4 # Exercise IO at large file offsets.
5 #-----------------------------------------------------------------------
6 # Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
8 # This program is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU General Public License as
10 # published by the Free Software Foundation.
12 # This program is distributed in the hope that it would be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write the Free Software Foundation,
19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #-----------------------------------------------------------------------
27 echo "QA output created by $seq"
32 status=1 # failure is the default!
38 umount $SCRATCH_DEV 2>/dev/null
40 trap "_cleanup; exit \$status" 0 1 2 3 15
42 # get standard environment, filters and checks
48 sed -e "s/$dbsize/1FSB/g" -e '/.* ops; /d'
53 sed -e "s/$1/<OFFSET>/g" | _filter_io
64 [ `$direct` ] && flags=-d
66 echo "Writing $bytes bytes, offset is $words (direct=$direct)" | _filter_io
67 echo "Writing $bytes bytes at $location $words (direct=$direct)" >>$seq.full
68 $XFS_IO_PROG -c "pwrite $offset 512" $flags $SCRATCH_MNT/$seq \
69 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
70 xfs_bmap -v $SCRATCH_MNT/$seq >>$seq.full
72 echo "Reading $bytes bytes (direct=$direct)" | _filter_io
73 echo "Reading $bytes bytes at $location (direct=$direct)" >>$seq.full
74 $XFS_IO_PROG -c "pread $offset $bytes" $flags $SCRATCH_MNT/$seq \
75 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
77 $XFS_IO_PROG -c "pread -v $offset $bytes" $flags $SCRATCH_MNT/$seq >>$seq.full
79 echo | tee -a $seq.full
82 # real QA test starts here
84 _supported_os IRIX Linux
86 [ -n "$XFS_IO_PROG" ] || _notrun "xfs_io executable not found"
89 _scratch_mkfs_xfs | _filter_mkfs 2>$tmp.mkfs
94 # Okay... filesize limit depends on blocksize, bits per long and
95 # also if large block device patch is enabled (can't dynamically
96 # check that, so use env var USE_LBD_PATCH to override default).
99 # We check from 1Tb below our guessed limit to 1Tb above it, and
100 # see what happens for each 1Tb increment along the way (first
101 # half should succeed, second half should fail to create a file).
102 # So, number calculated here is not the actual limit, its a ways
103 # above that, hopefully.
105 bitsperlong=`src/feature -w`
106 if [ "$bitsperlong" -eq 32 ]; then
107 upperbound=`expr $dbsize / 512`
108 # which is 8(TB) for 4K, 4(TB) for 2k, ... etc.
109 [ "$USE_LBD_PATCH" = yes ] && upperbound=16
110 # limited by page cache index when LBD patch onboard.
112 upperbound=`echo 8 \* 1024 \* 1024 | bc`
113 # 8 exabytes (working in TBs below)
116 # Step from (upperbound-1)(Tb) through (upperbound+1(Tb), &
117 # seeks/writes/reads on each boundary (using holey files) -
118 # 1byte back from the boundary, and 1FSB back from the same
119 # boundary (and stash xfs_bmap output), before moving onto
120 # each new test point.
122 $XFS_IO_PROG -c "truncate 0" -f $SCRATCH_MNT/$seq
124 oneTB=`echo 1024 \* 1024 \* 1024 \* 1024 | bc`
125 count=`expr $upperbound - 1`
126 upperbound=`expr $upperbound + 1`
128 while [ $count -le $upperbound ]
131 offset=`echo $oneTB \* $count | bc`
132 write_block $count "+0" $offset 512 false
133 offset=`echo $oneTB \* $count \- 1 | bc`
134 write_block $count "minus 1 byte" $offset 512 false
135 offset=`echo $oneTB \* $count \- $dbsize | bc`
136 write_block $count "minus 1FSB" $offset 512 false
137 write_block $count "minus 1FSB" $offset 1 false
140 offset=`echo $oneTB \* $count | bc`
141 write_block $count "+0" $offset $dbsize true
142 offset=`echo $oneTB \* $count \- 1 | bc`
143 write_block $count "minus 1FSB" $offset $dbsize true
145 echo === Iterating, `expr $upperbound - $count` remains