4 # Exercise IO at large file offsets.
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42 echo "QA output created by $seq"
47 status=1 # failure is the default!
53 umount $SCRATCH_DEV 2>/dev/null
55 trap "_cleanup; exit \$status" 0 1 2 3 15
57 # get standard environment, filters and checks
63 sed -e "s/$dbsize/1FSB/g" -e '/.* ops; /d'
68 sed -e "s/$1/<OFFSET>/g" | _filter_io
73 sed -e "s/[0-9/.]* bytes, [0-9] ops\; [0-9/.]* sec ([0-9/.]* [MKiBbytes]*\/sec and [0-9/.]* ops\/sec)/XXX bytes, X ops\; XXX sec (X YYY\/sec and XXX ops\/sec/"
84 [ `$direct` ] && flags=-d
86 echo "Writing $bytes bytes, offset is $words (direct=$direct)" | _filter_io
87 echo "Writing $bytes bytes at $location $words (direct=$direct)" >>$seq.full
88 $XFS_IO_PROG -c "pwrite $offset 512" $flags $SCRATCH_MNT/$seq \
89 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
90 xfs_bmap -v $SCRATCH_MNT/$seq >>$seq.full
92 echo "Reading $bytes bytes (direct=$direct)" | _filter_io
93 echo "Reading $bytes bytes at $location (direct=$direct)" >>$seq.full
94 $XFS_IO_PROG -c "pread $offset $bytes" $flags $SCRATCH_MNT/$seq \
95 2>&1 | _filter_off $offset | _filter_xfs_io | tee -a $seq.full
97 $XFS_IO_PROG -c "pread -v $offset $bytes" $flags $SCRATCH_MNT/$seq >>$seq.full
99 echo | tee -a $seq.full
102 # real QA test starts here
104 _supported_os IRIX Linux
106 [ -n "$XFS_IO_PROG" ] || _notrun "xfs_io executable not found"
109 _scratch_mkfs_xfs | _filter_mkfs 2>$tmp.mkfs
114 # Okay... filesize limit depends on blocksize, bits per long and
115 # also if large block device patch is enabled (can't dynamically
116 # check that, so use env var USE_LBD_PATCH to override default).
119 # We check from 1Tb below our guessed limit to 1Tb above it, and
120 # see what happens for each 1Tb increment along the way (first
121 # half should succeed, second half should fail to create a file).
122 # So, number calculated here is not the actual limit, its a ways
123 # above that, hopefully.
125 bitsperlong=`src/feature -w`
126 if [ "$bitsperlong" -eq 32 ]; then
127 upperbound=`expr $dbsize / 512`
128 # which is 8(TB) for 4K, 4(TB) for 2k, ... etc.
129 [ "$USE_LBD_PATCH" = yes ] && upperbound=16
130 # limited by page cache index when LBD patch onboard.
132 upperbound=`echo 8 \* 1024 \* 1024 | bc`
133 # 8 exabytes (working in TBs below)
136 # Step from (upperbound-1)(Tb) through (upperbound+1(Tb), &
137 # seeks/writes/reads on each boundary (using holey files) -
138 # 1byte back from the boundary, and 1FSB back from the same
139 # boundary (and stash xfs_bmap output), before moving onto
140 # each new test point.
142 $XFS_IO_PROG -c "truncate 0" -f $SCRATCH_MNT/$seq
144 oneTB=`echo 1024 \* 1024 \* 1024 \* 1024 | bc`
145 count=`expr $upperbound - 1`
146 upperbound=`expr $upperbound + 1`
148 while [ $count -le $upperbound ]
151 offset=`echo $oneTB \* $count | bc`
152 write_block $count "+0" $offset 512 false
153 offset=`echo $oneTB \* $count \- 1 | bc`
154 write_block $count "minus 1 byte" $offset 512 false
155 offset=`echo $oneTB \* $count \- $dbsize | bc`
156 write_block $count "minus 1FSB" $offset 512 false
157 write_block $count "minus 1FSB" $offset 1 false
160 offset=`echo $oneTB \* $count | bc`
161 write_block $count "+0" $offset $dbsize true
162 offset=`echo $oneTB \* $count \- 1 | bc`
163 write_block $count "minus 1FSB" $offset $dbsize true
165 echo === Iterating, `expr $upperbound - $count` remains
168 count=`expr $count + 1`