[libvirt] [PATCH v4 1/5] Introduce virDomainFSFreeze() and virDomainFSThaw() public API
These will freeze and thaw filesystems within guest. The APIs take @flags
arguments which are currently not used, for future extensions.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama(a)hds.com>
---
include/libvirt/libvirt.h.in | 6 ++++
src/driver.h | 10 ++++++
src/libvirt.c | 70 ++++++++++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 2 +
4 files changed, 88 insertions(+)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 91e3e3b..afe92c6 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -5277,6 +5277,12 @@ int virDomainFSTrim(virDomainPtr dom,
unsigned long long minimum,
unsigned int flags);
+int virDomainFSFreeze(virDomainPtr dom,
+ unsigned int flags);
+
+int virDomainFSThaw(virDomainPtr dom,
+ unsigned int flags);
+
/**
* virSchedParameterType:
*
diff --git a/src/driver.h b/src/driver.h
index e66fc7a..50258e2 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -1149,6 +1149,14 @@ typedef int
unsigned int flags,
int cancelled);
+typedef int
+(*virDrvDomainFSFreeze)(virDomainPtr dom,
+ unsigned int flags);
+
+typedef int
+(*virDrvDomainFSThaw)(virDomainPtr dom,
+ unsigned int flags);
+
typedef struct _virDriver virDriver;
typedef virDriver *virDriverPtr;
@@ -1363,6 +1371,8 @@ struct _virDriver {
virDrvDomainMigrateFinish3Params domainMigrateFinish3Params;
virDrvDomainMigrateConfirm3Params domainMigrateConfirm3Params;
virDrvConnectGetCPUModelNames connectGetCPUModelNames;
+ virDrvDomainFSFreeze domainFSFreeze;
+ virDrvDomainFSThaw domainFSThaw;
};
diff --git a/src/libvirt.c b/src/libvirt.c
index 4454829..48b9902 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -20658,3 +20658,73 @@ virDomainFSTrim(virDomainPtr dom,
virDispatchError(dom->conn);
return -1;
}
+
+/**
+ * virDomainFSFreeze:
+ * @dom: a domain object
+ * @flags: extra flags, not used yet, so callers should always pass 0
+ *
+ * Freeze filesystems within the guest (hence guest agent may be
+ * required depending on hypervisor used).
+ *
+ * Returns 0 on success, -1 otherwise.
+ */
+int
+virDomainFSFreeze(virDomainPtr dom,
+ unsigned int flags)
+{
+ VIR_DOMAIN_DEBUG(dom, "flags=%x", flags);
+
+ virResetLastError();
+
+ virCheckDomainReturn(dom, -1);
+ virCheckReadOnlyGoto(dom->conn->flags, error);
+
+ if (dom->conn->driver->domainFSFreeze) {
+ int ret = dom->conn->driver->domainFSFreeze(dom, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virReportUnsupportedError();
+
+ error:
+ virDispatchError(dom->conn);
+ return -1;
+}
+
+/**
+ * virDomainFSThaw:
+ * @dom: a domain object
+ * @flags: extra flags, not used yet, so callers should always pass 0
+ *
+ * Thaw the frozen filesystems within the guest (hence guest agent
+ * may be required depending on hypervisor used).
+ *
+ * Returns 0 on success, -1 otherwise.
+ */
+int
+virDomainFSThaw(virDomainPtr dom,
+ unsigned int flags)
+{
+ VIR_DOMAIN_DEBUG(dom, "flags=%x", flags);
+
+ virResetLastError();
+
+ virCheckDomainReturn(dom, -1);
+ virCheckReadOnlyGoto(dom->conn->flags, error);
+
+ if (dom->conn->driver->domainFSThaw) {
+ int ret = dom->conn->driver->domainFSThaw(dom, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virReportUnsupportedError();
+
+ error:
+ virDispatchError(dom->conn);
+ return -1;
+}
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index 9ab0c92..42793c9 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -648,6 +648,8 @@ LIBVIRT_1.2.1 {
LIBVIRT_1.2.3 {
global:
virDomainCoreDumpWithFormat;
+ virDomainFSFreeze;
+ virDomainFSThaw;
} LIBVIRT_1.2.1;