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t_umountstress.sh revision 1.2 
      1 # $NetBSD: t_umountstress.sh,v 1.2 2013/04/20 09:00:03 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 9< ${TMPMP}/hold
     67 
     68 	(
     69 		for j in 0 1 2 3 4 5 6 7 8 9; do
     70 		for k in 0 1 2 3 4 5 6 7 8 9; do
     71 			if ! dd msgfmt=quiet if=/dev/zero \
     72 				count=1 of=${TMPMP}/test$i$j$k; then
     73 				echo 1
     74 				exit
     75 			fi
     76 		done
     77 		done
     78 		echo 0
     79 	) > result &
     80 	busypid=$!
     81 
     82 	while kill 2>/dev/null -0 $busypid; do
     83 		if err=$(umount ${TMPMP} 2>&1); then
     84 			kill $busypid
     85 			exec 9<&-
     86 			wait
     87 			atf_fail "Unmount succeeded while busy"
     88 			return
     89 		fi
     90 
     91 		case $err in
     92 		*:\ Device\ busy)
     93 			;;
     94 		*)
     95 			kill $busypid
     96 			exec 9<&-
     97 			wait
     98 			atf_fail "Unmount failed: $err"
     99 			return
    100 			;;
    101 		esac
    102 	done
    103 
    104 	exec 9<&-
    105 	wait
    106 
    107 	rc=`cat result`
    108 	rm -f result
    109 
    110 	case $rc in
    111 	0) ;;
    112 	*) atf_fail "File operation failed with rc $rc"
    113 	esac
    114 }
    115 umountstress_cleanup()
    116 {
    117 	echo "*** Cleaning up ${TMPMP}, ${TMPIM}."
    118 	umount -f "${TMPMP}"
    119 	vnconfig -u "${VND}"
    120 }
    121 
    122 atf_init_test_cases()
    123 {
    124 	atf_add_test_case umountstress
    125 }
    126