diff options
| author | Pavel Butsykin <pbutsykin@virtuozzo.com> | 2016-07-22 11:17:53 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-09-05 19:06:48 +0200 |
| commit | 3b7b12365953c507d50b52fbd3f1b46574c6946f (patch) | |
| tree | 81a40dbf444bb120f54095b7ccf173bde1d18925 /blockdev.c | |
| parent | 13b9414b5798539e2dbb87a570d96184fe21edf4 (diff) | |
blockdev-backup: added support for data compression
The idea is simple - backup is "written-once" data. It is written block
by block and it is large enough. It would be nice to save storage
space and compress it.
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Jeff Cody <jcody@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: John Snow <jsnow@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/blockdev.c b/blockdev.c index f5857d0187..97062e33c3 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3254,6 +3254,9 @@ void do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, Error **errp) if (!backup->has_job_id) { backup->job_id = NULL; } + if (!backup->has_compress) { + backup->compress = false; + } bs = qmp_get_root_bs(backup->device, errp); if (!bs) { @@ -3280,8 +3283,8 @@ void do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, Error **errp) } } backup_start(backup->job_id, bs, target_bs, backup->speed, backup->sync, - NULL, false, backup->on_source_error, backup->on_target_error, - block_job_cb, bs, txn, &local_err); + 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); } |