common/punch

   1 ##/bin/bash
   2 #
   3 # Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
   4 #
   5 # This program is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU General Public License as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it would be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write the Free Software Foundation,
  16 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 #
  18 #
  19 # common functions for excersizing hole punches with extent size hints etc.
  20
  21 # source dmap_scratch_mount etc.
  22 . ./common/dmapi
  23
  24 _spawn_test_file() {
  25         echo "# spawning test file with $*"
  26         local blksize=$1
  27         local file_size=`expr $2 \* $blksize`
  28         local extent_size_hint=`expr $3 \* $blksize`
  29         local test_file=$4
  30         local reserve_space=$5
  31
  32         if [ $extent_size_hint -ne 0 ]; then
  33                 echo "+ setting extent size hint to $extent_size_hint"
  34                 $XFS_IO_PROG -f \
  35                 -c "extsize $extent_size_hint" \
  36                 $test_file
  37         fi
  38         # print extent size hint for $test_file
  39         $XFS_IO_PROG -f \
  40         -c "extsize" \
  41         $test_file
  42
  43         if [ "$reserve_space" == "noresv" ]; then
  44                 echo "+ not using resvsp at file creation"
  45                 $XFS_IO_PROG -f \
  46                 -c "truncate $file_size" \
  47                 $test_file
  48         else
  49                 $XFS_IO_PROG -f \
  50                 -c "truncate $file_size" \
  51                 -c "resvsp 0 $file_size" \
  52                 $test_file
  53         fi
  54 }
  55
  56 _do_punch() {
  57         echo "# punching with $*"
  58         # punch or bite the ear off $test_file to create a hole
  59         local blksize=$1
  60         local punch_offset=`expr $2 \* $blksize`
  61         local punch_size=`expr $3 \* $blksize`
  62         local punch_type=$4             # u for unresvsp, d for dm_punch
  63         local test_file=$5
  64
  65         if [ "$punch_type" == "u" ]; then
  66                 echo "+ hole punch using unresvsp"
  67                 $XFS_IO_PROG -f \
  68                 -c "unresvsp $punch_offset $punch_size" \
  69                 $test_file
  70         fi
  71         if [ "$punch_type" == "d" ]; then
  72                 echo "+ hole punch using dmapi punch_hole"
  73                 ${DMAPI_QASUITE1_DIR}cmd/punch_hole -o $punch_offset -l $punch_size \
  74                         ${SCRATCH_MNT}/$test_file
  75         fi
  76 }
  77
  78 _do_write() {
  79         echo "# writing with $*"
  80         local blksize=$1
  81         local write_offset=`expr $2 \* $blksize`
  82         local write_size=`expr $3 \* $blksize`
  83         local test_file=$4
  84
  85         $XFS_IO_PROG -f \
  86         -c "pwrite $write_offset $write_size" \
  87         $test_file >/dev/null
  88 }
  89
  90 _do_bmap() {
  91         echo "# showing file state $*"
  92         local test_file=$1
  93
  94         $XFS_IO_PROG -f \
  95         -c "bmap -vvp" \
  96         $test_file
  97 }
  98
  99 _test_punch() {
 100         echo "# testing $* ..."
 101         local blksize=$1
 102         # all points and sizes below are in terms of filesystem blocks
 103         local extsize_hint_blks=$2              # extent size hint in FS blocks, 0=do not set
 104         local file_size_blks=$3                 # the file size in blocks
 105         local punch_points_blks=( $4 )  # array of places to punch holes in the file
 106         local punch_sizes_blks=( $5 )   # array of size of each punch in blocks
 107         local punch_types=( $6  )               # array of u=unresvsp or d=dm_punch
 108         local write_points_blks=( $7 )  # array of places to pwrite in the file
 109         local write_sizes_blks=( $8 )   # array of size of each write
 110
 111         local punch_write_order=( $9 )  # array of punch/write operation order
 112                                                                         # e.g. "w p w w p" means: do 1st write...
