| #!/bin/sh |
| ################################################################################ |
| ## ## |
| ## Copyright (c) International Business Machines Corp., 2009 ## |
| ## ## |
| ## This program is free software; you can redistribute it and/or modify ## |
| ## it under the terms of the GNU General Public License as published by ## |
| ## the Free Software Foundation; either version 2 of the License, or ## |
| ## (at your option) any later version. ## |
| ## ## |
| ## This program is distributed in the hope that it will be useful, but ## |
| ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## |
| ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## |
| ## for more details. ## |
| ## ## |
| ## You should have received a copy of the GNU General Public License ## |
| ## along with this program; if not, write to the Free Software ## |
| ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ## |
| ## ## |
| ################################################################################ |
| # ## |
| # File : insert_kernel_faults.sh ## |
| # ## |
| # Usage: insert_kernel_faults.sh <fault_percentage> ## |
| # ## |
| # Description: This is a simple script that inserts faults at various ## |
| # subsystems of the kernel. Please refer to the ltp/README ## |
| # for the various kernel CONFIG options needed to exploit ## |
| # all those features ## |
| # ## |
| # Author: Subrata Modak <subrata@linux.vnet.ibm.com> ## |
| # ## |
| # History: Aug 11 2009 - Created - Subrata Modak. ## |
| # Aug 17 2009 - Changed the debugfs mount point - Subrata Modak.## |
| ################################################################################ |
| |
| if [ -z "$1" ] |
| then |
| #Check if Useage has been proper |
| echo "Usage: $0 <fault_percentage>" |
| exit 1 |
| fi |
| |
| #These are the types of Subsystems where fault will be injected |
| #Make sure debugfs has been mounted |
| for FAILTYPE in fail_io_timeout fail_make_request fail_page_alloc failslab |
| do |
| echo $1 > /sys/kernel/debug/$FAILTYPE/probability |
| echo 100 > /sys/kernel/debug/$FAILTYPE/interval |
| echo -1 > /sys/kernel/debug/$FAILTYPE/times |
| echo 0 > /sys/kernel/debug/$FAILTYPE/space |
| done |
| |