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[Qemu-block] [PATCH COLO-Block v5 07/15] Add new block driver interface
From: |
Wen Congyang |
Subject: |
[Qemu-block] [PATCH COLO-Block v5 07/15] Add new block driver interface to connect/disconnect the remote target |
Date: |
Thu, 21 May 2015 12:53:00 +0800 |
In some cases, we want to connect/disconnect the remote target when
we need, not in bdrv_open()/bdrv_close().
Signed-off-by: Wen Congyang <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Gonglei <address@hidden>
---
block.c | 24 ++++++++++++++++++++++++
include/block/block.h | 3 +++
include/block/block_int.h | 3 +++
3 files changed, 30 insertions(+)
diff --git a/block.c b/block.c
index 1b362ba..9a8ef9f 100644
--- a/block.c
+++ b/block.c
@@ -4191,3 +4191,27 @@ BlockAcctStats *bdrv_get_stats(BlockDriverState *bs)
{
return &bs->stats;
}
+
+void bdrv_connect(BlockDriverState *bs, Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_connect) {
+ drv->bdrv_connect(bs, errp);
+ } else if (bs->file) {
+ bdrv_connect(bs->file, errp);
+ } else {
+ error_setg(errp, "this feature or command is not currently supported");
+ }
+}
+
+void bdrv_disconnect(BlockDriverState *bs)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_disconnect) {
+ drv->bdrv_disconnect(bs);
+ } else if (bs->file) {
+ bdrv_disconnect(bs->file);
+ }
+}
diff --git a/include/block/block.h b/include/block/block.h
index 006c941..e479a34 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -592,4 +592,7 @@ void bdrv_flush_io_queue(BlockDriverState *bs);
BlockAcctStats *bdrv_get_stats(BlockDriverState *bs);
+void bdrv_connect(BlockDriverState *bs, Error **errp);
+void bdrv_disconnect(BlockDriverState *bs);
+
#endif
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 49ca826..da29fa7 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -290,6 +290,9 @@ struct BlockDriver {
*/
int (*bdrv_probe_geometry)(BlockDriverState *bs, HDGeometry *geo);
+ void (*bdrv_connect)(BlockDriverState *bs, Error **errp);
+ void (*bdrv_disconnect)(BlockDriverState *bs);
+
QLIST_ENTRY(BlockDriver) list;
};
--
2.1.0
- [Qemu-block] [PATCH COLO-Block v5 00/15] Block replication for continuous checkpoints, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 02/15] allow writing to the backing file, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 01/15] docs: block replication's description, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 04/15] block: Parse "backing_reference" option to reference existing BDS, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 06/15] Don't allow a disk use backing reference target, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 03/15] Allow creating backup jobs when opening BDS, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 07/15] Add new block driver interface to connect/disconnect the remote target,
Wen Congyang <=
- [Qemu-block] [PATCH COLO-Block v5 09/15] Introduce a new -drive option to control whether to connect to remote target, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 08/15] NBD client: implement block driver interfaces to connect/disconnect NBD server, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 10/15] NBD client: connect to nbd server later, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 12/15] skip nbd_target when starting block replication, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 11/15] Add new block driver interfaces to control block replication, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 13/15] quorum: implement block driver interfaces for block replication, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 14/15] quorum: allow ignoring child errors, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 15/15] Implement new driver for block replication, Wen Congyang, 2015/05/21
- [Qemu-block] [PATCH COLO-Block v5 05/15] Backup: clear all bitmap when doing block checkpoint, Wen Congyang, 2015/05/21
- Re: [Qemu-block] [PATCH COLO-Block v5 00/15] Block replication for continuous checkpoints, Wen Congyang, 2015/05/21