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https://github.com/linux-apfs/apfstests.git
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Eric Sandeen
8a5dcff7ca
A first-cut test to ensure that files are well-aligned on filesystems with stripe geometry. Several sizes of stripe units are mkfs'd, and then files are written and fallocated in various multiples of those stripe sizes. Each file is checked to ensure that the first block is stripe-aligned. (Ideally, for any fragmented files, we should ensure that each fragment start is well-aligned, but this does not do that yet) (slightly unrelated: don't send scratch mkfs output to /dev/null, we'd like to see mkfs output and direct it to $seq.full - this more or less matches _scratch_mkfs_xfs behavior and doesn't break any tests that I can see) Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de>
104 lines
2.7 KiB
Bash
Executable File
104 lines
2.7 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 223
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#
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# File alignment tests
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2010 Eric Sandeen. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would 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, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#-----------------------------------------------------------------------
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#
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# creator
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owner=sandeen@sandeen.net
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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rm -f $tmp.*
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}
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trap "_cleanup ; exit \$status" 0 1 2 3 15
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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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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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_require_xfs_io_falloc
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rm -f $seq.full
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_filter_scratch()
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{
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sed -e "s,$SCRATCH_MNT,SCRATCH_MNT,g"
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}
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BLOCKSIZE=4096
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for SUNIT_K in 8 16 32 64 128; do
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let SUNIT_BYTES=$SUNIT_K*1024
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let SUNIT_BLOCKS=$SUNIT_BYTES/$BLOCKSIZE
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echo "=== mkfs with su $SUNIT_BLOCKS blocks x 4 ==="
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_scratch_mkfs_geom $SUNIT_BYTES 4 $BLOCKSIZE &>> $seq.full
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_scratch_mount
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for SIZE_MULT in 1 2 8 64 256; do
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let SIZE=$SIZE_MULT*$SUNIT_BYTES
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echo "=== Testing size ${SIZE_MULT}*${SUNIT_K}k on ${SUNIT_K}k stripe ==="
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for FILE in 1 2 3 4; do
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xfs_io -F -f -c "falloc 0 $SIZE" \
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$SCRATCH_MNT/file-$FILE-$SIZE-falloc \
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&>> $seq.full
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xfs_io -F -f -c "pwrite 0 $SIZE" \
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$SCRATCH_MNT/file-$FILE-$SIZE-write \
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&>> $seq.full
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src/t_stripealign $SCRATCH_MNT/file-$FILE-$SIZE-falloc \
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$SUNIT_BLOCKS | _filter_scratch
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src/t_stripealign $SCRATCH_MNT/file-$FILE-$SIZE-write \
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$SUNIT_BLOCKS | _filter_scratch
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done
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done
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echo "=== Testing size 1g falloc on ${SUNIT_K}k stripe ==="
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xfs_io -F -f -c "falloc 0 1g" $SCRATCH_MNT/file-1g-falloc &>> $seq.full
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src/t_stripealign $SCRATCH_MNT/file-1g-falloc $SUNIT_BLOCKS
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rm -f $SCRATCH_MNT/file-1g-falloc | _filter_scratch
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echo "=== Testing size 1073745920 falloc on ${SUNIT_K}k stripe ==="
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xfs_io -F -f -c "falloc 0 1073745920" \
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$SCRATCH_MNT/file-1073745920-falloc &>> $seq.full
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src/t_stripealign $SCRATCH_MNT/file-1073745920-falloc \
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$SUNIT_BLOCKS | _filter_scratch
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_scratch_unmount
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done
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status=0
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exit
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