@@ -3277,6 +3277,9 @@ void do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, Error **errp)
if (!backup->has_on_target_error) {
backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT;
}
+ if (!backup->has_compress) {
+ backup->compress = false;
+ }
blk = blk_by_name(backup->device);
if (!blk) {
@@ -3309,9 +3312,9 @@ void do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, Error **errp)
goto out;
}
}
- backup_start(bs, target_bs, backup->speed, backup->sync, NULL, false,
- backup->on_source_error, backup->on_target_error, block_job_cb,
- bs, txn, &local_err);
+ backup_start(bs, target_bs, backup->speed, backup->sync, NULL,
+ backup->compress, backup->on_source_error,
+ backup->on_target_error, block_job_cb, bs, txn, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
}
@@ -926,6 +926,9 @@
# @speed: #optional the maximum speed, in bytes per second. The default is 0,
# for unlimited.
#
+# @compress: #optional true to compress data, if the target format supports it.
+# (default: false) (since 2.7)
+#
# @on-source-error: #optional the action to take on an error on the source,
# default 'report'. 'stop' and 'enospc' can only be used
# if the block device supports io-status (see BlockInfo).
@@ -944,6 +947,7 @@
'data': { 'device': 'str', 'target': 'str',
'sync': 'MirrorSyncMode',
'*speed': 'int',
+ '*compress': 'bool',
'*on-source-error': 'BlockdevOnError',
'*on-target-error': 'BlockdevOnError' } }
@@ -1269,7 +1269,7 @@ EQMP
{
.name = "blockdev-backup",
- .args_type = "sync:s,device:B,target:B,speed:i?,"
+ .args_type = "sync:s,device:B,target:B,speed:i?,compress:b?,"
"on-source-error:s?,on-target-error:s?",
.mhandler.cmd_new = qmp_marshal_blockdev_backup,
},
@@ -1291,6 +1291,8 @@ Arguments:
sectors allocated in the topmost image, or "none" to only replicate
new I/O (MirrorSyncMode).
- "speed": the maximum speed, in bytes per second (json-int, optional)
+- "compress": true to compress data, if the target format supports it.
+ (json-bool, optional, default false)
- "on-source-error": the action to take on an error on the source, default
'report'. 'stop' and 'enospc' can only be used
if the block device supports io-status.