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-rw-r--r--qmp-commands.hx29
1 files changed, 22 insertions, 7 deletions
diff --git a/qmp-commands.hx b/qmp-commands.hx
index d2ba800d5e..2b52980cfc 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1270,11 +1270,22 @@ SQMP
transaction
-----------
-Atomically operate on one or more block devices. The only supported operations
-for now are drive-backup, internal and external snapshotting. A list of
-dictionaries is accepted, that contains the actions to be performed.
-If there is any failure performing any of the operations, all operations
-for the group are abandoned.
+Atomically operate on one or more block devices. Operations that are
+currently supported:
+
+ - drive-backup
+ - blockdev-backup
+ - blockdev-snapshot-sync
+ - blockdev-snapshot-internal-sync
+ - abort
+ - block-dirty-bitmap-add
+ - block-dirty-bitmap-clear
+
+Refer to the qemu/qapi-schema.json file for minimum required QEMU
+versions for these operations. A list of dictionaries is accepted,
+that contains the actions to be performed. If there is any failure
+performing any of the operations, all operations for the group are
+abandoned.
For external snapshots, the dictionary contains the device, the file to use for
the new snapshot, and the format. The default format, if not specified, is
@@ -1301,8 +1312,12 @@ it later with qemu-img or other command.
Arguments:
actions array:
- - "type": the operation to perform. The only supported
- value is "blockdev-snapshot-sync". (json-string)
+ - "type": the operation to perform (json-string). Possible
+ values: "drive-backup", "blockdev-backup",
+ "blockdev-snapshot-sync",
+ "blockdev-snapshot-internal-sync",
+ "abort", "block-dirty-bitmap-add",
+ "block-dirty-bitmap-clear"
- "data": a dictionary. The contents depend on the value
of "type". When "type" is "blockdev-snapshot-sync":
- "device": device name to snapshot (json-string)