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1.1 ! root 1: #!/bin/bash ! 2: # ! 3: # Copyright (C) 2009 Red Hat, Inc. ! 4: # ! 5: # This program is free software; you can redistribute it and/or modify ! 6: # it under the terms of the GNU General Public License as published by ! 7: # the Free Software Foundation; either version 2 of the License, or ! 8: # (at your option) any later version. ! 9: # ! 10: # This program is distributed in the hope that it will be useful, ! 11: # but WITHOUT ANY WARRANTY; without even the implied warranty of ! 12: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 13: # GNU General Public License for more details. ! 14: # ! 15: # You should have received a copy of the GNU General Public License ! 16: # along with this program. If not, see <http://www.gnu.org/licenses/>. ! 17: # ! 18: ! 19: function do_is_allocated() { ! 20: local start=$1 ! 21: local size=$(( $2 / 512)) ! 22: local step=$3 ! 23: local count=$4 ! 24: ! 25: for i in `seq 1 $count`; do ! 26: echo alloc $(( start + (i - 1) * step )) $size ! 27: done ! 28: } ! 29: ! 30: function is_allocated() { ! 31: do_is_allocated "$@" | $QEMU_IO $TEST_IMG | _filter_qemu_io ! 32: } ! 33: ! 34: function do_io() { ! 35: local op=$1 ! 36: local start=$2 ! 37: local size=$3 ! 38: local step=$4 ! 39: local count=$5 ! 40: local pattern=$6 ! 41: ! 42: echo === IO: pattern $pattern >&2 ! 43: for i in `seq 1 $count`; do ! 44: echo $op -P $pattern $(( start + (i - 1) * step )) $size ! 45: done ! 46: } ! 47: ! 48: function io_pattern() { ! 49: do_io "$@" | $QEMU_IO $TEST_IMG | _filter_qemu_io ! 50: } ! 51: ! 52: function io() { ! 53: local start=$2 ! 54: local pattern=$(( (start >> 9) % 256 )) ! 55: ! 56: do_io "$@" $pattern | $QEMU_IO $TEST_IMG | _filter_qemu_io ! 57: } ! 58: ! 59: function io_zero() { ! 60: do_io "$@" 0 | $QEMU_IO $TEST_IMG | _filter_qemu_io ! 61: } ! 62: ! 63: function io_test() { ! 64: local op=$1 ! 65: local offset=$2 ! 66: local cluster_size=$3 ! 67: ! 68: local num_large=$4 ! 69: local num_medium=$((num_large * num_large)) ! 70: local num_small=$((4 * num_medium)) ! 71: ! 72: local half_cluster=$((cluster_size / 2)) ! 73: local quarter_cluster=$((cluster_size / 4)) ! 74: local l2_size=$((cluster_size * cluster_size / 8)) ! 75: ! 76: # Complete clusters ! 77: io "$op" $offset $cluster_size $cluster_size $num_small ! 78: offset=$((offset + num_small * $cluster_size)) ! 79: ! 80: # From somewhere in the middle to the end of a cluster ! 81: io "$op" $((offset + $half_cluster)) $half_cluster $cluster_size $num_small ! 82: offset=$((offset + num_small * $cluster_size)) ! 83: ! 84: # From the start to somewhere in the middle of a cluster ! 85: io "$op" $offset $half_cluster $cluster_size $num_small ! 86: offset=$((offset + num_small * $cluster_size)) ! 87: ! 88: # Completely misaligned (and small) ! 89: io "$op" $((offset + $quarter_cluster)) $half_cluster $cluster_size $num_small ! 90: offset=$((offset + num_small * $cluster_size)) ! 91: ! 92: # Spanning multiple clusters ! 93: io "$op" $((offset + $half_cluster)) $((cluster_size * 2)) $((cluster_size * 3)) $num_medium ! 94: offset=$((offset + num_medium * 3 * $cluster_size)) ! 95: ! 96: # Spanning multiple L2 tables ! 97: # L2 table size: 512 clusters of 4k = 2M ! 98: offset=$(( ((offset + l2_size - 1) & ~(l2_size - 1)) - (3 * half_cluster) )) ! 99: io "$op" $offset $((6 * half_cluster)) $(( l2_size + half_cluster )) $num_large ! 100: offset=$((offset + num_large * ( l2_size + half_cluster ))) ! 101: } ! 102: ! 103: function io_test2() { ! 104: local orig_offset=$1 ! 105: local cluster_size=$2 ! 106: local num=$3 ! 107: ! 108: # Pattern (repeat after 9 clusters): ! 109: # used - used - free - used - compressed - compressed - ! 110: # free - free - compressed ! 111: ! 112: # Write the clusters to be compressed ! 113: echo === Clusters to be compressed [1] ! 114: io_pattern writev $((offset + 4 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 115: echo === Clusters to be compressed [2] ! 116: io_pattern writev $((offset + 5 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 117: echo === Clusters to be compressed [3] ! 118: io_pattern writev $((offset + 8 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 119: ! 120: mv $TEST_IMG $TEST_IMG.orig ! 121: $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c $TEST_IMG.orig $TEST_IMG ! 122: ! 123: # Write the used clusters ! 124: echo === Used clusters [1] ! 125: io_pattern writev $((offset + 0 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 126: echo === Used clusters [2] ! 127: io_pattern writev $((offset + 1 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 128: echo === Used clusters [3] ! 129: io_pattern writev $((offset + 3 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165 ! 130: ! 131: # Read them ! 132: echo === Read used/compressed clusters ! 133: io_pattern readv $((offset + 0 * $cluster_size)) $((2 * $cluster_size)) $((9 * $cluster_size)) $num 165 ! 134: io_pattern readv $((offset + 3 * $cluster_size)) $((3 * $cluster_size)) $((9 * $cluster_size)) $num 165 ! 135: io_pattern readv $((offset + 8 * $cluster_size)) $((1 * $cluster_size)) $((9 * $cluster_size)) $num 165 ! 136: ! 137: echo === Read zeros ! 138: io_zero readv $((offset + 2 * $cluster_size)) $((1 * $cluster_size)) $((9 * $cluster_size)) $num ! 139: io_zero readv $((offset + 6 * $cluster_size)) $((2 * $cluster_size)) $((9 * $cluster_size)) $num ! 140: }
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