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#! /bin/sh
# XFS QA Test No. 042
# $Id: 042,v 1.2 2000/09/27 00:24:22 ajag Exp ajag $
#
# fsr.xfs QA tests
# create a large fragmented file and check that fsr.xfs doesn't corrupt
# it or the other contents of the filesystem
#
#-----------------------------------------------------------------------
# Copyright (c) 2000 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@melbourne.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

_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;'
}

_do()
{
    if [ $# -ne 1 ]; then echo "Usage: _do \"cmd\"" 1>&2 ; exit 1; fi
    echo "*** $1" >>$seq.full
    eval "$1 2>&1 | _fix_malloc >>$seq.full"
}


# 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 fsr.xfs 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
echo -n "Make a 48 megabyte filesystem on SCRATCH_DEV and mount... "
_do "mkfs -t xfs -d size=48m,agcount=3 -l internal -f $SCRATCH_DEV"
_do "mount -t xfs $SCRATCH_DEV $SCRATCH_MNT"
echo "done"
echo -n "Reserve 16 1Mb unfragmented regions... "
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
do
    _do "dd if=/dev/zero of=$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 $SCRATCH_MNT/hole$i"
done
echo "done" 
echo -n "Fill filesystem with 4k files, generate manifest... "
_do "(src/fill2fs --verbose --dir=$SCRATCH_MNT/fill --seed=0 --filesize=4096 --stddev=0 --list=$tmp.manifest)"
echo "done"
echo -n "Use up any further available space using dd... "
_do "dd if=/dev/zero of=$SCRATCH_MNT/pad bs=4096"
echo "done"
echo -n "Delete every second file... "
if ! _do "_cull_files"; then
    echo "fail"
    echo "Could not cull files. Test failed see $seq.full"
    status=1; exit
fi
echo "done"
echo -n "Create one very large file... "
_do "src/fill2 -d nbytes=16000000,file=$SCRATCH_MNT/fragmented"
echo "done"
_do "xfs_bmap $SCRATCH_MNT/fragmented"
_do "(sum $SCRATCH_MNT/fragmented >$tmp.sum1)"
echo -n "Remove other files... "
_do "rm -rf $SCRATCH_MNT/{pad,hole*}"
echo "done"

# flush everything
_do "umount $SCRATCH_MNT"
_do "mount -t xfs $SCRATCH_DEV $SCRATCH_MNT"

echo -n "Run fsr.xfs on filesystem... "
_do "fsr.xfs -v $SCRATCH_DEV"
echo "done"
_do "xfs_bmap $SCRATCH_MNT/fragmented"

echo -n "Check 4k files... "
if ! _do "src/fill2fs_check $tmp.manifest"; then
    echo "fail"
    echo "4k file is corrupt/missing after fsr. Test failed see $seq.full"
    status=1; exit
fi
echo "done"
echo -n "Check large file... "
_do "(sum $SCRATCH_MNT/fragmented >$tmp.sum2)"
if ! 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"

echo -n "Checking filesystem... "
_check_fs $SCRATCH_DEV
echo "done"
# success, all done
echo "fsr.xfs tests passed."
status=0 ; exit