qemu: Implement virDomainFSFreeze and virDomainFSThaw

Use qemuDomainSnapshotFSFreeze() and qemuDomainSnapshotFSFThaw() which are
already implemented for snapshot quiescing.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index e587183157dd56035392cce19a3bd44cc8e9c670..24c7781add50699d07b52d757fa9ce1c3a6d0ad0 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -16549,6 +16549,102 @@ qemuConnectGetCPUModelNames(virConnectPtr conn,
 }
 
 
+static int
+qemuDomainFSFreeze(virDomainPtr dom,
+                   const char **mountpoints,
+                   unsigned int nmountpoints,
+                   unsigned int flags)
+{
+    virQEMUDriverPtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+
+    virCheckFlags(0, -1);
+
+    if (mountpoints || nmountpoints) {
+        virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+                       _("specifying mountpoints is not supported"));
+        return ret;
+    }
+
+    if (!(vm = qemuDomObjFromDomain(dom)))
+        goto cleanup;
+
+    if (virDomainFSFreezeEnsureACL(dom->conn, vm->def) < 0)
+        goto cleanup;
+
+    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+        goto cleanup;
+
+    if (!virDomainObjIsActive(vm)) {
+        virReportError(VIR_ERR_OPERATION_INVALID,
+                       "%s", _("domain is not running"));
+        goto endjob;
+    }
+
+    ret = qemuDomainSnapshotFSFreeze(driver, vm);
+    if (ret == -2) {
+        qemuDomainSnapshotFSThaw(driver, vm, false);
+        ret = -1;
+    }
+
+ endjob:
+    if (!qemuDomainObjEndJob(driver, vm))
+        vm = NULL;
+
+ cleanup:
+    if (vm)
+        virObjectUnlock(vm);
+    return ret;
+}
+
+
+static int
+qemuDomainFSThaw(virDomainPtr dom,
+                 const char **mountpoints,
+                 unsigned int nmountpoints,
+                 unsigned int flags)
+{
+    virQEMUDriverPtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+
+    virCheckFlags(0, -1);
+
+    if (mountpoints || nmountpoints) {
+        virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+                       _("specifying mountpoints is not supported"));
+        return ret;
+    }
+
+    if (!(vm = qemuDomObjFromDomain(dom)))
+        goto cleanup;
+
+    if (virDomainFSThawEnsureACL(dom->conn, vm->def) < 0)
+        goto cleanup;
+
+    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+        goto cleanup;
+
+    if (!virDomainObjIsActive(vm)) {
+        virReportError(VIR_ERR_OPERATION_INVALID,
+                       "%s", _("domain is not running"));
+        goto endjob;
+    }
+
+    ret = qemuDomainSnapshotFSThaw(driver, vm, true);
+
+ endjob:
+    if (!qemuDomainObjEndJob(driver, vm))
+        vm = NULL;
+
+ cleanup:
+    if (vm)
+        virObjectUnlock(vm);
+    return ret;
+}
+
+
 static virDriver qemuDriver = {
     .no = VIR_DRV_QEMU,
     .name = QEMU_DRIVER_NAME,
@@ -16739,6 +16835,8 @@ static virDriver qemuDriver = {
     .domainMigrateFinish3Params = qemuDomainMigrateFinish3Params, /* 1.1.0 */
     .domainMigrateConfirm3Params = qemuDomainMigrateConfirm3Params, /* 1.1.0 */
     .connectGetCPUModelNames = qemuConnectGetCPUModelNames, /* 1.1.3 */
+    .domainFSFreeze = qemuDomainFSFreeze, /* 1.2.5 */
+    .domainFSThaw = qemuDomainFSThaw, /* 1.2.5 */
 };