Add auto-online test for ZED/FMA as part of the ZTS

Automated auto-online test to go along with ZED FMA integration (PR 4673)
auto_online_001.pos works with real devices (sd- and mpath) and with non-real
block devices (loop) by adding a scsi_debug device to the pool

Note: In order for test group to run, ZED must not currently be running.
Kernel 3.16.37 or higher needed for scsi_debug to work properly
If timeout occurs on test using a scsi_debug device (error noticed on Ubuntu
system), a reboot might be needed in order for test to pass. (more
investigation into this)

Also suppressed output from is_real_device/is_loop_device/is_mpath_device -
was making the log file very cluttered with useless error messages
"ie /dev/mapper/sdc is not a block device" from previous patch

Reviewed-by: Don Brady <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: David Quigley <[email protected]>
Signed-off-by: Sydney Vanda <[email protected]>
Closes #5774

9 files changed, 515 insertions, 21 deletions

diff --git a/tests/zfs-tests/include/commands.cfg.in b/tests/zfs-tests/include/commands.cfg.in
index 3bef9a5b7..39266d2ef 100644
--- a/tests/zfs-tests/include/commands.cfg.in
+++ b/tests/zfs-tests/include/commands.cfg.in
@@ -56,12 +56,15 @@ export LOFIADM="@LOFIADM@"
 export LOGNAME="@LOGNAME@"
 export LS="@LS@"
 export LSBLK="@LSBLK@"
+export LSMOD="@LSMOD@"
+export LSSCSI="@LSSCSI@"
 export MD5SUM="@MD5SUM@"
 export MKDIR="@MKDIR@"
 export MKNOD="@MKNOD@"
 export MKTEMP="@MKTEMP@"
 export MNTTAB="@MNTTAB@"
 export MODINFO="@MODINFO@"
+export MODLOAD="@MODLOAD@"
 export MODUNLOAD="@MODUNLOAD@"
 export MOUNT="@MOUNT@"
 export MPSTAT="@MPSTAT@"
diff --git a/tests/zfs-tests/include/default.cfg.in b/tests/zfs-tests/include/default.cfg.in
index a3e4881df..f2241b541 100644
--- a/tests/zfs-tests/include/default.cfg.in
+++ b/tests/zfs-tests/include/default.cfg.in
@@ -34,6 +34,10 @@
 # Common paths
 bindir=@bindir@
 sbindir=@sbindir@
+etcdir=@sysconfdir@
+
+# ZFS Directories
+export ZEDLETDIR=${ZEDLETDIR:-${etcdir}/zfs/zed.d}
 
 # ZFS Commands
 export ZDB=${ZDB:-${sbindir}/zdb}
@@ -47,6 +51,7 @@ export RAIDZ_TEST=${RAIDZ_TEST:-${bindir}/raidz_test}
 export ARC_SUMMARY=${ARC_SUMMARY:-${bindir}/arc_summary.py}
 export ARCSTAT=${ARCSTAT:-${bindir}/arcstat.py}
 export DBUFSTAT=${DBUFSTAT:-${bindir}/dbufstat.py}
+export ZED=${ZED:-${sbindir}/zed}
 
 . $STF_SUITE/include/libtest.shlib
 
diff --git a/tests/zfs-tests/include/libtest.shlib b/tests/zfs-tests/include/libtest.shlib
index 4493d97cd..d9aa1090d 100644
--- a/tests/zfs-tests/include/libtest.shlib
+++ b/tests/zfs-tests/include/libtest.shlib
@@ -1645,23 +1645,145 @@ function reexport_pool
 }
 
 #
-# Verify a given disk is online or offline
+# Verify a given disk or pool state
 #
 # Return 0 is pool/disk matches expected state, 1 otherwise
 #
-function check_state # pool disk state{online,offline}
+function check_state # pool disk state{online,offline,degraded}
 {
 	typeset pool=$1
 	typeset disk=${2#$DEV_DSKDIR/}
 	typeset state=$3
 
