| #! /bin/bash |
| # FS QA Test No. 218 |
| # |
| # Basic defragmentation sanity tests |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2009 Eric Sandeen. 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 |
| #----------------------------------------------------------------------- |
| # |
| # creator |
| owner=sandeen@sandeen.net |
| |
| seq=`basename $0` |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| _cleanup_testdir |
| } |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| . ./common.defrag |
| |
| # real QA test starts here |
| _supported_fs xfs ext4 |
| _supported_os Linux |
| |
| _setup_testdir |
| # We require scratch so that we'll have free contiguous space |
| _require_scratch |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| _require_defrag |
| |
| fragfile=$SCRATCH_MNT/fragfile.$$ |
| |
| rm -f $fragfile |
| |
| # Craft some fragmented files, defrag them, check the result. |
| |
| echo "zero-length file:" | tee -a $seq.full |
| touch $fragfile |
| _defrag $fragfile |
| |
| echo "Sparse file (no blocks):" | tee -a $seq.full |
| xfs_io -F -f -c "truncate 1m" $fragfile |
| _defrag $fragfile |
| |
| echo "Contiguous file:" | tee -a $seq.full |
| dd if=/dev/zero of=$fragfile bs=4k count=4 &>/dev/null |
| _defrag $fragfile |
| |
| echo "Write backwards sync, but contiguous - should defrag to 1 extent" | tee -a $seq.full |
| for I in `seq 9 -1 0`; do |
| dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null |
| done |
| _defrag $fragfile |
| |
| echo "Write backwards sync leaving holes - defrag should do nothing" | tee -a $seq.full |
| for I in `seq 31 -2 0`; do |
| dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null |
| done |
| _defrag $fragfile |
| |
| echo "Write forwards sync leaving holes - defrag should do nothing" | tee -a $seq.full |
| for I in `seq 0 2 31`; do |
| dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null |
| done |
| _defrag $fragfile |
| |
| rm -f $seq.full |
| status=0 |
| exit |