target, duration);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECT(conn)) {
+ virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
+ virDispatchError(NULL);
+ return -1;
+ }
+
+ if (conn->flags & VIR_CONNECT_RO) {
+ virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+ goto error;
+ }
+
+ if (conn->driver->nodeSuspendForDuration) {
+ int ret;
+ ret = conn->driver->nodeSuspendForDuration(conn, target,
+ duration, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(conn);
+ return -1;
+}
+
+
+/**
* virDomainGetSchedulerType:
* @domain: pointer to domain object
* @nparams: pointer to number of scheduler parameters, can be NULL
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index bcefb10..a1eede6 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -498,4 +498,9 @@ LIBVIRT_0.9.7 {
virDomainSnapshotNumChildren;
} LIBVIRT_0.9.5;
+LIBVIRT_0.9.8 {
+ global:
+ virNodeSuspendForDuration;
+} LIBVIRT_0.9.7;
+
# .... define new API here using predicted next version number ....