-	$ZPOOL status -v $pool | grep "$disk"  \
-	    | grep -i "$state" > /dev/null 2>&1
+	[[ -z $pool ]] || [[ -z $state ]] \
+	    && log_fail "Arguments invalid or missing"
+
+	if [[ -z $disk ]]; then
+		#check pool state only
+		$ZPOOL get -H -o value health $pool \
+		    | grep -i "$state" > /dev/null 2>&1
+	else
+		$ZPOOL status -v $pool | grep "$disk"  \
+		    | grep -i "$state" > /dev/null 2>&1
+	fi
 
 	return $?
 }
 
 #
+# Cause a scan of all scsi host adapters by default
+#
+# $1 optional host number
+#
+function scan_scsi_hosts
+{
+	typeset hostnum=${1}
+
+	if [[ -z $hostnum ]]; then
+		for host in /sys/class/scsi_host/host*; do
+			echo '- - -' > $host/scan
+		done
+	else
+		echo "/sys/class/scsi_host/host$hostnum/scan"
+		echo '- - -' > "/sys/class/scsi_host/host$hostnum/scan"
+	fi
+}
+#
+# Wait for newly created block devices to have their minors created.
+#
+function block_device_wait
+{
+	if is_linux; then
+		$UDEVADM trigger
+		$UDEVADM settle
+	fi
+}
+
+#
+# Online or offline a disk on the system
+#
+# First checks state of disk. Test will fail if disk is not properly onlined
+# or offlined. Online is a full rescan of SCSI disks by echoing to every
+# host entry.
+#
+function on_off_disk # disk state{online,offline} host
+{
+	typeset disk=$1
+	typeset state=$2
+	typeset host=$3
+
+	[[ -z $disk ]] || [[ -z $state ]] &&  \
+	    log_fail "Arguments invalid or missing"
+
+	if is_linux; then
+		if [[ $state == "offline" ]] && ( is_mpath_device $disk ); then
+			dm_name="$($READLINK $DEV_DSKDIR/$disk \
+			    | $NAWK -F / '{print $2}')"
+			slave="$($LS /sys/block/${dm_name}/slaves \
+			    | $NAWK '{print $1}')"
+			while [[ -n $slave ]]; do
+				#check if disk is online
+				$LSSCSI | $EGREP $slave > /dev/null
+				if (($? == 0)); then
+					slave_dir="/sys/block/${dm_name}"
+					slave_dir+="/slaves/${slave}/device"
+					ss="${slave_dir}/state"
+					sd="${slave_dir}/delete"
+					log_must eval "$ECHO 'offline' > ${ss}"
+					log_must eval "$ECHO '1' > ${sd}"
+					$LSSCSI | $EGREP $slave > /dev/null
+						if (($? == 0)); then
+							log_fail "Offlining" \
+							    "$disk failed"
+						fi
+				fi
+				slave="$($LS /sys/block/$dm_name/slaves \
+				    2>/dev/null | $NAWK '{print $1}')"
+			done
+		elif [[ $state == "offline" ]] && ( is_real_device $disk ); then
+			#check if disk is online
+			$LSSCSI | $EGREP $disk > /dev/null
+			if (($? == 0)); then
+				dev_state="/sys/block/$disk/device/state"
+				dev_delete="/sys/block/$disk/device/delete"
+				log_must eval "$ECHO 'offline' > ${dev_state}"
+				log_must eval "$ECHO '1' > ${dev_delete}"
+				$LSSCSI | $EGREP $disk > /dev/null
+					if (($? == 0)); then
+						log_fail "Offlining $disk" \
+						    "failed"
+					fi
+			else
+				log_note "$disk is already offline"
+			fi
+		elif [[ $state == "online" ]]; then
+			#force a full rescan
+			log_must scan_scsi_hosts $host
+			block_device_wait
+			if is_mpath_device $disk; then
+				dm_name="$($READLINK $DEV_DSKDIR/$disk \
+				    | $NAWK -F / '{print $2}')"
+				slave="$($LS /sys/block/$dm_name/slaves \
+				    | $NAWK '{print $1}')"
+				$LSSCSI | $EGREP $slave > /dev/null
+				if (($? != 0)); then
+					log_fail "Onlining $disk failed"
+				fi
+			elif is_real_device $disk; then
+				$LSSCSI | $EGREP $disk > /dev/null
+				if (($? != 0)); then
+					log_fail "Onlining $disk failed"
+				fi
+			else
+				log_fail "$disk is not a real dev"
+			fi
+		else
+			log_fail "$disk failed to $state"
+		fi
+	fi
+}
+
+#
 # Get the mountpoint of snapshot
 # For the snapshot use <mp_filesystem>/.zfs/snapshot/<snap>
 # as its mountpoint
@@ -2754,7 +2876,8 @@ function is_real_device #disk
 	[[ -z $disk ]] && log_fail "No argument for disk given."
 
