| #! /bin/bash |
| # FS QA Test No. btrfs/058 |
| # |
| # Regression test for a btrfs issue where we create a RO snapshot to use for |
| # a send operation which fails with a -ESTALE error, due to the presence of |
| # orphan inodes accessible through the snapshot's commit root but no longer |
| # present through the main root. |
| # |
| # This issue is fixed by the following linux kernel btrfs patch: |
| # |
| # Btrfs: update commit root on snapshot creation after orphan cleanup |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved. |
| # Author: Filipe Manana <fdmanana@suse.com> |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| #----------------------------------------------------------------------- |
| # |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| if [ ! -z $XFS_IO_PID ]; then |
| kill $XFS_IO_PID > /dev/null 2>&1 |
| fi |
| rm -fr $tmp |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _supported_os Linux |
| _require_scratch |
| _require_xfs_io_command "-T" |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| # Create a tmpfile file, write some data to it and leave it open, so that our |
| # main subvolume has an orphan inode item. |
| $XFS_IO_PROG -T $SCRATCH_MNT >>$seqres.full 2>&1 < <( |
| echo "pwrite 0 65536" |
| read |
| ) & |
| XFS_IO_PID=$! |
| |
| # Give it some time to the xfs_io process to create the tmpfile. |
| sleep 3 |
| |
| # With the tmpfile open, create a RO snapshot and use it for a send operation. |
| # The send operation used to fail with -ESTALE due to the presence of the |
| # orphan inode. |
| _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap |
| _run_btrfs_util_prog send -f /dev/null $SCRATCH_MNT/mysnap |
| |
| status=0 |
| exit |