##/bin/bash # # 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 # # # Functions useful for defragmentation tests # _require_defrag() { case "$FSTYP" in xfs) DEFRAG_PROG="$XFS_FSR_PROG" ;; ext4|ext4dev) DEFRAG_PROG="$E4DEFRAG_PROG" ;; btrfs) DEFRAG_PROG="$BTRFS_UTIL_PROG filesystem defragment" ;; *) _notrun "defragmentation not supported for fstype \"$FSTYP\"" ;; esac _require_command $DEFRAG_PROG _require_xfs_io_fiemap } _extent_count() { $XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l $XFS_IO_PROG -c "fiemap" $1 >> $seqres.full 2>&1 } # Defrag file, check it, and remove it. _defrag() { echo -n "Before: " _extent_count $1 CSUM_BEFORE=`md5sum $1` STAT_BEFORE=`stat -c "a: %x m: %y c: %z" $1` $DEFRAG_PROG -v $1 >> $seqres.full 2>&1 _scratch_remount STAT_AFTER=`stat -c "a: %x m: %y c: %z" $1` CSUM_AFTER=`md5sum $1` echo -n "After: " _extent_count $1 if [ "$CSUM_BEFORE" != "$CSUM_AFTER" ]; then _fail "file checksum changed post-defrag ($CSUM_BEFORE/$CSUM_AFTER)" fi if [ "$STAT_BEFORE" != "$STAT_AFTER" ]; then _fail "file timestamps changed post-defrag:\n$STAT_BEFORE\n$STAT_AFTER" fi rm -f $1 }