 113                                                                         # then 1st punch, 2nd & 3rd write, 2nd punch
 114         local resvsp=${10}                              # if "noresv" then don't resvsp on file create
 115         local filename=punch_test_file
 116
 117         cd /
 118         umount $SCRATCH_MNT >/dev/null 2>&1
 119
 120         _scratch_mkfs_xfs -bsize=$blksize >/dev/null 2>&1 \
 121                 || _fail "mkfs failed"
 122
 123         local this_punch_type=""
 124         local dmap_punch_used=0
 125         for this_punch_type in "${punch_types[@]}"; do
 126                 [ "$this_punch_type" == "d" ] && dmap_punch_used=1
 127         done
 128         if [ $dmap_punch_used -ne 0 ]; then
 129                 # a punch type of dm_punch has been specified, do a dmapi mount
 130                 echo "+ mounting with dmapi enabled"
 131                 _dmapi_scratch_mount
 132         else
 133                 # only unresvsp punch type is used, just do a normal mount
 134                 _scratch_mount || _fail "mount failed"
 135         fi
 136
 137         cd $SCRATCH_MNT
 138
 139         # check a size is specified for each punch
 140         [ ${#punch_points_blks[*]} -eq ${#punch_sizes_blks[*]} ] \
 141                 || _fail "num punch points given does not equal num punch sizes"
 142
 143         # check a type is specified for each punch
 144         [ ${#punch_points_blks[*]} -eq ${#punch_types[*]} ] \
 145                 || _fail "num punch points given does not equal num punch types"
 146
 147         # check a size is specified for each write
 148         [ ${#write_points_blks[*]} -eq ${#write_sizes_blks[*]} ] \
 149                 || _fail "num write points given does not equal num write sizes"
 150
 151         # check punch_write_order operations match number of punches + writes
 152         local total_pw_operations=`expr ${#punch_points_blks[*]} + ${#write_points_blks[*]}`
 153         [ $total_pw_operations -eq ${#punch_write_order[*]} ] \
 154                 || _fail "punch_write_order ops doesn't match number of punches + writes"
 155
 156         # create the file and setup extent size hint
 157         _spawn_test_file $blksize $file_size_blks $extsize_hint_blks $filename $resvsp
 158
 159         # do the writes and punches
 160         local operation=""
 161         local punch_index=0
 162         local write_index=0
 163         for operation in "${punch_write_order[@]}"; do
 164                 if [ "$operation" == "p" ]; then
 165                         _do_punch $blksize ${punch_points_blks[$punch_index]} \
 166                                 ${punch_sizes_blks[$punch_index]} ${punch_types[$punch_index]} \
 167                                 $filename
 168                         punch_index=`expr $punch_index + 1`
 169                 fi
 170                 if [ "$operation" == "w" ]; then
 171                         _do_write $blksize ${write_points_blks[$write_index]} \
 172                                 ${write_sizes_blks[$write_index]} $filename
 173                         write_index=`expr $write_index + 1`
 174                 fi
 175                 sync
 176                 _do_bmap $filename              # print out the state of the file
 177         done
 178 }
 179
 180 _coalesce_extents()
 181 {
 182         awk -F: '
 183         {
 184                 range = $2;
 185                 type = $3;
 186
 187                 split(range, bounds, "[\\[ \\.\\]]");
 188                 low = bounds[3];
 189                 high = bounds[5];
 190
 191                 if (type != prev_type) {
 192                         if (prev_type != "")
 193                                 printf("%u]:%s\n", low - 1, prev_type);
 194                         printf("%u: [%u..", out_count++, low);
 195                         prev_type = type;
 196                 }
 197         }
 198         END {
 199                 if (prev_type != "")
 200                         printf("%u]:%s\n", high, prev_type);
 201         }'
 202 }
 203
 204 _filter_fiemap()
 205 {
 206         awk --posix '
 207                 $3 ~ /hole/ {
 208                         print $1, $2, $3;
 209                         next;
 210                 }
 211                 $5 ~ /0x[[:xdigit:]]*8[[:xdigit:]]{2}/ {
 212                         print $1, $2, "unwritten";
 213                         next;
 214                 }
 215                 $5 ~ /0x[[:xdigit:]]+/ {
 216                         print $1, $2, "data";
 217                 }' |
 218         _coalesce_extents
 219 }
 220
 221 # Filters fiemap output to only print the
 222 # file offset column and whether or not
 223 # it is an extent or a hole
 224 _filter_hole_fiemap()
 225 {
 226         awk --posix '
 227                 $3 ~ /hole/ {
 228                         print $1, $2, $3;
 229                         next;
 230                 }
 231                 $5 ~ /0x[[:xdigit:]]+/ {
 232                         print $1, $2, "extent";
 233                 }' |
 234         _coalesce_extents
 235 }
 236
 237 _filter_bmap()
 238 {
 239         awk '
 240                 $3 ~ /hole/ {
 241                         print $1, $2, $3;
 242                         next;
 243                 }
 244                 $7 ~ /10000/ {
 245                         print $1, $2, "unwritten";
 246                         next;
 247                 }
 248                 $7 ~ /00000/ {
 249                         print $1, $2, "data"
 250                 }' |
 251         _coalesce_extents
 252 }
 253
 254 die_now()
 255 {
 256         status=1
 257         exit
 258 }
 259
 260 # test the different corner cases for zeroing a range:
 261 #
 262 #       1. into a hole
 263 #       2. into allocated space
 264 #       3. into unwritten space
 265 #       4. hole -> data
 266 #       5. hole -> unwritten
 267 #       6. data -> hole
 268 #       7. data -> unwritten
 269 #       8. unwritten -> hole
 270 #       9. unwritten -> data
 271 #       10. hole -> data -> hole
 272 #       11. data -> hole -> data
 273 #       12. unwritten -> data -> unwritten
 274 #       13. data -> unwritten -> data
 275 #       14. data -> hole @ EOF
 276 #       15. data -> hole @ 0
 277 #       16. data -> cache cold ->hole
 278 #       17. data -> hole in single block file
 279 #
 280 # Test file is removed, created and sync'd between tests.
