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author | Bryan Schumaker <bjschuma@netapp.com> | 2011-11-01 18:35:22 +0100 |
---|---|---|
committer | J. Bruce Fields <bfields@redhat.com> | 2011-11-08 03:10:47 +0100 |
commit | 800b927b38c7cdfbd7df39d7a8a4b065637ab7b6 (patch) | |
tree | 0428f5b9a1edd5e39566cccb143e5b5aaf44d0a6 /tools/nfsd | |
parent | NFSD: Added fault injection (diff) | |
download | linux-800b927b38c7cdfbd7df39d7a8a4b065637ab7b6.tar.xz linux-800b927b38c7cdfbd7df39d7a8a4b065637ab7b6.zip |
NFSD: Added fault injection script
This script provides a convenient way to use the NFSD fault injection
framework. Fault injection writes to dmesg using the KERN_INFO flag, so
this script will compare the before and after output of `dmesg` to show
the user what happened
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'tools/nfsd')
-rwxr-xr-x | tools/nfsd/inject_fault.sh | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tools/nfsd/inject_fault.sh b/tools/nfsd/inject_fault.sh new file mode 100755 index 000000000000..06a399ac8b2f --- /dev/null +++ b/tools/nfsd/inject_fault.sh @@ -0,0 +1,49 @@ +#!/bin/bash +# +# Copyright (c) 2011 Bryan Schumaker <bjschuma@netapp.com> +# +# Script for easier NFSD fault injection + +# Check that debugfs has been mounted +DEBUGFS=`cat /proc/mounts | grep debugfs` +if [ "$DEBUGFS" == "" ]; then + echo "debugfs does not appear to be mounted!" + echo "Please mount debugfs and try again" + exit 1 +fi + +# Check that the fault injection directory exists +DEBUGDIR=`echo $DEBUGFS | awk '{print $2}'`/nfsd +if [ ! -d "$DEBUGDIR" ]; then + echo "$DEBUGDIR does not exist" + echo "Check that your .config selects CONFIG_NFSD_FAULT_INJECTION" + exit 1 +fi + +function help() +{ + echo "Usage $0 injection_type [count]" + echo "" + echo "Injection types are:" + ls $DEBUGDIR + exit 1 +} + +if [ $# == 0 ]; then + help +elif [ ! -f $DEBUGDIR/$1 ]; then + help +elif [ $# != 2 ]; then + COUNT=0 +else + COUNT=$2 +fi + +BEFORE=`mktemp` +AFTER=`mktemp` +dmesg > $BEFORE +echo $COUNT > $DEBUGDIR/$1 +dmesg > $AFTER +# Capture lines that only exist in the $AFTER file +diff $BEFORE $AFTER | grep ">" +rm -f $BEFORE $AFTER |