[src/trunk]: src/tests/kernel First attempt at stress testing umount of a bus...

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/855d49872033
branches:  trunk
changeset: 786137:855d49872033
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Tue Apr 16 22:05:44 2013 +0000

description:
First attempt at stress testing umount of a busy disk.

diffstat:

 tests/kernel/Makefile          |    3 +-
 tests/kernel/t_umountstress.sh |  113 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 115 insertions(+), 1 deletions(-)

diffs (134 lines):

diff -r c13e6c879d2e -r 855d49872033 tests/kernel/Makefile
--- a/tests/kernel/Makefile     Tue Apr 16 21:44:06 2013 +0000
+++ b/tests/kernel/Makefile     Tue Apr 16 22:05:44 2013 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.32 2013/02/28 15:31:22 martin Exp $
+# $NetBSD: Makefile,v 1.33 2013/04/16 22:05:44 mlelstv Exp $
 
 NOMAN=         # defined
 
@@ -16,6 +16,7 @@
 TESTS_C+=      t_kauth_pr_47598
 
 TESTS_SH=      t_umount
+TESTS_SH+=     t_umountstress
 TESTS_SH+=     t_ps_strings
 
 BINDIR=                ${TESTSDIR}
diff -r c13e6c879d2e -r 855d49872033 tests/kernel/t_umountstress.sh
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/kernel/t_umountstress.sh    Tue Apr 16 22:05:44 2013 +0000
@@ -0,0 +1,113 @@
+# $NetBSD: t_umountstress.sh,v 1.1 2013/04/16 22:05:44 mlelstv Exp $
+#
+# Copyright (c) 2013 The NetBSD Foundation, Inc.
+# 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+#
+
+TMPMP=umount-stress_mount
+TMPIM=umount-stress.im
+
+VND=vnd0
+BVND=/dev/${VND}
+CVND=/dev/r${VND}
+MPART=a
+
+atf_test_case umountstress cleanup
+umountstress_head()
+{
+       atf_set "descr" "Checks stressing unmounting a busy filesystem"
+       atf_set "require.user" "root"
+}
+umountstress_body()
+{
+       cat >disktab <<EOF
+floppy288|2.88MB 3.5in Extra High Density Floppy:\
+       :ty=floppy:se#512:nt#2:rm#300:ns#36:nc#80:\
+       :pa#5760:oa#0:ba#4096:fa#512:ta=4.2BSD:\
+       :pb#5760:ob#0:\
+       :pc#5760:oc#0:
+EOF
+
+       echo "*** Creating a dummy directory tree at" \
+            "${TMPMP} mounted on ${TMPIM}"
+
+       atf_check -o ignore -e ignore mkdir ${TMPMP}
+       atf_check -o ignore -e ignore touch ${TMPMP}/under_the_mount
+       atf_check -o ignore -e ignore dd if=/dev/zero of=${TMPIM} count=5860
+       atf_check -o ignore -e ignore vnconfig -v ${VND} ${TMPIM}
+       atf_check -o ignore -e ignore disklabel -f disktab -rw ${VND} floppy288
+       atf_check -o ignore -e ignore newfs -i 500 -b 8192 -f 1024 ${CVND}${MPART}
+       atf_check -o ignore -e ignore mount -o async ${BVND}${MPART} ${TMPMP}
+
+       echo "*** Testing unmount"
+
+       touch ${TMPMP}/hold
+       exec 3< ${TMPMP}/hold
+
+       (
+               for l in 0 1 2 3 4 5 6 7 8 9 10; do
+               for i in 0 1 2 3; do
+               for j in 0 1 2 3 4 5 6 7 8 9; do
+               for k in 0 1 2 3 4 5 6 7 8 9; do
+                       dd msgfmt=quiet if=/dev/zero count=1 of=test$i$j$k
+                       if [ $? -ne 0 ]; then
+                               atf_fail "File operation failed"
+                       fi
+               done
+               done
+               done
+               done
+       ) &
+       busypid=$!
+
+       while kill 2>/dev/null -0 $busypid; do
+               if err=$(umount ${TMPMP} 2>&1); then
+                       kill $busypid
+                       wait
+                       atf_fail "Unmount succeeded while busy"
+               else
+                       case $err in
+                       *:\ Device\ busy)
+                               ;;
+                       *)
+                               kill $busypid
+                               wait
+                               atf_fail "Unmount failed: $err"
+                               ;;
+                       esac
+               fi
+       done
+       wait
+}
+umountstress_cleanup()
+{
+       echo "*** Cleaning up ${TMPMP}, ${TMPIM}."
+       umount -f "${TMPMP}"
+       vnconfig -u "${VND}"
+}
+
+atf_init_test_cases()
+{
+       atf_add_test_case umountstress
+}