 281 #
 282 # Use -k flag to keep the file between tests.  This will
 283 # test the handling of pre-existing holes.
 284 #
 285 # Use the -d flag to not sync the file between tests.
 286 # This will test the handling of delayed extents
 287 #
 288 # Use the -u flag to not run unwritten tests.
 289 # This will eliminate some unnecessary information.
 290 #
 291 _test_generic_punch()
 292 {
 293
 294         remove_testfile=1
 295         sync_cmd="-c fsync"
 296         unwritten_tests=1
 297         OPTIND=1
 298         while getopts 'dku' OPTION
 299         do
 300                 case $OPTION in
 301                 k)      remove_testfile=
 302                 ;;
 303                 d)      sync_cmd=
 304                 ;;
 305                 u)      unwritten_tests=
 306                 ;;
 307                 ?)      echo Invalid flag
 308                 exit 1
 309                 ;;
 310                 esac
 311         done
 312         shift $(($OPTIND - 1))
 313
 314         alloc_cmd=$1
 315         punch_cmd=$2
 316         zero_cmd=$3     #if not testing zero just set to punch
 317         map_cmd=$4
 318         filter_cmd=$5
 319         testfile=$6
 320         multiple=1
 321
 322         #
 323         # If we are testing collapse range, we increare all the offsets of this
 324         # test by a factor of 4. We do this because unlike punch, collapse
 325         # range also decreases the size of file hence require bigger offsets.
 326         #
 327         if [ "$zero_cmd" == "fcollapse" ]; then
 328                 multiple=4
 329         fi
 330
 331         _4k="$((multiple * 4))k"
 332         _8k="$((multiple * 8))k"
 333         _12k="$((multiple * 12))k"
 334         _20k="$((multiple * 20))k"
 335
 336         # initial test state must be defined, otherwise the first test can fail
 337         # due ot stale file state left from previous tests.
 338         rm -f $testfile
 339
 340         echo "  1. into a hole"
 341         $XFS_IO_PROG -f -c "truncate $_20k" \
 342                 -c "$zero_cmd $_4k $_8k" \
 343                 -c "$map_cmd -v" $testfile | $filter_cmd
 344         [ $? -ne 0 ] && die_now
 345         _md5_checksum $testfile
 346
 347         echo "  2. into allocated space"
 348         if [ "$remove_testfile" ]; then
 349                 rm -f $testfile
 350         fi
 351         $XFS_IO_PROG -f -c "truncate $_20k" \
 352                 -c "pwrite 0 $_20k" $sync_cmd \
 353                 -c "$zero_cmd $_4k $_8k" \
 354                 -c "$map_cmd -v" $testfile | $filter_cmd
 355         [ $? -ne 0 ] && die_now
 356         _md5_checksum $testfile
 357
 358         if [ "$unwritten_tests" ]; then
 359                 echo "  3. into unwritten space"
 360                 if [ "$remove_testfile" ]; then
 361                         rm -f $testfile
 362                 fi
 363                 $XFS_IO_PROG -f -c "truncate $_20k" \
 364                         -c "$alloc_cmd 0 $_20k" \
 365                         -c "$zero_cmd $_4k $_8k" \
 366                         -c "$map_cmd -v" $testfile | $filter_cmd
 367                 [ $? -ne 0 ] && die_now
 368                 _md5_checksum $testfile
 369         fi
 370
 371         echo "  4. hole -> data"
 372         if [ "$remove_testfile" ]; then
 373                 rm -f $testfile
 374         fi
 375         $XFS_IO_PROG -f -c "truncate $_20k" \
 376                 -c "pwrite $_8k $_8k" $sync_cmd \
 377                 -c "$zero_cmd $_4k $_8k" \
 378                 -c "$map_cmd -v" $testfile | $filter_cmd
 379         [ $? -ne 0 ] && die_now
 380         _md5_checksum $testfile
 381
 382         if [ "$unwritten_tests" ]; then
 383                 echo "  5. hole -> unwritten"
 384                 if [ "$remove_testfile" ]; then