        if is_linux; then
-		$LSBLK $DEV_RDSKDIR/$disk -o TYPE | $EGREP disk > /dev/null 2>&1
+		($LSBLK $DEV_RDSKDIR/$disk -o TYPE | $EGREP disk > /dev/null) \
+		    2>/dev/null
 		return $?
        fi
 }
@@ -2768,7 +2891,8 @@ function is_loop_device #disk
 	[[ -z $disk ]] && log_fail "No argument for disk given."
 
        if is_linux; then
-		$LSBLK $DEV_RDSKDIR/$disk -o TYPE | $EGREP loop > /dev/null 2>&1
+		($LSBLK $DEV_RDSKDIR/$disk -o TYPE | $EGREP loop > /dev/null) \
+		    2>/dev/null
 		return $?
        fi
 }
@@ -2784,7 +2908,8 @@ function is_mpath_device #disk
 	[[ -z $disk ]] && log_fail "No argument for disk given."
 
 	if is_linux; then
-		$LSBLK $DEV_MPATHDIR/$disk -o TYPE | $EGREP mpath > /dev/null 2>&1
+		($LSBLK $DEV_MPATHDIR/$disk -o TYPE | $EGREP mpath >/dev/null) \
+		     2>/dev/null
 		if (($? == 0)); then
 			$READLINK $DEV_MPATHDIR/$disk > /dev/null 2>&1
 			return $?
@@ -2807,11 +2932,13 @@ function set_slice_prefix
 	if is_linux; then
 		while (( i < $DISK_ARRAY_NUM )); do
 			disk="$($ECHO $DISKS | $NAWK '{print $(i + 1)}')"
-			if ( is_mpath_device $disk ) && [[ -z $($ECHO $disk | awk 'substr($1,18,1)\
-			     ~ /^[[:digit:]]+$/') ]] || ( is_real_device $disk ); then
+			if ( is_mpath_device $disk ) && [[ -z $($ECHO $disk \
+			    | awk 'substr($1,18,1) ~ /^[[:digit:]]+$/') ]] || \
+			    ( is_real_device $disk ); then
 				export SLICE_PREFIX=""
 				return 0
-			elif ( is_mpath_device $disk || is_loop_device $disk ); then
+			elif ( is_mpath_device $disk || is_loop_device \
+			    $disk ); then
 				export SLICE_PREFIX="p"
 				return 0
 			else
@@ -2873,6 +3000,34 @@ function get_device_dir #device
 }
 
 #
+# Get persistent name for given disk
+#
+function get_persistent_disk_name #device
+{
+	typeset device=$1
+	typeset dev_id
+
+	if is_linux; then
+		if is_real_device $device; then
+			dev_id="$($UDEVADM info -q all -n $DEV_DSKDIR/$device \
+			    | $EGREP disk/by-id | $NAWK '{print $2; exit}' \
+			    | $NAWK -F / '{print $3}')"
+			$ECHO $dev_id
+		elif is_mpath_device $device; then
+			dev_id="$($UDEVADM info -q all -n $DEV_DSKDIR/$device \
+			    | $EGREP disk/by-id/dm-uuid \
+			    | $NAWK '{print $2; exit}' \
+			    | $NAWK -F / '{print $3}')"
+			$ECHO $dev_id
+		else
+			$ECHO $device
+		fi
+	else
+		$ECHO $device
+	fi
+}
+
+#
 # Get the package name
 #
 function get_package_name
@@ -3029,17 +3184,6 @@ function get_min
 }
 
