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#!/bin/bash
#
# CDDL HEADER START
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
# CDDL HEADER END
#
#
# Copyright (c) 2015 by Delphix. All rights reserved.
# Copyright (C) 2016 Lawrence Livermore National Security, LLC.
#
basedir="$(dirname $0)"
SCRIPT_COMMON=common.sh
if [ -f "${basedir}/${SCRIPT_COMMON}" ]; then
. "${basedir}/${SCRIPT_COMMON}"
else
echo "Missing helper script ${SCRIPT_COMMON}" && exit 1
fi
PROG=zloop.sh
DEFAULTWORKDIR=/var/tmp
DEFAULTCOREDIR=/var/tmp/zloop
function usage
{
echo -e "\n$0 [-t <timeout>] [-c <dump directory>]" \
"[ -- [extra ztest parameters]]\n" \
"\n" \
" This script runs ztest repeatedly with randomized arguments.\n" \
" If a crash is encountered, the ztest logs, any associated\n" \
" vdev files, and core file (if one exists) are moved to the\n" \
" output directory ($DEFAULTCOREDIR by default). Any options\n" \
" after the -- end-of-options marker will be passed to ztest.\n" \
"\n" \
" Options:\n" \
" -t Total time to loop for, in seconds. If not provided,\n" \
" zloop runs forever.\n" \
" -f Specify working directory for ztest vdev files.\n" \
" -c Specify a core dump directory to use.\n" \
" -h Print this help message.\n" \
"" >&2
}
function or_die
{
$@
if [[ $? -ne 0 ]]; then
echo "Command failed: $@"
exit 1
fi
}
function store_core
{
if [[ $ztrc -ne 0 ]] || [[ -f core ]]; then
coreid=$(date "+zloop-%y%m%d-%H%M%S")
foundcrashes=$(($foundcrashes + 1))
dest=$coredir/$coreid
or_die mkdir -p $dest
or_die mkdir -p $dest/vdev
echo "*** ztest crash found - moving logs to $dest"
or_die mv ztest.history $dest/
or_die mv ztest.ddt $dest/
or_die mv ztest.out $dest/
or_die mv $workdir/ztest* $dest/vdev/
or_die mv $workdir/zpool.cache $dest/vdev/
# check for core
if [[ -f core ]]; then
corestatus=$($GDB --batch --quiet \
-ex "set print thread-events off" \
-ex "printf \"*\n* Backtrace \n*\n\"" \
-ex "bt" \
-ex "printf \"*\n* Libraries \n*\n\"" \
-ex "info sharedlib" \
-ex "printf \"*\n* Threads (full) \n*\n\"" \
-ex "info threads" \
-ex "printf \"*\n* Backtraces \n*\n\"" \
-ex "thread apply all bt" \
-ex "printf \"*\n* Backtraces (full) \n*\n\"" \
-ex "thread apply all bt full" \
-ex "quit" $ZTEST core | grep -v "New LWP")
# Dump core + logs to stored directory
echo "$corestatus" >>$dest/status
or_die mv core $dest/
# Record info in cores logfile
echo "*** core @ $coredir/$coreid/core:" | \
tee -a ztest.cores
echo "$corestatus" | tee -a ztest.cores
echo "" | tee -a ztest.cores
fi
echo "continuing..."
fi
}
# parse arguments
# expected format: zloop [-t timeout] [-c coredir] [-- extra ztest args]
coredir=$DEFAULTCOREDIR
workdir=$DEFAULTWORKDIR
timeout=0
while getopts ":ht:c:f:" opt; do
case $opt in
t ) [[ $OPTARG -gt 0 ]] && timeout=$OPTARG ;;
c ) [[ $OPTARG ]] && coredir=$OPTARG ;;
f ) [[ $OPTARG ]] && workdir=$(readlink -f $OPTARG) ;;
h ) usage
exit 2
;;
* ) echo "Invalid argument: -$OPTARG";
usage
exit 1
esac
done
# pass remaining arguments on to ztest
shift $((OPTIND - 1))
# enable core dumps
ulimit -c unlimited
if [[ -f core ]]; then
echo "There's a core dump here you might want to look at first."
exit 1
fi
if [[ ! -d $coredir ]]; then
echo "core dump directory ($coredir) does not exist, creating it."
or_die mkdir -p $coredir
fi
if [[ ! -w $coredir ]]; then
echo "core dump directory ($coredir) is not writable."
exit 1
fi
or_die rm -f ztest.history
or_die rm -f ztest.ddt
or_die rm -f ztest.cores
ztrc=0 # ztest return value
foundcrashes=0 # number of crashes found so far
starttime=$(date +%s)
curtime=$starttime
# if no timeout was specified, loop forever.
while [[ $timeout -eq 0 ]] || [[ $curtime -le $(($starttime + $timeout)) ]]; do
zopt="-VVVVV"
# switch between common arrangements & fully randomized
if [[ $((RANDOM % 2)) -eq 0 ]]; then
mirrors=2
raidz=0
parity=1
vdevs=2
else
mirrors=$(((RANDOM % 3) * 1))
parity=$(((RANDOM % 3) + 1))
raidz=$((((RANDOM % 9) + parity + 1) * (RANDOM % 2)))
vdevs=$(((RANDOM % 3) + 3))
fi
align=$(((RANDOM % 2) * 3 + 9))
runtime=$((RANDOM % 100))
passtime=$((RANDOM % (runtime / 3 + 1) + 10))
size=128m
zopt="$zopt -m $mirrors"
zopt="$zopt -r $raidz"
zopt="$zopt -R $parity"
zopt="$zopt -v $vdevs"
zopt="$zopt -a $align"
zopt="$zopt -T $runtime"
zopt="$zopt -P $passtime"
zopt="$zopt -s $size"
zopt="$zopt -f $workdir"
cmd="$ZTEST $zopt $@"
desc="$(date '+%m/%d %T') $cmd"
echo "$desc" | tee -a ztest.history
echo "$desc" >>ztest.out
$cmd >>ztest.out 2>&1
ztrc=$?
egrep '===|WARNING' ztest.out >>ztest.history
$ZDB -U $workdir/zpool.cache -DD ztest >>ztest.ddt
store_core
curtime=$(date +%s)
done
echo "zloop finished, $foundcrashes crashes found"
uptime >>ztest.out
if [[ $foundcrashes -gt 0 ]]; then
exit 1
fi
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