Emit history events for 'zpool create'

History commands and events were being suppressed for the
'zpool create' command since the history object did not
yet exist.  Create the object earlier so this history
doesn't get lost.

Split the pool_destroy event in to pool_destroy and
pool_export so they may be distinguished.

Updated events_001_pos and events_002_pos test cases.  They
now check for the expected history events and were reworked
to be more reliable.

Reviewed-by: Nathaniel Clark <[email protected]>
Reviewed-by: Giuseppe Di Natale <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #6712 
Closes #6486 

9 files changed, 131 insertions, 68 deletions

diff --git a/include/sys/spa.h b/include/sys/spa.h
index d4661f4d3..a5278da6b 100644
--- a/include/sys/spa.h
+++ b/include/sys/spa.h
@@ -1005,7 +1005,8 @@ extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
     char *his_buf);
 extern int spa_history_log(spa_t *spa, const char *his_buf);
 extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
-extern void spa_history_log_version(spa_t *spa, const char *operation);
+extern void spa_history_log_version(spa_t *spa, const char *operation,
+    dmu_tx_t *tx);
 extern void spa_history_log_internal(spa_t *spa, const char *operation,
     dmu_tx_t *tx, const char *fmt, ...);
 extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
diff --git a/include/sys/sysevent/eventdefs.h b/include/sys/sysevent/eventdefs.h
index fc2687842..825d88a7b 100644
--- a/include/sys/sysevent/eventdefs.h
+++ b/include/sys/sysevent/eventdefs.h
@@ -101,6 +101,7 @@ extern "C" {
 #define	ESC_ZFS_POOL_CREATE		"pool_create"
 #define	ESC_ZFS_POOL_DESTROY		"pool_destroy"
 #define	ESC_ZFS_POOL_IMPORT		"pool_import"
+#define	ESC_ZFS_POOL_EXPORT		"pool_export"
 #define	ESC_ZFS_VDEV_ADD		"vdev_add"
 #define	ESC_ZFS_VDEV_ATTACH		"vdev_attach"
 #define	ESC_ZFS_VDEV_CLEAR		"vdev_clear"
diff --git a/module/zfs/spa.c b/module/zfs/spa.c
index c519e933b..241c2a6ac 100644
--- a/module/zfs/spa.c
+++ b/module/zfs/spa.c
@@ -3265,7 +3265,7 @@ spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config,
 		 * Log the fact that we booted up (so that we can detect if
 		 * we rebooted in the middle of an operation).
 		 */
-		spa_history_log_version(spa, "open");
+		spa_history_log_version(spa, "open", NULL);
 
 		/*
 		 * Delete any inconsistent datasets.
@@ -4184,6 +4184,15 @@ spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props,
 	tx = dmu_tx_create_assigned(dp, txg);
 
 	/*
+	 * Create the pool's history object.
+	 */
+	if (version >= SPA_VERSION_ZPOOL_HISTORY && !spa->spa_history)
+		spa_history_create_obj(spa, tx);
+
+	spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_CREATE);
+	spa_history_log_version(spa, "create", tx);
+
+	/*
 	 * Create the pool config object.
 	 */
 	spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset,
@@ -4229,12 +4238,6 @@ spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props,
 	    spa->spa_meta_objset, obj));
 
 	/*
-	 * Create the pool's history object.
-	 */
-	if (version >= SPA_VERSION_ZPOOL_HISTORY)
-		spa_history_create_obj(spa, tx);
-
-	/*
 	 * Generate some random noise for salted checksums to operate on.
 	 */
 	(void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes,
@@ -4278,9 +4281,6 @@ spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props,
 		VERIFY0(spa_keystore_remove_mapping(spa, root_dsobj, FTAG));
 
 	spa_config_sync(spa, B_FALSE, B_TRUE);
-	spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_CREATE);
-
-	spa_history_log_version(spa, "create");
 
 	/*
 	 * Don't count references from objsets that are already closed
@@ -4467,7 +4467,7 @@ spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags)
 	 */
 	spa_async_request(spa, SPA_ASYNC_AUTOEXPAND);
 
-	spa_history_log_version(spa, "import");
+	spa_history_log_version(spa, "import", NULL);
 
 	spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT);
 