 #
-# Wait for newly created block devices to have their minors created.
-#
-function block_device_wait
-{
-	if is_linux; then
-		$UDEVADM trigger
-		$UDEVADM settle
-	fi
-}
-
-#
 # Synchronize all the data in pool
 #
 # $1 pool name
diff --git a/tests/zfs-tests/tests/functional/Makefile.am b/tests/zfs-tests/tests/functional/Makefile.am
index b59df35ba..a2d78f520 100644
--- a/tests/zfs-tests/tests/functional/Makefile.am
+++ b/tests/zfs-tests/tests/functional/Makefile.am
@@ -15,6 +15,7 @@ SUBDIRS = \
 	delegate \
 	devices \
 	exec \
+	fault \
 	features \
 	grow_pool \
 	grow_replicas \
diff --git a/tests/zfs-tests/tests/functional/fault/Makefile.am b/tests/zfs-tests/tests/functional/fault/Makefile.am
new file mode 100644
index 000000000..19bb9428c
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/fault/Makefile.am
@@ -0,0 +1,6 @@
+pkgdatadir = $(datadir)/@PACKAGE@/zfs-tests/tests/functional/fault
+dist_pkgdata_SCRIPTS = \
+	fault.cfg \
+	setup.ksh \
+	cleanup.ksh \
+	auto_online_001_pos.ksh
diff --git a/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh b/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh
new file mode 100755
index 000000000..5bbc57dff
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh
@@ -0,0 +1,142 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+#
+# Copyright (c) 2016 by Intel Corporation. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+. $STF_SUITE/tests/functional/fault/fault.cfg
+
+#
+# DESCRIPTION:
+# Tesing auto-online FMA ZED logic.
+#
+# STRATEGY:
+# 1. Create a pool
+# 2. export a pool
+# 3. offline disk
+# 4. import pool with missing disk
+# 5. online disk
+# 6. ZED polls for an event change for online disk to be automatically
+#    added back to the pool.
+# 7. Creates a raidz1 zpool using persistent disk path names
+#    (ie not /dev/sdc).
+# 8. Tests import using pool guid and cache file.
+#
+# If loop devices are used, then a scsi_debug device is added to the pool.
+#
+verify_runnable "both"
+
+if ! is_physical_device $DISKS; then
+	log_unsupported "Unsupported disks for this test."
+fi
+
+function cleanup
+{
+	#online last disk before fail
+	on_off_disk $offline_disk "online"
+	poolexists $TESTPOOL && destroy_pool $TESTPOOL
+}
+
+log_assert "Testing auto-online FMA ZED logic"
+
+log_onexit cleanup
+
+target=$TESTPOOL
+
+if is_loop_device $DISK1; then
+	SD=$($LSSCSI | $NAWK '/scsi_debug/ {print $6; exit}')
+	SDDEVICE=$($ECHO $SD | $NAWK -F / '{print $3}')
+	SDDEVICE_ID=$(get_persistent_disk_name $SDDEVICE)
+	autoonline_disks="$SDDEVICE"
+else
+	autoonline_disks="$DISK1 $DISK2 $DISK3"
+fi
+
+# Clear disk labels
+for i in {0..2}
+do
+	log_must $ZPOOL labelclear -f /dev/disk/by-id/"${devs_id[i]}"
+done
+
+if is_loop_device $DISK1; then
+	#create a pool with one scsi_debug device and 3 loop devices
+	log_must $ZPOOL create -f $TESTPOOL raidz1 $SDDEVICE_ID $DISK1 \
