4 # Exercise IO at large file offsets.
6 #-----------------------------------------------------------------------
7 # Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
8 #-----------------------------------------------------------------------
14 echo "QA output created by $seq"
19 status=1 # failure is the default!
25 umount $SCRATCH_DEV 2>/dev/null
27 trap "_cleanup; exit \$status" 0 1 2 3 15
29 # get standard environment, filters and checks
35 sed -e "s/$dbsize/1FSB/g" -e '/.* ops; /d'
40 sed -e "s/$1/<OFFSET>/g" | _filter_io
45 sed -e "s/[0-9/.]* bytes, [0-9] ops\; [0-9/.]* sec ([0-9/.]* [MKiBbytes]*\/sec and [0-9/.]* ops\/sec)/XXX bytes, X ops\; XXX sec (X YYY\/sec and XXX ops\/sec/"
56 [ `$direct` ] && flags=-d
58 echo "Writing $bytes bytes, offset is $words (direct=$direct)" | _filter_io
59 echo "Writing $bytes bytes at $location $words (direct=$direct)" >>$seq.full
60 $XFS_IO_PROG -c "pwrite $offset 512" $flags $SCRATCH_MNT/$seq \
61 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
62 xfs_bmap -v $SCRATCH_MNT/$seq >>$seq.full
64 echo "Reading $bytes bytes (direct=$direct)" | _filter_io
65 echo "Reading $bytes bytes at $location (direct=$direct)" >>$seq.full
66 $XFS_IO_PROG -c "pread $offset $bytes" $flags $SCRATCH_MNT/$seq \
67 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
69 $XFS_IO_PROG -c "pread -v $offset $bytes" $flags $SCRATCH_MNT/$seq >>$seq.full
71 echo | tee -a $seq.full
74 # real QA test starts here
76 _supported_os IRIX Linux
78 [ -n "$XFS_IO_PROG" ] || _notrun "xfs_io executable not found"
81 _scratch_mkfs_xfs | _filter_mkfs 2>$tmp.mkfs
86 # Okay... filesize limit depends on blocksize, bits per long and
87 # also if large block device patch is enabled (can't dynamically
88 # check that, so use env var USE_LBD_PATCH to override default).
91 # We check from 1Tb below our guessed limit to 1Tb above it, and
92 # see what happens for each 1Tb increment along the way (first
93 # half should succeed, second half should fail to create a file).
94 # So, number calculated here is not the actual limit, its a ways
95 # above that, hopefully.
97 bitsperlong=`src/feature -w`
98 if [ "$bitsperlong" -eq 32 ]; then
99 upperbound=`expr $dbsize / 512`
100 # which is 8(TB) for 4K, 4(TB) for 2k, ... etc.
101 [ "$USE_LBD_PATCH" = yes ] && upperbound=16
102 # limited by page cache index when LBD patch onboard.
104 upperbound=`echo 8 \* 1024 \* 1024 | bc`
105 # 8 exabytes (working in TBs below)
108 # Step from (upperbound-1)(Tb) through (upperbound+1(Tb), &
109 # seeks/writes/reads on each boundary (using holey files) -
110 # 1byte back from the boundary, and 1FSB back from the same
111 # boundary (and stash xfs_bmap output), before moving onto
112 # each new test point.
114 $XFS_IO_PROG -c "truncate 0" -f $SCRATCH_MNT/$seq
116 oneTB=`echo 1024 \* 1024 \* 1024 \* 1024 | bc`
117 count=`expr $upperbound - 1`
118 upperbound=`expr $upperbound + 1`
120 while [ $count -le $upperbound ]
123 offset=`echo $oneTB \* $count | bc`
124 write_block $count "+0" $offset 512 false
125 offset=`echo $oneTB \* $count \- 1 | bc`
126 write_block $count "minus 1 byte" $offset 512 false
127 offset=`echo $oneTB \* $count \- $dbsize | bc`
128 write_block $count "minus 1FSB" $offset 512 false
129 write_block $count "minus 1FSB" $offset 1 false
132 offset=`echo $oneTB \* $count | bc`
133 write_block $count "+0" $offset $dbsize true
134 offset=`echo $oneTB \* $count \- 1 | bc`
135 write_block $count "minus 1FSB" $offset $dbsize true
137 echo === Iterating, `expr $upperbound - $count` remains
140 count=`expr $count + 1`