| #! /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 |
| # |
| #----------------------------------------------------------------------- |
| # |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| 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` > $seqres.full 2>&1 |
| _scratch_mount >> $seqres.full 2>&1 |
| |
| # set the reserved block pool to almost empty for XFS |
| if [ "$FSTYP" = "xfs" ]; then |
| $XFS_IO_PROG -x -c "resblks 4" $SCRATCH_MNT >> $seqres.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_PROG -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.$i bs=512k iflag=direct > /dev/null 2>&1 & |
| done |
| wait |
| echo "*** Silence is golden ***" |
| |
| # unmount and check dmesg, filtering out expected warnings about mixed |
| # direct and buffered I/O |
| _scratch_unmount |
| _check_dmesg _filter_aiodio_dmesg |
| |
| status=$? |
| exit |