2010-01-20 10:27:08 +11:00
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#! /bin/bash
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2009-05-10 10:42:09 -05:00
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# FS QA Test No. 205
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2009-04-13 15:55:41 +02:00
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#
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2009-05-10 10:42:09 -05:00
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# Test out ENOSPC flushing on small filesystems.
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2009-04-13 15:55:41 +02:00
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2009 Dave Chinner
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2009-06-05 11:51:55 +02:00
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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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2009-04-13 15:55:41 +02:00
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#-----------------------------------------------------------------------
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#
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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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2011-11-10 11:08:18 +11:00
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rm -f $seq.full
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_scratch_mkfs_xfs -d size=16m -b size=512 >> $seq.full 2>&1
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2009-04-13 15:55:41 +02:00
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_scratch_mount
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2010-03-06 11:25:10 +11:00
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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.
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2011-11-10 11:08:18 +11:00
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_scratch_resvblks 1024 >> $seq.full 2>&1
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2010-03-06 11:25:10 +11:00
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2009-04-13 15:55:41 +02:00
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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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status=0
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