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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
1e24e5173e
Use the available block count to compute the number of files we think we can create, rather than hardcoding a particular size. This fixes the ENOSPC failures for xfs filesystems with rmap/reflink support. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <eguan@redhat.com>
102 lines
3.0 KiB
Bash
Executable File
102 lines
3.0 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 204
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#
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# Test out ENOSPC flushing on small filesystems.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2009 Christoph Hellwig.
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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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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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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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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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rm -f $tmp.*
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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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# 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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rm -f $seqres.full
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# get the block size first
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_scratch_mkfs 2> /dev/null | _filter_mkfs 2> $tmp.mkfs > /dev/null
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. $tmp.mkfs
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# For xfs, we need to handle the different default log sizes that different
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# versions of mkfs create. All should be valid with a 16MB log, so use that.
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# And v4/512 v5/1k xfs don't have enough free inodes, set imaxpct=50 at mkfs
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# time solves this problem.
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[ $FSTYP = "xfs" ] && MKFS_OPTIONS="$MKFS_OPTIONS -l size=16m -i maxpct=50"
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SIZE=`expr 115 \* 1024 \* 1024`
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_scratch_mkfs_sized $SIZE $dbsize 2> /dev/null > $tmp.mkfs.raw
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cat $tmp.mkfs.raw | _filter_mkfs 2> $tmp.mkfs > /dev/null
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_scratch_mount
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# Source $tmp.mkfs to get geometry
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. $tmp.mkfs
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# fix the reserve block pool to a known size so that the enospc calculations
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# work out correctly. Space usages is based 22500 files and 1024 reserved blocks
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# on a 4k block size 256 byte inode size filesystem.
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resv_blks=1024
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space=$(stat -f -c '%f * %S' $SCRATCH_MNT | $BC_PROG)
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# decrease files for inode size.
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# 22500 * (256 + 4k) = ~97MB
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# files * (isize + bsize) = 97MB
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# files = (97920000 / (isize + bsize))
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files=$((space / (isize + dbsize)))
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# Now do it again, but factor in the filename sizes too.
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# We naively assume 8 bytes for inode number, 1 byte for ftype,
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# and 1 more byte for namelen, then round up to the nearest 8
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# bytes.
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namelen="$(echo -n "$files" | wc -c)"
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direntlen="$(echo "(10 + $namelen + 7) / 8 * 8" | $BC_PROG)"
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files=$((space / (direntlen + isize + dbsize)))
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echo files $files, resvblks $resv_blks >> $seqres.full
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_scratch_resvblks $resv_blks >> $seqres.full 2>&1
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for i in `seq -w 1 $files`; do
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echo -n > $SCRATCH_MNT/$i
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echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > $SCRATCH_MNT/$i
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done
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# success, all done
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echo "*** done"
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status=0
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