| #! /bin/bash |
| # FS QA Test No. 009 |
| # |
| # Create and populate an ext4 filesystem, corrupt a block bitmap, then |
| # see how the kernel and e2fsck deal with it. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2015 Oracle, Inc. 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" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| #rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/attr |
| |
| # real QA test starts here |
| _supported_fs ext4 |
| _supported_os Linux |
| |
| _require_xfs_io_command "falloc" |
| _require_scratch |
| test -n "${FORCE_FUZZ}" || _require_scratch_ext4_crc |
| _require_attrs |
| |
| rm -f $seqres.full |
| TESTDIR="${SCRATCH_MNT}/scratchdir" |
| TESTFILE="${TESTDIR}/testfile" |
| |
| echo "+ create scratch fs" |
| _scratch_mkfs_ext4 > /dev/null 2>&1 |
| dumpe2fs -g "${SCRATCH_DEV}" > /dev/null 2>&1 || _notrun "dumpe2fs -g not supported" |
| nr_groups="$(dumpe2fs -g "${SCRATCH_DEV}" 2> /dev/null | tail -n 1 | cut -d : -f 1)" |
| |
| echo "+ mount fs image" |
| _scratch_mount |
| # abuse orlov allocator in the hopes that each bg ends up with some inodes |
| for i in `seq 1 $((nr_groups * 8))`; do |
| mkdir -p "${SCRATCH_MNT}/d_${i}" |
| done |
| blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")" |
| freeblks="$(stat -f -c '%a' "${SCRATCH_MNT}")" |
| $XFS_IO_PROG -f -c "falloc 0 $((blksz * freeblks))" "${SCRATCH_MNT}/bigfile2" >> $seqres.full |
| umount "${SCRATCH_MNT}" |
| |
| echo "+ make some files" |
| _scratch_mount |
| rm -rf "${SCRATCH_MNT}/bigfile2" |
| touch "${SCRATCH_MNT}/bigfile" |
| umount "${SCRATCH_MNT}" |
| |
| echo "+ check fs" |
| e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail" |
| |
| echo "+ corrupt image" |
| dumpe2fs -g "${SCRATCH_DEV}" 2>/dev/null | awk -F ':' '{if (int($5) > 0) {print $5}}' | while read blk; do |
| debugfs -w -n -R "zap_block -p 0xff ${blk}" "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "block bitmap fuzz failed" |
| done |
| |
| echo "+ mount image" |
| _scratch_mount |
| |
| echo "+ modify files" |
| b_bytes="$(stat -c '%B' "${SCRATCH_MNT}/bigfile")" |
| $XFS_IO_PROG -f -c "falloc 0 $((blksz * freeblks))" "${SCRATCH_MNT}/bigfile" >> $seqres.full 2> /dev/null |
| after="$(stat -c '%b' "${SCRATCH_MNT}/bigfile")" |
| echo "$((after * b_bytes))" lt "$((blksz * freeblks / 4))" >> $seqres.full |
| test "$((after * b_bytes))" -lt "$((blksz * freeblks / 4))" || _fail "falloc should fail" |
| umount "${SCRATCH_MNT}" |
| |
| echo "+ repair fs" |
| e2fsck -fy "${SCRATCH_DEV}" >> $seqres.full 2>&1 |
| |
| echo "+ mount image (2)" |
| _scratch_mount |
| |
| echo "+ modify files (2)" |
| $XFS_IO_PROG -f -c "falloc 0 $((blksz * freeblks))" "${SCRATCH_MNT}/bigfile" >> $seqres.full |
| umount "${SCRATCH_MNT}" |
| |
| echo "+ check fs (2)" |
| e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail" |
| |
| status=0 |
| exit |