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qmp: Allow block_resize to manipulate bs graph nodes.

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Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Benoît Canet 2014-01-23 21:31:37 +01:00 committed by Kevin Wolf
parent 212a5a8f09
commit 3b1dbd11a6
4 changed files with 25 additions and 8 deletions
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18
blockdev.c
View file

@ -1683,14 +1683,24 @@ int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
return 0;
}
void qmp_block_resize(const char *device, int64_t size, Error **errp)
void qmp_block_resize(bool has_device, const char *device,
bool has_node_name, const char *node_name,
int64_t size, Error **errp)
{
Error *local_err = NULL;
BlockDriverState *bs;
int ret;
bs = bdrv_find(device);
if (!bs) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
bs = bdrv_lookup_bs(has_device ? device : NULL,
has_node_name ? node_name : NULL,
&local_err);
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
return;
}
if (!bdrv_is_first_non_filter(bs)) {
error_set(errp, QERR_FEATURE_DISABLED, "resize");
return;
}

2
hmp.c
View file

@ -893,7 +893,7 @@ void hmp_block_resize(Monitor *mon, const QDict *qdict)
int64_t size = qdict_get_int(qdict, "size");
Error *errp = NULL;
qmp_block_resize(device, size, &errp);
qmp_block_resize(true, device, false, NULL, size, &errp);
hmp_handle_error(mon, &errp);
}

10
qapi-schema.json
View file

@ -1724,7 +1724,11 @@
#
# Resize a block image while a guest is running.
#
# @device: the name of the device to get the image resized
# Either @device or @node-name must be set but not both.
#
# @device: #optional the name of the device to get the image resized
#
# @node-name: #optional graph node name to get the image resized (Since 2.0)
#
# @size: new image size in bytes
#
@ -1733,7 +1737,9 @@
#
# Since: 0.14.0
##
{ 'command': 'block_resize', 'data': { 'device': 'str', 'size': 'int' }}
{ 'command': 'block_resize', 'data': { '*device': 'str',
'*node-name': 'str',
'size': 'int' }}
##
# @NewImageMode

3
qmp-commands.hx
View file

@ -931,7 +931,7 @@ EQMP
{
.name = "block_resize",
.args_type = "device:B,size:o",
.args_type = "device:s?,node-name:s?,size:o",
.mhandler.cmd_new = qmp_marshal_input_block_resize,
},
@ -944,6 +944,7 @@ Resize a block image while a guest is running.
Arguments:
- "device": the device's ID, must be unique (json-string)
- "node-name": the node name in the block driver state graph (json-string)
- "size": new size
Example: