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authorStefan Hajnoczi <stefanha@redhat.com>2013-06-26 14:11:58 +0200
committerKevin Wolf <kwolf@redhat.com>2013-07-15 09:49:00 +0200
commitde90930a0c45760e7523138fac57ff07312bf51d (patch)
tree168e123511084e83eb64b1484019379ee0a96ceb /hmp.c
parentb53169eae06d6cf6f512a8b1fdd5424a0a6aab85 (diff)
downloadqemu-arm-de90930a0c45760e7523138fac57ff07312bf51d.tar.gz
block: add drive_backup HMP command
Make "drive_backup" available on the HMP monitor: drive_backup [-n] [-f] device target [format] The -n flag requests QEMU to reuse the image found in new-image-file, instead of recreating it from scratch. The -f flag requests QEMU to copy the whole disk, so that the result does not need a backing file. Note that this flag *must* currently be passed since the other sync modes ('none' and 'top') have not been implemented yet. Requiring it ensures that "drive_backup" behaves like "drive_mirror". Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hmp.c')
-rw-r--r--hmp.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/hmp.c b/hmp.c
index 2daed430d6..dc4d8d453f 100644
--- a/hmp.c
+++ b/hmp.c
@@ -907,6 +907,34 @@ void hmp_drive_mirror(Monitor *mon, const QDict *qdict)
hmp_handle_error(mon, &errp);
}
+void hmp_drive_backup(Monitor *mon, const QDict *qdict)
+{
+ const char *device = qdict_get_str(qdict, "device");
+ const char *filename = qdict_get_str(qdict, "target");
+ const char *format = qdict_get_try_str(qdict, "format");
+ int reuse = qdict_get_try_bool(qdict, "reuse", 0);
+ int full = qdict_get_try_bool(qdict, "full", 0);
+ enum NewImageMode mode;
+ Error *errp = NULL;
+
+ if (!filename) {
+ error_set(&errp, QERR_MISSING_PARAMETER, "target");
+ hmp_handle_error(mon, &errp);
+ return;
+ }
+
+ if (reuse) {
+ mode = NEW_IMAGE_MODE_EXISTING;
+ } else {
+ mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
+ }
+
+ qmp_drive_backup(device, filename, !!format, format,
+ full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
+ true, mode, false, 0, false, 0, false, 0, &errp);
+ hmp_handle_error(mon, &errp);
+}
+
void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
{
const char *device = qdict_get_str(qdict, "device");