svn commit: r190638 - projects/stress2/misc

[Peter Holm]

Author: pho
Date: Thu Apr  2 07:11:54 2009
New Revision: 190638
URL: http://svn.freebsd.org/changeset/base/190638

Log:
  Added test based on scanario from "kern/94769: [ufs] Multiple file
  deletions on multi-snapshotted filesystems causes hang"

Added:
  projects/stress2/misc/snap8.sh   (contents, props changed)

Added: projects/stress2/misc/snap8.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/stress2/misc/snap8.sh	Thu Apr  2 07:11:54 2009	(r190638)
@@ -0,0 +1,95 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2009 Peter Holm <pho at FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# Deadlock seen when deleting the snapshots during an "ls" of the FS
+
+# Based on test scenario by John Kozubik <john at kozubik dot com>
+# kern/94769: [ufs] Multiple file deletions on multi-snapshotted filesystems
+# causes hang
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+mount | grep -q /dev/md${mdstart}$part && umount -f /dev/md${mdstart}$part
+mdconfig -l | grep -q md${mdstart} && mdconfig -d -u $mdstart
+
+
+parallel=20
+size=25  # Gb
+[ `df -k $(dirname $diskimage) | tail -1 | awk '{print $4'}` -lt $((size * 1024 * 1024)) ] && \
+                echo "Not enough disk space." && exit 1
+truncate -s ${size}G $diskimage
+
+mdconfig -a -t vnode -f $diskimage -u $mdstart
+disklabel -r -w md$mdstart auto
+newfs -O2 -U md${mdstart}${part} > /dev/null
+mount /dev/md${mdstart}${part} $mntpoint
+
+
+cc -o /tmp/fstool -Wall ../tools/fstool.c
+for i in `jot $parallel`; do
+	(mkdir $mntpoint/test$i; cd $mntpoint/test$i; /tmp/fstool -l -f 50 -n 500 -s 8k) &
+done
+for i in `jot $parallel`; do
+	wait
+done
+rm -f /tmp/fstool
+
+mksnap_ffs $mntpoint $mntpoint/.snap/snap1
+mksnap_ffs $mntpoint $mntpoint/.snap/snap2
+mksnap_ffs $mntpoint $mntpoint/.snap/snap3
+mksnap_ffs $mntpoint $mntpoint/.snap/snap4
+mksnap_ffs $mntpoint $mntpoint/.snap/snap5
+mksnap_ffs $mntpoint $mntpoint/.snap/snap6
+mksnap_ffs $mntpoint $mntpoint/.snap/snap7
+mksnap_ffs $mntpoint $mntpoint/.snap/snap8
+mksnap_ffs $mntpoint $mntpoint/.snap/snap9
+
+for i in `jot $parallel`; do
+	rm -rf $mntpoint/test$i &
+done
+for i in `jot $parallel`; do
+	wait
+done
+
+rm -rf $mntpoint/.snap/snap? &
+
+for i in `jot 10`; do
+	ls -lsrt $mntpoint > /dev/null 2>&1
+	sleep 2
+done
+wait
+
+umount /dev/md${mdstart}$part
+
+mount | grep -q /dev/md${mdstart}$part && umount -f /dev/md${mdstart}$part
+mdconfig -l | grep -q md${mdstart} && mdconfig -d -u $mdstart
+rm -f $diskimage