[Qemu-devel] [PATCH] add reopen to blockdev-transaction

[Federico Simoncelli <fsimonce@redhat.com>]

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
---
 blockdev.c       |    8 ++++++++
 qapi-schema.json |   12 ++++++++++++
 qmp-commands.hx  |    6 +++++-
 3 files changed, 25 insertions(+), 1 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 56da5c9..36fe07c 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -798,6 +798,14 @@ void qmp_blockdev_transaction(BlockdevActionList *dev_list,
                                          dev_info->mirror->target);
             break;
 
+        case BLOCKDEV_ACTION_KIND_REOPEN:
+            device = dev_info->reopen->device;
+            if (dev_info->format->has_format) {
+                format = dev_info->reopen->format;
+            }
+            new_source = g_strdup(dev_info->reopen->target);
+            break;
+
         default:
             abort();
         }
diff --git a/qapi-schema.json b/qapi-schema.json
index b33875d..17f7548 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -1145,6 +1145,17 @@
 { 'type': 'BlockdevMirror',
   'data': { 'device': 'str', 'target': 'str', '*format': 'str',
             '*reuse': 'bool' } }
+##
+# @BlockdevReopen
+#
+# @device: the name of the device to reopen.
+#
+# @target: the target of the new image.
+#
+# @format: #optional the format of the new image, default is 'qcow2'.
+##
+{ 'type': 'BlockdevReopen',
+  'data': { 'device': 'str', 'target': 'str', '*format': 'str' } }
 
 ##
 # @BlockdevAction
@@ -1156,6 +1167,7 @@
   'data': {
        'snapshot': 'BlockdevSnapshot',
        'mirror': 'BlockdevMirror',
+       'reopen': 'BlockdevReopen',
    } }
 
 ##
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 50ac5a0..317c448 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -720,7 +720,7 @@ Arguments:
 
 actions array:
     - "type": the operation to perform.  The only supported
-      values are "snapshot" and "mirror". (json-string)
+      values are "snapshot", "mirror" and "reopen". (json-string)
     - "data": a dictionary.  The contents depend on the value
       of "type".  When "type" is "snapshot":
       - "device": device name to snapshot (json-string)
@@ -734,6 +734,10 @@ actions array:
       - "format": format of new image (json-string, optional)
       - "reuse": whether QEMU should look for an existing image file
         (json-bool, optional, default false)
+      When "type" is "reopen":
+      - "device": device name to reopen (json-string)
+      - "target": name of destination image file (json-string)
+      - "format": format of new image (json-string, optional)
 
 Example:
 
-- 
1.7.1