+	    $DISK2 $DISK3
+elif ( is_real_device $DISK1 || is_mpath_device $DISK1 ); then
+	log_must $ZPOOL create -f $TESTPOOL raidz1 ${devs_id[0]} \
+	    ${devs_id[1]} ${devs_id[2]}
+else
+	log_fail "Disks are not supported for this test"
+fi
+
+#add some data to the pool
+log_must $MKFILE $FSIZE /$TESTPOOL/data
+
+#pool guid import
+typeset guid=$(get_config $TESTPOOL pool_guid)
+if (( RANDOM % 2 == 0 )) ; then
+	target=$guid
+fi
+
+for offline_disk in $autoonline_disks
+do
+	log_must $ZPOOL export -F $TESTPOOL
+
+	host=$($LS /sys/block/$offline_disk/device/scsi_device | $NAWK -F : '{ print $1}')
+	#offline disk
+	on_off_disk $offline_disk "offline"
+
+	#reimport pool with drive missing
+	log_must $ZPOOL import $target
+	check_state $TESTPOOL "" "degraded"
+	if (($? != 0)); then
+		log_fail "$TESTPOOL is not degraded"
+	fi
+
+	#online disk
+	on_off_disk $offline_disk "online" $host
+	
+	log_note "Delay for ZED auto-online"
+	typeset -i timeout=0
+	$CAT ${ZEDLET_DIR}/zedlog | \
+	    $EGREP "zfs_iter_vdev: matched devid" > /dev/null
+	while (($? != 0)); do
+		if ((timeout == $MAXTIMEOUT)); then
+			log_fail "Timeout occured"
+		fi
+		((timeout++))
+		$SLEEP 1
+		$CAT ${ZEDLET_DIR}/zedlog | \
+		    $EGREP "zfs_iter_vdev: matched devid" > /dev/null
+	done
+
+	check_state $TESTPOOL "" "online"
+	if (($? != 0)); then
+		log_fail "$TESTPOOL is not back online"
+	fi
+	$SLEEP 2
+done
+log_must $ZPOOL destroy $TESTPOOL
+
+
+log_pass "Auto-online test successful"
diff --git a/tests/zfs-tests/tests/functional/fault/cleanup.ksh b/tests/zfs-tests/tests/functional/fault/cleanup.ksh
new file mode 100755
index 000000000..600dae16c
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/fault/cleanup.ksh
@@ -0,0 +1,58 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+
+#
+# Copyright (c) 2016 by Intel Corporation. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+. $STF_SUITE/tests/functional/fault/fault.cfg
+
+verify_runnable "global"
+
+cleanup_devices $DISKS
+
+if [[ -f ${ZEDLET_DIR}/zed.pid ]]; then
+	zedpid=$($CAT ${ZEDLET_DIR}/zed.pid)
+	log_must $KILL $zedpid
+fi
+
+log_must $RM ${ZEDLET_DIR}/all-syslog.sh
+log_must $RM ${ZEDLET_DIR}/zed.pid
+log_must $RM ${ZEDLET_DIR}/zedlog
+log_must $RM ${ZEDLET_DIR}/state
+log_must $RMDIR $ZEDLET_DIR
+
+if is_loop_device $DISK1; then
+	SD=$($LSSCSI | $NAWK '/scsi_debug/ {print $6; exit}')
+	SDDEVICE=$($ECHO $SD | $NAWK -F / '{print $3}')
+
+	if [[ -z $SDDEVICE ]]; then
+		log_pass
+	fi
+	#offline disk
+	on_off_disk $SDDEVICE "offline"
+	block_device_wait
+
+	log_must $MODUNLOAD scsi_debug
+fi
+
+log_pass
diff --git a/tests/zfs-tests/tests/functional/fault/fault.cfg b/tests/zfs-tests/tests/functional/fault/fault.cfg
new file mode 100644
index 000000000..a7fe9de93
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/fault/fault.cfg
