| #! /bin/bash | |
| # FS QA Test No. 224 | |
| # | |
| # Delayed allocation at ENOSPC test | |
| # | |
| # Derived from a test case from Lachlan McIlroy and improved to | |
| # reliably trigger a BUG in xfs_get_blocks(). Despite this XFS | |
| # focus, the test can to run on any filesystem to exercise ENOSPC | |
| # behaviour. | |
| # | |
| #----------------------------------------------------------------------- | |
| # Copyright (c) 2010 Dave Chinner. All Rights Reserved. | |
| # | |
| # This program is free software; you can redistribute it and/or | |
| # modify it under the terms of the GNU General Public License as | |
| # published by the Free Software Foundation. | |
| # | |
| # This program is distributed in the hope that it would be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program; if not, write the Free Software Foundation, | |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| # | |
| #----------------------------------------------------------------------- | |
| # | |
| # creator | |
| owner=david@fromorbit.com | |
| seq=`basename $0` | |
| echo "QA output created by $seq" | |
| here=`pwd` | |
| tmp=/tmp/$$ | |
| status=1 # failure is the default! | |
| _cleanup() | |
| { | |
| rm -f $tmp.* | |
| rm -f $SCRATCH_MNT/testfile.* | |
| } | |
| trap "_cleanup ; exit \$status" 0 1 2 3 15 | |
| # get standard environment, filters and checks | |
| . ./common.rc | |
| . ./common.filter | |
| # real QA test starts here | |
| _supported_fs generic | |
| _supported_os Linux | |
| _require_scratch | |
| # make a 1GB filesystem | |
| _scratch_mkfs_sized `expr 1024 \* 1024 \* 1024` > $seq.full 2>&1 | |
| _scratch_mount >> $seq.full 2>&1 | |
| # set the reserved block pool to almost empty for XFS | |
| if [ "$FSTYP" = "xfs" ]; then | |
| xfs_io -x -c "resblks 4" $SCRATCH_MNT >> $seq.full 2>&1 | |
| fi | |
| FILES=1000 | |
| for i in `seq 0 1 $FILES`; do | |
| # set the file size to be 10MB - that way the direct IO will always try | |
| # to read at least 10MB even if only 4k was written. This allows | |
| # discarded delalloc pages that would have been beyond EOF to be | |
| # tripped over. | |
| ( | |
| sleep 5 | |
| xfs_io -f -c "truncate 10485760" $SCRATCH_MNT/testfile.$i | |
| dd if=/dev/zero of=$SCRATCH_MNT/testfile.$i bs=4k conv=notrunc | |
| ) > /dev/null 2>&1 & | |
| done | |
| wait | |
| for i in `seq 0 1 $FILES`; do | |
| dd of=/dev/null if=$SCRATCH_MNT/testfile.$i bs=512k iflag=direct > /dev/null 2>&1 & | |
| done | |
| wait | |
| echo "*** Silence is golden ***" | |
| status=0 | |
| exit |