1 #!/bin/sh 2 ################################################################################ 3 ## ## 4 ## Copyright (c) International Business Machines Corp., 2009 ## 5 ## ## 6 ## This program is free software; you can redistribute it and/or modify ## 7 ## it under the terms of the GNU General Public License as published by ## 8 ## the Free Software Foundation; either version 2 of the License, or ## 9 ## (at your option) any later version. ## 10 ## ## 11 ## This program is distributed in the hope that it will be useful, but ## 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## 13 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## 14 ## for more details. ## 15 ## ## 16 ## You should have received a copy of the GNU General Public License ## 17 ## along with this program; if not, write to the Free Software ## 18 ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ## 19 ## ## 20 ################################################################################ 21 # ## 22 # File : insert_kernel_faults.sh ## 23 # ## 24 # Usage: insert_kernel_faults.sh <fault_percentage> ## 25 # ## 26 # Description: This is a simple script that inserts faults at various ## 27 # subsystems of the kernel. Please refer to the ltp/README ## 28 # for the various kernel CONFIG options needed to exploit ## 29 # all those features ## 30 # ## 31 # Author: Subrata Modak <subrata (at] linux.vnet.ibm.com> ## 32 # ## 33 # History: Aug 11 2009 - Created - Subrata Modak. ## 34 # Aug 17 2009 - Changed the debugfs mount point - Subrata Modak.## 35 ################################################################################ 36 37 if [ -z "$1" ] 38 then 39 #Check if Useage has been proper 40 echo "Usage: $0 <fault_percentage>" 41 exit 1 42 fi 43 44 #These are the types of Subsystems where fault will be injected 45 #Make sure debugfs has been mounted 46 for FAILTYPE in fail_io_timeout fail_make_request fail_page_alloc failslab 47 do 48 echo $1 > /sys/kernel/debug/$FAILTYPE/probability 49 echo 100 > /sys/kernel/debug/$FAILTYPE/interval 50 echo -1 > /sys/kernel/debug/$FAILTYPE/times 51 echo 0 > /sys/kernel/debug/$FAILTYPE/space 52 done 53 54
