mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
67 lines
1.8 KiB
Bash
67 lines
1.8 KiB
Bash
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#! /bin/sh
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# FS QA Test No. 203
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#
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# Test out ENOSPC flushiung on small filesystems.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2009 Dave Chinner
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#-----------------------------------------------------------------------
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#
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# creator
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owner=david@fromorbit.com
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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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# 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 xfs
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_supported_os Linux
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_require_scratch
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_scratch_mkfs_xfs -d size=16m -b size=512 >/dev/null
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_scratch_mount
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# on a 16MB filesystem, there's 32768x512byte blocks. used is:
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# - 4944 in the log,
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# - 32+1 for the root inode cluster
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# - 4 for the AG header
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# - 2 for free space btrees
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# - 4 for the AGFL
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# - min(%5, 1024) = 1024 blocks for the reserve pool
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# - about 15 blocks I can't account for right now.
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# That leaves ~26,745 blocks free to use.
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#
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# Writing the following three files fill the fs almost exactly.
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#
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# $ df -k /mnt/scratch
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# Filesystem 1K-blocks Used Available Use% Mounted on
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# /dev/ubdc 13912 13908 4 100% /mnt/scratch
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#
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dd if=/dev/zero of=$SCRATCH_MNT/fred bs=512 count=25000 2>&1 | _filter_dd
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dd if=/dev/zero of=$SCRATCH_MNT/fred2 bs=512 count=500 2>&1 | _filter_dd
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dd if=/dev/zero of=$SCRATCH_MNT/fred3 bs=512 count=245 2>&1 | _filter_dd
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rm -f $SCRATCH_MNT/fred*
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echo "*** one file"
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# now try a single file of that size
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dd if=/dev/zero of=$SCRATCH_MNT/fred bs=512 count=26745 2>&1 | _filter_dd
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#rm -f $SCRATCH_MNT/fred*
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echo "*** one file, a few bytes at a time"
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# now try a single file of that size
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dd if=/dev/zero of=$SCRATCH_MNT/fred bs=15 count=$[26745/15*512] 2>&1 | _filter_dd
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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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