 385                         rm -f $testfile
 386                 fi
 387                 $XFS_IO_PROG -f -c "truncate $_20k" \
 388                         -c "$alloc_cmd $_8k $_8k" \
 389                         -c "$zero_cmd $_4k $_8k" \
 390                         -c "$map_cmd -v" $testfile | $filter_cmd
 391                 [ $? -ne 0 ] && die_now
 392                 _md5_checksum $testfile
 393         fi
 394
 395         echo "  6. data -> hole"
 396         if [ "$remove_testfile" ]; then
 397                 rm -f $testfile
 398         fi
 399         $XFS_IO_PROG -f -c "truncate $_20k" \
 400                 -c "pwrite 0 $_8k" $sync_cmd \
 401                  -c "$zero_cmd $_4k $_8k" \
 402                 -c "$map_cmd -v" $testfile | $filter_cmd
 403         [ $? -ne 0 ] && die_now
 404         _md5_checksum $testfile
 405
 406         if [ "$unwritten_tests" ]; then
 407                 echo "  7. data -> unwritten"
 408                 if [ "$remove_testfile" ]; then
 409                         rm -f $testfile
 410                 fi
 411                 $XFS_IO_PROG -f -c "truncate $_20k" \
 412                         -c "pwrite 0 $_8k" $sync_cmd \
 413                         -c "$alloc_cmd $_8k $_8k" \
 414                         -c "$zero_cmd $_4k $_8k" \
 415                         -c "$map_cmd -v" $testfile | $filter_cmd
 416                 [ $? -ne 0 ] && die_now
 417                 _md5_checksum $testfile
 418
 419                 echo "  8. unwritten -> hole"
 420                 if [ "$remove_testfile" ]; then
 421                         rm -f $testfile
 422                 fi
 423                 $XFS_IO_PROG -f -c "truncate $_20k" \
 424                         -c "$alloc_cmd 0 $_8k" \
 425                         -c "$zero_cmd $_4k $_8k" \
 426                         -c "$map_cmd -v" $testfile | $filter_cmd
 427                 [ $? -ne 0 ] && die_now
 428                 _md5_checksum $testfile
 429
 430                 echo "  9. unwritten -> data"
 431                 if [ "$remove_testfile" ]; then
 432                         rm -f $testfile
 433                 fi
 434                 $XFS_IO_PROG -f -c "truncate $_20k" \
 435                         -c "$alloc_cmd 0 $_8k" \
 436                         -c "pwrite $_8k $_8k" $sync_cmd \
 437                         -c "$zero_cmd $_4k $_8k" \
 438                         -c "$map_cmd -v" $testfile | $filter_cmd
 439                 [ $? -ne 0 ] && die_now
 440                 _md5_checksum $testfile
 441         fi
 442
 443         echo "  10. hole -> data -> hole"
 444         if [ "$remove_testfile" ]; then
 445                 rm -f $testfile
 446         fi
 447         $XFS_IO_PROG -f -c "truncate $_20k" \
 448                 -c "pwrite $_8k $_4k" $sync_cmd \
 449                 -c "$zero_cmd $_4k $_12k" \
 450                 -c "$map_cmd -v" $testfile | $filter_cmd
 451         [ $? -ne 0 ] && die_now
 452         _md5_checksum $testfile
 453
 454         echo "  11. data -> hole -> data"
 455         if [ "$remove_testfile" ]; then
 456                 rm -f $testfile
 457         fi
 458         $XFS_IO_PROG -f -c "truncate $_20k" \
 459                 -c "$alloc_cmd 0 $_20k" \
 460                 -c "pwrite 0 $_8k" \
 461                 -c "pwrite $_12k $_8k" $sync_cmd \
 462                 -c "$punch_cmd $_8k $_4k" \
 463                 -c "$zero_cmd $_4k $_12k" \
 464                 -c "$map_cmd -v" $testfile | $filter_cmd
 465         [ $? -ne 0 ] && die_now
 466         _md5_checksum $testfile
 467
 468         if [ "$unwritten_tests" ]; then
 469                 echo "  12. unwritten -> data -> unwritten"
 470                 if [ "$remove_testfile" ]; then
 471                         rm -f $testfile
