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t_umountstress.sh revision 1.1 
      1 # $NetBSD: t_umountstress.sh,v 1.1 2013/04/16 22:05:44 mlelstv Exp $
      2 #
      3 # Copyright (c) 2013 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # Redistribution and use in source and binary forms, with or without
      7 # modification, are permitted provided that the following conditions
      8 # are met:
      9 # 1. Redistributions of source code must retain the above copyright
     10 #    notice, this list of conditions and the following disclaimer.
     11 # 2. Redistributions in binary form must reproduce the above copyright
     12 #    notice, this list of conditions and the following disclaimer in the
     13 #    documentation and/or other materials provided with the distribution.
     14 #
     15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 # POSSIBILITY OF SUCH DAMAGE.
     26 #
     27 
     28 TMPMP=umount-stress_mount
     29 TMPIM=umount-stress.im
     30 
     31 VND=vnd0
     32 BVND=/dev/${VND}
     33 CVND=/dev/r${VND}
     34 MPART=a
     35 
     36 atf_test_case umountstress cleanup
     37 umountstress_head()
     38 {
     39 	atf_set "descr" "Checks stressing unmounting a busy filesystem"
     40 	atf_set "require.user" "root"
     41 }
     42 umountstress_body()
     43 {
     44 	cat >disktab <<EOF
     45 floppy288|2.88MB 3.5in Extra High Density Floppy:\
     46 	:ty=floppy:se#512:nt#2:rm#300:ns#36:nc#80:\
     47 	:pa#5760:oa#0:ba#4096:fa#512:ta=4.2BSD:\
     48 	:pb#5760:ob#0:\
     49 	:pc#5760:oc#0:
     50 EOF
     51 
     52 	echo "*** Creating a dummy directory tree at" \
     53 	     "${TMPMP} mounted on ${TMPIM}"
     54 
     55 	atf_check -o ignore -e ignore mkdir ${TMPMP}
     56 	atf_check -o ignore -e ignore touch ${TMPMP}/under_the_mount
     57 	atf_check -o ignore -e ignore dd if=/dev/zero of=${TMPIM} count=5860
     58 	atf_check -o ignore -e ignore vnconfig -v ${VND} ${TMPIM}
     59 	atf_check -o ignore -e ignore disklabel -f disktab -rw ${VND} floppy288
     60 	atf_check -o ignore -e ignore newfs -i 500 -b 8192 -f 1024 ${CVND}${MPART}
     61 	atf_check -o ignore -e ignore mount -o async ${BVND}${MPART} ${TMPMP}
     62 
     63 	echo "*** Testing unmount"
     64 
     65 	touch ${TMPMP}/hold
     66 	exec 3< ${TMPMP}/hold
     67 
     68 	(
     69 		for l in 0 1 2 3 4 5 6 7 8 9 10; do
     70 		for i in 0 1 2 3; do
     71 		for j in 0 1 2 3 4 5 6 7 8 9; do
     72 		for k in 0 1 2 3 4 5 6 7 8 9; do
     73 			dd msgfmt=quiet if=/dev/zero count=1 of=test$i$j$k
     74 			if [ $? -ne 0 ]; then
     75 				atf_fail "File operation failed"
     76 			fi
     77 		done
     78 		done
     79 		done
     80 		done
     81 	) &
     82 	busypid=$!
     83 
     84 	while kill 2>/dev/null -0 $busypid; do
     85 		if err=$(umount ${TMPMP} 2>&1); then
     86 			kill $busypid
     87 			wait
     88 			atf_fail "Unmount succeeded while busy"
     89 		else
     90 			case $err in
     91 			*:\ Device\ busy)
     92 				;;
     93 			*)
     94 				kill $busypid
     95 				wait
     96 				atf_fail "Unmount failed: $err"
     97 				;;
     98 			esac
     99 		fi
    100 	done
    101 	wait
    102 }
    103 umountstress_cleanup()
    104 {
    105 	echo "*** Cleaning up ${TMPMP}, ${TMPIM}."
    106 	umount -f "${TMPMP}"
    107 	vnconfig -u "${VND}"
    108 }
    109 
    110 atf_init_test_cases()
    111 {
    112 	atf_add_test_case umountstress
    113 }
    114