1 #!/bin/bash -v 2 3 # 4 # Copyright (c) International Business Machines Corp., 2005 5 # Author: Avantika Mathur (mathurav (at] us.ibm.com) 6 # 7 # This library is free software; you can redistribute it and/or 8 # modify it under the terms of the GNU Lesser General Public 9 # License as published by the Free Software Foundation; either 10 # version 2.1 of the License, or (at your option) any later version. 11 # 12 # This library is distributed in the hope that it will be useful, 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 # Lesser General Public License for more details. 16 # 17 # You should have received a copy of the GNU Lesser General Public 18 # License along with this library; if not, write to the Free Software 19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 # 21 22 23 disk1=disk1 24 disk2=disk2 25 disk3=disk3 26 disk4=disk4 27 fs=ext3 28 29 mkdir -p $disk1 $disk2 $disk3 $disk4 30 31 32 33 rm -rf $disk1/* $disk2/* $disk3/* $disk4/* 34 35 mkdir $disk1/a $disk1/b $disk1/c 36 mkdir $disk2/d $disk2/e $disk2/f 37 mkdir $disk3/g $disk3/h $disk3/i 38 mkdir $disk4/j $disk4/k $disk4/l 39 40 lockfile="/.nslock" 41 otherpid= 42 startparent() 43 { 44 rm -f $lockfile 45 echo $$ >| ${lockfile}parent 46 while [ 1 ] 47 do 48 otherpid="$(cat ${lockfile}child 2> /dev/null)" 49 if [ -n "$otherpid" -a -d /proc/$otherpid ] 50 then 51 return 52 fi 53 done 54 } 55 56 57 startchild() 58 { 59 rm -f $lockfile 60 echo $$ >| ${lockfile}child 61 while [ 1 ] 62 do 63 otherpid="$(cat ${lockfile}parent 2> /dev/null)" 64 if [ -n "$otherpid" -a -d /proc/$otherpid ] 65 then 66 return 67 fi 68 done 69 } 70 71 iamgoingahead() 72 { 73 while [ 1 ] 74 do 75 pid=`cat $lockfile 2> /dev/null` 76 if [ "$pid" == "$$" ] 77 then 78 return 79 fi 80 sleep 1 81 done 82 } 83 84 85 goahead() 86 { 87 set -x 88 echo $otherpid > $lockfile 89 set +x 90 } 91 92 93 check(){ 94 "${FS_BIND_ROOT}/bin/check_prop" $* 95 ret=$? 96 if [ $ret -ne 0 ]; then 97 result=$ret 98 fi 99 } 100 export result=0 101 102 cleanup(){ 103 rm -rf "disk"* 104 } 105