@@ -0,0 +1,50 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+
+#
+# Copyright (c) 2016 by Intel Corporation. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+
+verify_runnable "global"
+
+export DISK_ARRAY_NUM=$($ECHO ${DISKS} | $NAWK '{print NF}')
+export DISKSARRAY=$DISKS
+export FSIZE=10M
+export MAXTIMEOUT=20
+
+export DISK1=$($ECHO $DISKS | $NAWK '{print $1}')
+export DISK2=$($ECHO $DISKS | $NAWK '{print $2}')
+export DISK3=$($ECHO $DISKS | $NAWK '{print $3}')
+
+export ZEDLET_DIR=/var/tmp/zed
+
+if is_linux; then
+	set_slice_prefix
+	set_device_dir
+	devs_id[0]=$(get_persistent_disk_name $DISK1)
+	devs_id[1]=$(get_persistent_disk_name $DISK2)
+	devs_id[2]=$(get_persistent_disk_name $DISK3)
+	export devs_id
+else
+	DEV_DSKDIR="/dev"
+fi
diff --git a/tests/zfs-tests/tests/functional/fault/setup.ksh b/tests/zfs-tests/tests/functional/fault/setup.ksh
new file mode 100755
index 000000000..f2bc1d016
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/fault/setup.ksh
@@ -0,0 +1,85 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+
+#
+# Copyright (c) 2016 by Intel Corporation. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+. $STF_SUITE/tests/functional/fault/fault.cfg
+
+typeset SDSIZE=256
+typeset SDHOSTS=1
+typeset SDTGTS=1
+typeset SDLUNS=1
+
+[[ -z $UDEVADM ]] && log_fail "Missing UDEVADM command"
+[[ -z $NAWK ]]  && log_fail "Missing NAWK command"
+[[ -z $EGREP ]] && log_fail "Missing EGREP command"
+[[ -z $LSSCSI ]] && log_fail "Missing LSSCSI command"
+[[ -z $MODUNLOAD ]] && log_fail "Missing MODUNLOAD command"
+[[ -z $PGREP ]] && log_fail "Missing PGREP command"
+
+verify_runnable "global"
+if [[ ! -d /var/tmp/zed ]]; then
+	log_must $MKDIR  /var/tmp/zed
+fi
+
+modprobe -n scsi_debug
+if (($? != 0)); then
+	log_unsupported "Platform does not have scsi_debug module"
+fi
+
+# Verify the ZED is not already running.
+$PGREP -x zed > /dev/null
+if (($? == 0)); then
+	log_fail "ZED already running"
+fi
+
+log_must $CP ${ZEDLETDIR}/all-syslog.sh $ZEDLET_DIR
+
+log_note "Starting ZED"
+#run ZED in the background and redirect foreground logging output to zedlog
+log_must eval "$ZED -vF -d $ZEDLET_DIR -p $ZEDLET_DIR/zed.pid -s" \
+    "$ZEDLET_DIR/state 2>${ZEDLET_DIR}/zedlog &"
+
+#if using loop devices, create a scsi_debug device to be used with
+#auto-online test
+if is_loop_device $DISK1; then
+	$LSMOD | $EGREP scsi_debug > /dev/zero
+	if (($? == 0)); then
+		log_fail "SCSI_DEBUG module already installed"
+	else
+		log_must $MODLOAD scsi_debug dev_size_mb=$SDSIZE \
+		    add_host=$SDHOSTS num_tgts=$SDTGTS max_luns=$SDLUNS
+		block_device_wait
+		$LSSCSI | $EGREP scsi_debug > /dev/null
+		if (($? == 1)); then
+			log_fail "scsi_debug failed"
+		else
+			SDDEVICE=$($LSSCSI \
+			    | $NAWK '/scsi_debug/ {print $6; exit}')
+			log_must  $FORMAT -s $SDDEVICE mklabel gpt
+		fi
+	fi
+fi
+
+log_pass