 472                 fi
 473                 $XFS_IO_PROG -f -c "truncate $_20k" \
 474                         -c "$alloc_cmd 0 $_20k" \
 475                         -c "pwrite $_8k $_4k" $sync_cmd \
 476                         -c "$zero_cmd $_4k $_12k" \
 477                         -c "$map_cmd -v" $testfile | $filter_cmd
 478                 [ $? -ne 0 ] && die_now
 479                 _md5_checksum $testfile
 480
 481                 echo "  13. data -> unwritten -> data"
 482                 if [ "$remove_testfile" ]; then
 483                         rm -f $testfile
 484                 fi
 485                 $XFS_IO_PROG -f -c "truncate $_20k" \
 486                         -c "$alloc_cmd 0 $_20k" \
 487                         -c "pwrite 0k $_4k" $sync_cmd \
 488                         -c "pwrite $_12k $_8k" -c "fsync" \
 489                         -c "$zero_cmd $_4k $_12k" \
 490                         -c "$map_cmd -v" $testfile | $filter_cmd
 491                 [ $? -ne 0 ] && die_now
 492                 _md5_checksum $testfile
 493         fi
 494
 495         # Don't need to check EOF case for collapse range.
 496         # VFS layer return invalid error in this case,
 497         # So it is not a proper case for collapse range test of each local fs.
 498         if [ "$zero_cmd" != "fcollapse" ]; then
 499                 echo "  14. data -> hole @ EOF"
 500                 rm -f $testfile
 501                 $XFS_IO_PROG -f -c "truncate $_20k" \
 502                         -c "pwrite 0 $_20k" $sync_cmd \
 503                         -c "$zero_cmd $_12k $_8k" \
 504                         -c "$map_cmd -v" $testfile | $filter_cmd
 505                 [ $? -ne 0 ] && die_now
 506                 _md5_checksum $testfile
 507         fi
 508
 509         if [ "$zero_cmd" == "fcollapse" ]; then
 510                 echo "  14. data -> hole @ 0"
 511         else
 512                 echo "  15. data -> hole @ 0"
 513         fi
 514
 515         if [ "$remove_testfile" ]; then
 516                 rm -f $testfile
 517         fi
 518         $XFS_IO_PROG -f -c "truncate $_20k" \
 519                 -c "pwrite 0 $_20k" $sync_cmd \
 520                 -c "$zero_cmd 0 $_8k" \
 521                 -c "$map_cmd -v" $testfile | $filter_cmd
 522         [ $? -ne 0 ] && die_now
 523         _md5_checksum $testfile
 524
 525         # If zero_cmd is fcollpase, don't check unaligned offsets
 526         if [ "$zero_cmd" == "fcollapse" ]; then
 527                 return
 528         fi
 529
 530         echo "  16. data -> cache cold ->hole"
 531         if [ "$remove_testfile" ]; then
 532                 rm -f $testfile
 533                 rm -f $testfile.2
 534         else
 535                 cp $testfile $testfile.2
 536         fi
 537         $XFS_IO_PROG -f -c "truncate $_20k" \
 538                 -c "pwrite $_8k $_12k" -c "fsync" $testfile.2 \
 539                 > /dev/null
 540         $XFS_IO_PROG -f -c "truncate $_20k" \
 541                 -c "pwrite 0 $_20k" $sync_cmd \
 542                 -c "$zero_cmd 0k $_8k" \
 543                 -c "fadvise -d" \
 544                 -c "$map_cmd -v" $testfile | $filter_cmd
 545         diff $testfile $testfile.2
 546         [ $? -ne 0 ] && die_now
 547         rm -f $testfile.2
 548         _md5_checksum $testfile
 549
 550         # different file sizes mean we can't use md5sum to check the hole is
 551         # valid. Hence use hexdump to dump the contents and chop off the last
 552         # line of output that indicates the file size. We also have to fudge
 553         # the extent size as that will change with file size, too - that's what
 554         # the sed line noise does - it will always result in an output of [0..7]
 555         # so it matches 4k block size...
