| #! /bin/bash |
| # FS QA Test No. btrfs/040 |
| # |
| # Regression test for btrfs incremental send issue where an rmdir |
| # instruction was sent multiple times for the same target directory. |
| # The number of times depended on the number of hardlinks against |
| # the same inode inside the target directory. That inode must have |
| # had the highest number of all the inodes that were children of the |
| # directory. This made the btrfs receive command fail immediately once |
| # it received the second rmdir instruction. |
| # |
| # This issue is fixed by the following linux kernel btrfs patch: |
| # |
| # Btrfs: send, don't send rmdir for same target multiple times |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2014 Filipe Manana. All Rights Reserved. |
| # |
| # 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=`mktemp -d` |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| 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_fssum |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| mkdir -p $SCRATCH_MNT/a/b/c |
| echo 'hello world' > $SCRATCH_MNT/a/b/c/hel.txt |
| echo 'ola mundo' > $SCRATCH_MNT/a/b/c/foo.txt |
| ln $SCRATCH_MNT/a/b/c/foo.txt $SCRATCH_MNT/a/b/c/bar.txt |
| ln $SCRATCH_MNT/a/b/c/foo.txt $SCRATCH_MNT/a/b/baz.txt |
| |
| # Filesystem looks like: |
| # |
| # . (ino 256) |
| # |-- a/ (ino 257) |
| # |-- b/ (ino 258) |
| # |-- c/ (ino 259) |
| # | |-- hel.txt (ino 260) |
| # | |-- foo.txt (ino 261) |
| # | |-- bar.txt (ino 261) |
| # | |
| # |-- baz.txt (ino 261) |
| |
| _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1 |
| |
| rm -f $SCRATCH_MNT/a/b/c/foo.txt |
| rm -f $SCRATCH_MNT/a/b/c/bar.txt |
| rm -f $SCRATCH_MNT/a/b/c/hel.txt |
| rmdir $SCRATCH_MNT/a/b/c |
| |
| # Filesystem now looks like: |
| # |
| # . (ino 256) |
| # |-- a/ (ino 257) |
| # |-- b/ (ino 258) |
| # |-- baz.txt (ino 261) |
| |
| _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2 |
| |
| run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1 |
| run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \ |
| $SCRATCH_MNT/mysnap2 |
| |
| _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1 |
| _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $tmp/2.snap \ |
| $SCRATCH_MNT/mysnap2 |
| |
| _scratch_unmount |
| _check_btrfs_filesystem $SCRATCH_DEV |
| |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT |
| run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full |
| |
| _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT |
| run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full |
| |
| _scratch_unmount |
| _check_btrfs_filesystem $SCRATCH_DEV |
| |
| status=0 |
| exit |