| #! /bin/bash |
| # FS QA Test No. 109 |
| # |
| # ENOSPC deadlock case from Asano Masahiro. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2005 Silicon Graphics, Inc. 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=nathans@sgi.com |
| |
| seq=`basename $0` |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _supported_os Linux XFS |
| _require_scratch |
| |
| populate() |
| { |
| # "faststart" lets us effectively skip (re-)population |
| [ "X$faststart" != "X" ] && rm -f $SCRATCH_MNT/F* |
| |
| # create many small files using most available space |
| echo "creating small files..." |
| i=0 |
| while [ $i -le $files -a "X$faststart" = "X" ]; do |
| file=$SCRATCH_MNT/f$i |
| xfs_io -f -d -c 'pwrite -b 64k 0 64k' $file >/dev/null |
| let i=$i+1 |
| done |
| |
| # remove every second file, freeing up lots of space |
| echo "removing small files..." |
| i=1 |
| while [ $i -le $files -a "X$faststart" = "X" ]; do |
| rm $SCRATCH_MNT/f$i |
| let i=$i+2 |
| done |
| |
| echo "flushing changes via umount/mount." |
| umount $SCRATCH_DEV |
| _scratch_mount |
| } |
| |
| allocate() |
| { |
| # now try to hit the deadlock |
| echo "starting parallel allocators..." |
| i=0 |
| while [ $i -le 10 ]; do |
| file=$SCRATCH_MNT/F$i |
| { |
| j=0 |
| while [ $j -lt 100 ]; do |
| xfs_io -f -c 'pwrite -b 64k 0 16m' $file \ |
| >/dev/null 2>&1 |
| rm $file |
| let j=$j+1 |
| done |
| } & |
| let i=$i+1 |
| done |
| |
| wait |
| echo "all done!" |
| } |
| |
| # real QA test starts here |
| umount $SCRATCH_DEV 2>/dev/null |
| _scratch_mount |
| |
| # see if faststart is possible (and requested) |
| files=2000 |
| faststart="" |
| if [ -n "$FASTSTART" -a -f $SCRATCH_MNT/f0 ]; then |
| faststart="-N" # causes us to skip the mkfs step |
| fi |
| umount $SCRATCH_DEV |
| |
| _scratch_mkfs_xfs -dsize=160m,agcount=4 $faststart | _filter_mkfs 2>$tmp.mkfs |
| cat $tmp.mkfs >>$seq.full |
| _scratch_mount |
| |
| populate |
| allocate |
| status=0 |
| exit |