diff mbox

[v10,10/10] Add a new API to start/stop replication, do checkpoint to all BDSes

Message ID 1443161858-20533-11-git-send-email-wency@cn.fujitsu.com
State New
Headers show

Commit Message

Wen Congyang Sept. 25, 2015, 6:17 a.m. UTC 
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
---
 block.c               | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++
 include/block/block.h |  4 +++
 2 files changed, 87 insertions(+)
diff mbox

Patch

diff --git a/block.c b/block.c
index 5cb916b..5891c4d 100644
--- a/block.c
+++ b/block.c
@@ -4296,3 +4296,86 @@  void bdrv_stop_replication(BlockDriverState *bs, bool failover, Error **errp)
                    " replication", bs->filename);
     }
 }
+
+void bdrv_start_replication_all(ReplicationMode mode, Error **errp)
+{
+    BlockDriverState *bs = NULL, *temp = NULL;
+    Error *local_err = NULL;
+
+    while ((bs = bdrv_next(bs))) {
+        if (!QLIST_EMPTY(&bs->parents)) {
+            /* It is not top BDS */
+            continue;
+        }
+
+        if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) {
+            continue;
+        }
+
+        bdrv_start_replication(bs, mode, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            goto fail;
+        }
+    }
+
+    return;
+
+fail:
+    while ((temp = bdrv_next(temp)) && bs != temp) {
+        bdrv_stop_replication(temp, false, NULL);
+    }
+}
+
+void bdrv_do_checkpoint_all(Error **errp)
+{
+    BlockDriverState *bs = NULL;
+    Error *local_err = NULL;
+
+    while ((bs = bdrv_next(bs))) {
+        if (!QLIST_EMPTY(&bs->parents)) {
+            /* It is not top BDS */
+            continue;
+        }
+
+        if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) {
+            continue;
+        }
+
+        bdrv_do_checkpoint(bs, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
+    }
+}
+
+void bdrv_stop_replication_all(bool failover, Error **errp)
+{
+    BlockDriverState *bs = NULL;
+    Error *local_err = NULL;
+
+    while ((bs = bdrv_next(bs))) {
+        if (!QLIST_EMPTY(&bs->parents)) {
+            /* It is not top BDS */
+            continue;
+        }
+
+        if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) {
+            continue;
+        }
+
+        bdrv_stop_replication(bs, failover, &local_err);
+        if (!errp) {
+            /*
+             * The caller doesn't care the result, they just
+             * want to stop all block's replication.
+             */
+            continue;
+        }
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
+    }
+}
diff --git a/include/block/block.h b/include/block/block.h
index 40ef59f..eb6a4a2 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -616,4 +616,8 @@  void bdrv_start_replication(BlockDriverState *bs, ReplicationMode mode,
 void bdrv_do_checkpoint(BlockDriverState *bs, Error **errp);
 void bdrv_stop_replication(BlockDriverState *bs, bool failover, Error **errp);
 
+void bdrv_start_replication_all(ReplicationMode mode, Error **errp);
+void bdrv_do_checkpoint_all(Error **errp);
+void bdrv_stop_replication_all(bool failover, Error **errp);
+
 #endif