David Disseldorp
2014-May-07 12:33 UTC
[PATCH] btrfs/035: update clone test to expect EOPNOTSUPP
With kernel commit 00fdf13a2e9f313a044288aa59d3b8ec29ff904a, the first clone-range overwrite attempt now fails with EOPNOTSUPP, rather than tripping a Btrfs BUG_ON(). This test now trips a new Btrfs bug, in which EIO is returned for subsequent reads following the second clone range ioctl. Signed-off-by: David Disseldorp <ddiss@suse.de> --- tests/btrfs/035 | 11 +++++++++++ tests/btrfs/035.out | 5 +++++ 2 files changed, 16 insertions(+) diff --git a/tests/btrfs/035 b/tests/btrfs/035 index 6808179..c9530f6 100755 --- a/tests/btrfs/035 +++ b/tests/btrfs/035 @@ -57,21 +57,32 @@ src_str="aaaaaaaaaa" echo -n "$src_str" > $SCRATCH_MNT/src $CLONER_PROG $SCRATCH_MNT/src $SCRATCH_MNT/src.clone1 +cat $SCRATCH_MNT/src.clone1 +echo src_str="bbbbbbbbbbcccccccccc" echo -n "$src_str" > $SCRATCH_MNT/src $CLONER_PROG $SCRATCH_MNT/src $SCRATCH_MNT/src.clone2 +cat $SCRATCH_MNT/src.clone2 +echo +# Prior to kernel commit 00fdf13a2e9f313a044288aa59d3b8ec29ff904a, this clone +# resulted in a BUG_ON in __btrfs_drop_extents(). The kernel now returns +# EOPNOTSUPP up to userspace. snap_src_sz=`ls -lah $SCRATCH_MNT/src.clone1 | awk '{print $5}'` echo "attempting ioctl (src.clone1 src)" $CLONER_PROG -s 0 -d 0 -l ${snap_src_sz} \ $SCRATCH_MNT/src.clone1 $SCRATCH_MNT/src +cat $SCRATCH_MNT/src +echo snap_src_sz=`ls -lah $SCRATCH_MNT/src.clone2 | awk '{print $5}'` echo "attempting ioctl (src.clone2 src)" $CLONER_PROG -s 0 -d 0 -l ${snap_src_sz} \ $SCRATCH_MNT/src.clone2 $SCRATCH_MNT/src +# BUG: subsequent access attempts currently result in EIO... +cat $SCRATCH_MNT/src status=0 ; exit diff --git a/tests/btrfs/035.out b/tests/btrfs/035.out index f86cadf..0ea2c4f 100644 --- a/tests/btrfs/035.out +++ b/tests/btrfs/035.out @@ -1,3 +1,8 @@ QA output created by 035 +aaaaaaaaaa +bbbbbbbbbbcccccccccc attempting ioctl (src.clone1 src) +clone failed: Operation not supported +bbbbbbbbbbcccccccccc attempting ioctl (src.clone2 src) +bbbbbbbbbbcccccccccc -- 1.8.4.5 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs