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#! /bin/sh
# FS QA Test No. 042
#
# xfs_fsr QA tests
# create a large fragmented file and check that xfs_fsr doesn't corrupt
# it or the other contents of the filesystem
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 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.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write the Free Software Foundation, Inc., 59
# Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
# Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
# Mountain View, CA 94043, or:
#
# http://www.sgi.com
#
# For further information regarding this notice, see:
#
# http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
#-----------------------------------------------------------------------
#
set +x
# creator
owner=ajag@sgi.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
_cleanup()
{
umount $SCRATCH_MNT
rm -f $tmp.*
}
trap "_cleanup ; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
# real QA test starts here
_supported_fs xfs
_supported_os IRIX Linux
_require_scratch
_cull_files()
{
perl -e "\$manifest=\"$tmp.manifest\";" -e '
open MANIFEST, $manifest;
@in = <MANIFEST>;
close MANIFEST;
open MANIFEST, ">$manifest";
for ($i = 0; $i < @in; $i++) {
if (($i+1) % 2 == 0) {
# remove every second file
chomp($s = $in[$i]);
if (unlink($s) != 1) {
print "_cull_files: could not delete \"$s\"\n";
exit(1);
}
}
else {
print MANIFEST $in[$i];
}
}
close MANIFEST;
exit(0);'
}
# create a large contiguous file using dd
# use fill2fs to fill the filesystem up with 4k sized files
# fill any remaining space using dd
# delete every second 4k file - remaining free space should be fragmented
# use fill2 to generate a very large file - run it until it fails producing a truncated file
# delete the dd-generated file
# run xfs_fsr on the filesystem
# check checksums for remaining files
# create 3 minimum sized (16Mb) allocation groups
# xfs_repair is going to need three to verify the superblock
rm -f $seq.full
_do_die_on_error=message_only
echo -n "Make a 48 megabyte filesystem on SCRATCH_DEV and mount... "
_do "_scratch_mkfs_xfs -dsize=48m,agcount=3"
_do "_scratch_mount"
echo "done"
echo -n "Reserve 16 1Mb unfragmented regions... "
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
do
_do "dd if=/dev/zero of=$SCRATCH_MNT/hole$i bs=4096 count=256"
_do "dd if=/dev/zero of=$SCRATCH_MNT/space$i bs=4096 count=1"
_do "xfs_bmap -v $SCRATCH_MNT/hole$i"
done
echo "done"
# set up filesystem
echo -n "Fill filesystem with 4k files, generate manifest... "
fill_options="--verbose --seed=0 --filesize=4096 --stddev=0 --sync=1000000"
_do "src/fill2fs $fill_options --dir=$SCRATCH_MNT/fill --list=- > $tmp.manifest"
echo "done"
# flush the filesystem - make sure there is no space "lost" to pre-allocation
_do "umount $SCRATCH_MNT"
_do "_scratch_mount"
echo -n "Use up any further available space using dd... "
_do "dd if=/dev/zero of=$SCRATCH_MNT/pad bs=4096"
echo "done"
# create fragmented file
_do "Delete every second file" "_cull_files"
echo -n "Create one very large file... "
_do "src/fill2 -d nbytes=16000000,file=$SCRATCH_MNT/fragmented"
echo "done"
_do "xfs_bmap -v $SCRATCH_MNT/fragmented"
_do "sum $SCRATCH_MNT/fragmented >$tmp.sum1"
_do "Remove other files" "rm -rf $SCRATCH_MNT/{pad,hole*}"
# defragment
_do "Run xfs_fsr on filesystem" "$XFS_FSR_PROG -v $SCRATCH_DEV"
_do "xfs_bmap -v $SCRATCH_MNT/fragmented"
_do "Check 4k files" "src/fill2fs_check $tmp.manifest"
# check
echo -n "Check large file... "
_do "sum $SCRATCH_MNT/fragmented >$tmp.sum2"
if ! _do "diff $tmp.sum1 $tmp.sum2"; then
echo "fail"
echo "File is corrupt/missing after fsr. Test failed see $seq.full"
status=1; exit
fi
echo "done"
_do "Checking filesystem" "_check_scratch_fs"
# success, all done
echo "xfs_fsr tests passed."
status=0 ; exit
|
