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115 lines
3.2 KiB
Bash
115 lines
3.2 KiB
Bash
#!/usr/bin/env bash
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# group: quick
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#
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# Test creating raw image preallocation mode
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#
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# Copyright (C) 2017 Nir Soffer <nirsof@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=nirsof@gmail.com
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seq=`basename $0`
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm -f "$TEST_DIR/empty"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# Some file systems sometimes allocate extra blocks independently of
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# the file size. This function hides the resulting difference in the
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# stat -c '%b' output.
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# Parameter 1: Number of blocks an empty file occupies
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# Parameter 2: Minimal number of blocks in an image
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# Parameter 3: Image size in bytes
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_filter_blocks()
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{
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extra_blocks=$1
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min_blocks=$2
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img_size=$3
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sed -e "s/blocks=$min_blocks\\(\$\\|[^0-9]\\)/min allocation/" \
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-e "s/blocks=$((extra_blocks + img_size / 512))\\(\$\\|[^0-9]\\)/max allocation/"
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}
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# Resize image using block_resize.
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# Parameter 1: image path
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# Parameter 2: new size
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_block_resize()
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{
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local path=$1
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local size=$2
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$QEMU -qmp stdio -nographic -nodefaults \
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-blockdev file,node-name=file,filename=$path,cache.direct=on \
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<<EOF
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{'execute': 'qmp_capabilities'}
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{'execute': 'block_resize', 'arguments': {'node-name': 'file', 'size': $size}}
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{'execute': 'quit'}
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EOF
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}
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt raw
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_supported_proto file fuse
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_supported_os Linux
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_default_cache_mode none
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_supported_cache_modes none directsync
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size=$((1 * 1024 * 1024))
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touch "$TEST_DIR/empty"
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extra_blocks=$(stat -c '%b' "$TEST_DIR/empty")
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# We always write the first byte; check how many blocks this filesystem
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# allocates to match empty image alloation.
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printf "\0" > "$TEST_DIR/empty"
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min_blocks=$(stat -c '%b' "$TEST_DIR/empty")
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echo
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echo "== creating image with default preallocation =="
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_make_test_img -o extent_size_hint=0 $size
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stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
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for mode in off full falloc; do
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echo
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echo "== creating image with preallocation $mode =="
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_make_test_img -o preallocation=$mode,extent_size_hint=0 $size
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stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
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done
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for new_size in 4096 1048576; do
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echo
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echo "== resize empty image with block_resize =="
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_make_test_img -o extent_size_hint=0 0
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_block_resize $TEST_IMG $new_size >/dev/null
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stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size
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done
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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