 556         echo "  17. data -> hole in single block file"
 557         if [ "$remove_testfile" ]; then
 558                 rm -f $testfile
 559         fi
 560         block_size=`stat -f $TEST_DIR | grep "Block size" | cut -d " " -f3`
 561         $XFS_IO_PROG -f -c "truncate $block_size" \
 562                 -c "pwrite 0 $block_size" $sync_cmd \
 563                 -c "$zero_cmd 128 128" \
 564                 -c "$map_cmd -v" $testfile | $filter_cmd | \
 565                          sed -e "s/\.\.[0-9]*\]/..7\]/"
 566         [ $? -ne 0 ] && die_now
 567         od -x $testfile | head -n -1
 568 }
 569
 570 _test_block_boundaries()
 571 {
 572
 573         remove_testfile=1
 574         sync_cmd="-c fsync"
 575         unwritten_tests=1
 576         OPTIND=1
 577         while getopts 'dk' OPTION
 578         do
 579                 case $OPTION in
 580                 k)      remove_testfile=
 581                 ;;
 582                 d)      sync_cmd=
 583                 ;;
 584                 ?)      echo Invalid flag
 585                 exit 1
 586                 ;;
 587                 esac
 588         done
 589         shift $(($OPTIND - 1))
 590
 591         bs=$1
 592         zero_cmd=$2
 593         filter_cmd=$3
 594         testfile=$4
 595
 596         # Block size plus 1
 597         bs_p1=$(($bs + 1))
 598         # Block size plus 2
 599         bs_p2=$(($bs + 2))
 600
 601         # Block size minus 1
 602         bs_m1=$(($bs - 1))
 603
 604         # Block size multiplied by 2
 605         bs_t2=$(($bs * 2))
 606
 607         # Block size divided by 2
 608         bs_d2=$(($bs / 2))
 609
 610         echo "zero 0, 1"
 611         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 612                            -c "pwrite -S 0x42 $bs $bs" \
 613                            -c "$zero_cmd 0 1" \
 614                            -c "pread -v 0 $bs_t2" \
 615                            $testfile | $filter_cmd
 616
 617         echo "zero 0, $bs_m1"
 618         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 619                            -c "pwrite -S 0x42 $bs $bs" \
 620                            -c "$zero_cmd 0 $bs_m1" \
 621                            -c "pread -v 0 $bs_t2" \
 622                            $testfile | $filter_cmd
 623
 624         echo "zero 0, $bs"
 625         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 626                            -c "pwrite -S 0x42 $bs $bs" \
 627                            -c "$zero_cmd 0 $bs" \
 628                            -c "pread -v 0 $bs_t2" \
 629                            $testfile | $filter_cmd
 630
 631         echo "zero 0, $bs_p1"
 632         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 633                            -c "pwrite -S 0x42 $bs $bs" \
 634                            -c "$zero_cmd 0 $bs_p1" \
 635                            -c "pread -v 0 $bs_t2" \
 636                            $testfile | $filter_cmd
 637
 638         echo "zero $bs_m1, $bs"
 639         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 640                            -c "pwrite -S 0x42 $bs $bs" \
 641                            -c "$zero_cmd $bs_m1 $bs" \
 642                            -c "pread -v 0 $bs_t2" \
 643                            $testfile | $filter_cmd
 644
 645         echo "zero $bs_m1, $bs_p1"
 646         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 647                            -c "pwrite -S 0x42 $bs $bs" \
 648                            -c "$zero_cmd $bs_m1 $bs_p1" \
 649                            -c "pread -v 0 $bs_t2" \
 650                            $testfile | $filter_cmd
 651
 652         echo "zero $bs_m1, $bs_p2"
 653         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 654                            -c "pwrite -S 0x42 $bs $bs" \
 655                            -c "$zero_cmd $bs_m1 $bs_p2" \
 656                            -c "pread -v 0 $bs_t2" \
 657                            $testfile | $filter_cmd
 658
 659
 660         echo "zero $bs, $bs"
 661         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 662                            -c "pwrite -S 0x42 $bs $bs" \
 663                            -c "$zero_cmd $bs $bs" \
 664                            -c "pread -v 0 $bs_t2" \
 665                            $testfile | $filter_cmd
 666
 667
 668         echo "zero $bs_d2 , $bs"
 669         $XFS_IO_PROG -f -t -c "pwrite -S 0x41 0 $bs" \
 670                            -c "pwrite -S 0x42 $bs $bs" \
 671                            -c "$zero_cmd $bs_d2 $bs" \
 672                            -c "pread -v 0 $bs_t2" \
 673                            $testfile | $filter_cmd
 674 }