block: Add blockdev-backup to transaction

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1418899027-8445-4-git-send-email-famz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
diff --git a/qapi-schema.json b/qapi-schema.json
index 47d99cf..fbfc52f 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -1260,11 +1260,13 @@
 # drive-backup since 1.6
 # abort since 1.6
 # blockdev-snapshot-internal-sync since 1.7
+# blockdev-backup since 2.3
 ##
 { 'union': 'TransactionAction',
   'data': {
        'blockdev-snapshot-sync': 'BlockdevSnapshot',
        'drive-backup': 'DriveBackup',
+       'blockdev-backup': 'BlockdevBackup',
        'abort': 'Abort',
        'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternal'
    } }