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-rw-r--r--blockdev.c10
-rw-r--r--qapi/block-core.json3
-rw-r--r--qmp-commands.hx3
3 files changed, 5 insertions, 11 deletions
diff --git a/blockdev.c b/blockdev.c
index 46beafdfad..ccff1f7d05 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -3627,21 +3627,13 @@ void qmp_blockdev_mirror(bool has_job_id, const char *job_id,
Error **errp)
{
BlockDriverState *bs;
- BlockBackend *blk;
BlockDriverState *target_bs;
AioContext *aio_context;
BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN;
Error *local_err = NULL;
- blk = blk_by_name(device);
- if (!blk) {
- error_setg(errp, "Device '%s' not found", device);
- return;
- }
- bs = blk_bs(blk);
-
+ bs = qmp_get_root_bs(device, errp);
if (!bs) {
- error_setg(errp, "Device '%s' has no media", device);
return;
}
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 53f46b625c..bcb37db5af 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1277,7 +1277,8 @@
# @job-id: #optional identifier for the newly-created block job. If
# omitted, the device name will be used. (Since 2.7)
#
-# @device: the name of the device whose writes should be mirrored.
+# @device: The device name or node-name of a root node whose writes should be
+# mirrored.
#
# @target: the id or node-name of the block device to mirror to. This mustn't be
# attached to guest.
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 2077585dd3..034d51718c 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1747,7 +1747,8 @@ Arguments:
- "job-id": Identifier for the newly-created block job. If omitted,
the device name will be used. (json-string, optional)
-- "device": device name to operate on (json-string)
+- "device": The device name or node-name of a root node whose writes should be
+ mirrored (json-string)
- "target": device name to mirror to (json-string)
- "replaces": the block driver node name to replace when finished
(json-string, optional)