| Message ID | 20170420075237.18219-18-famz@redhat.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/blockdev.c b/blockdev.c index 4927914..5831b95 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3223,6 +3223,9 @@ static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, } } if (backup->sync == MIRROR_SYNC_MODE_NONE) { + /* FIXME: block layer should really open target with BDRV_O_NO_BACKING + * and reuse source's backing chain, if they share one. */ + flags |= BDRV_O_UNSAFE_READ; source = bs; }
Signed-off-by: Fam Zheng <famz@redhat.com> --- blockdev.c | 3 +++ 1 file changed, 3 insertions(+)