tools/nfsd/inject_fault.sh

   1 #!/bin/bash
   2 #
   3 # Copyright (c) 2011 Bryan Schumaker <bjschuma@netapp.com>
   4 #
   5 # Script for easier NFSD fault injection
   6
   7 # Check that debugfs has been mounted
   8 DEBUGFS=`cat /proc/mounts | grep debugfs`
   9 if [ "$DEBUGFS" == "" ]; then
  10         echo "debugfs does not appear to be mounted!"
  11         echo "Please mount debugfs and try again"
  12         exit 1
  13 fi
  14
  15 # Check that the fault injection directory exists
  16 DEBUGDIR=`echo $DEBUGFS | awk '{print $2}'`/nfsd
  17 if [ ! -d "$DEBUGDIR" ]; then
  18         echo "$DEBUGDIR does not exist"
  19         echo "Check that your .config selects CONFIG_NFSD_FAULT_INJECTION"
  20         exit 1
  21 fi
  22
  23 function help()
  24 {
  25         echo "Usage $0 injection_type [count]"
  26         echo ""
  27         echo "Injection types are:"
  28         ls $DEBUGDIR
  29         exit 1
  30 }
  31
  32 if [ $# == 0 ]; then
  33         help
  34 elif [ ! -f $DEBUGDIR/$1 ]; then
  35         help
  36 elif [ $# != 2 ]; then
  37         COUNT=0
  38 else
  39         COUNT=$2
  40 fi
  41
  42 BEFORE=`mktemp`
  43 AFTER=`mktemp`
  44 dmesg > $BEFORE
  45 echo $COUNT > $DEBUGDIR/$1
  46 dmesg > $AFTER
  47 # Capture lines that only exist in the $AFTER file
  48 diff $BEFORE $AFTER | grep ">"
  49 rm -f $BEFORE $AFTER