@@ -4670,7 +4670,10 @@ spa_export_common(char *pool, int new_state, nvlist_t **oldconfig,
 	}
 
 export_spa:
-	spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_DESTROY);
+	if (new_state == POOL_STATE_DESTROYED)
+		spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_DESTROY);
+	else if (new_state == POOL_STATE_EXPORTED)
+		spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_EXPORT);
 
 	if (spa->spa_state != POOL_STATE_UNINITIALIZED) {
 		spa_unload(spa);
diff --git a/module/zfs/spa_history.c b/module/zfs/spa_history.c
index 9d6c5ca5a..511bf1094 100644
--- a/module/zfs/spa_history.c
+++ b/module/zfs/spa_history.c
@@ -89,17 +89,17 @@ spa_history_create_obj(spa_t *spa, dmu_tx_t *tx)
 	spa_history_phys_t *shpp;
 	objset_t *mos = spa->spa_meta_objset;
 
-	ASSERT(spa->spa_history == 0);
+	ASSERT0(spa->spa_history);
 	spa->spa_history = dmu_object_alloc(mos, DMU_OT_SPA_HISTORY,
 	    SPA_OLD_MAXBLOCKSIZE, DMU_OT_SPA_HISTORY_OFFSETS,
 	    sizeof (spa_history_phys_t), tx);
 
-	VERIFY(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT,
+	VERIFY0(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT,
 	    DMU_POOL_HISTORY, sizeof (uint64_t), 1,
-	    &spa->spa_history, tx) == 0);
+	    &spa->spa_history, tx));
 
-	VERIFY(0 == dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp));
-	ASSERT(dbp->db_size >= sizeof (spa_history_phys_t));
+	VERIFY0(dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp));
+	ASSERT3U(dbp->db_size, >=, sizeof (spa_history_phys_t));
 
 	shpp = dbp->db_data;
 	dmu_buf_will_dirty(dbp, tx);
@@ -530,7 +530,7 @@ log_internal(nvlist_t *nvl, const char *operation, spa_t *spa,
 	 * initialized yet, so don't bother logging the internal events.
 	 * Likewise if the pool is not writeable.
 	 */
-	if (tx->tx_txg == TXG_INITIAL || !spa_writeable(spa)) {
+	if (spa_is_initializing(spa) || !spa_writeable(spa)) {
 		fnvlist_free(nvl);
 		return;
 	}
@@ -616,11 +616,11 @@ spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
 }
 
 void
-spa_history_log_version(spa_t *spa, const char *operation)
+spa_history_log_version(spa_t *spa, const char *operation, dmu_tx_t *tx)
 {
 	utsname_t *u = utsname();
 
-	spa_history_log_internal(spa, operation, NULL,
+	spa_history_log_internal(spa, operation, tx,
 	    "pool version %llu; software version %llu/%llu; uts %s %s %s %s",
 	    (u_longlong_t)spa_version(spa), SPA_VERSION, ZPL_VERSION,
 	    u->nodename, u->release, u->version, u->machine);
diff --git a/tests/zfs-tests/include/default.cfg.in b/tests/zfs-tests/include/default.cfg.in
index 7b2ef4d30..90d1d8bd6 100644
--- a/tests/zfs-tests/include/default.cfg.in
+++ b/tests/zfs-tests/include/default.cfg.in
@@ -179,6 +179,8 @@ if is_linux; then
 	DEV_MPATHDIR="/dev/mapper"
 
 	ZEDLET_DIR="/var/tmp/zed"
+	ZED_LOG="$ZEDLET_DIR/zed.log"
+	ZED_DEBUG_LOG="$ZEDLET_DIR/zed.debug.log"
 	VDEVID_CONF="$ZEDLET_DIR/vdev_id.conf"
 	VDEVID_CONF_ETC="/etc/zfs/vdev_id.conf"
 
@@ -200,4 +202,4 @@ else
 fi
 export unpack_opts pack_opts verbose unpack_preserve pack_preserve \
        ZVOL_DEVDIR ZVOL_RDEVDIR NEWFS_DEFAULT_FS DEV_RDSKDIR DEV_MPATHDIR \
-       ZEDLET_DIR VDEVID_CONF VDEVID_CONF_ETC
+       ZEDLET_DIR ZED_LOG ZED_DEBUG_LOG VDEVID_CONF VDEVID_CONF_ETC
diff --git a/tests/zfs-tests/include/libtest.shlib b/tests/zfs-tests/include/libtest.shlib
index 14348d7c6..eef678455 100644
--- a/tests/zfs-tests/include/libtest.shlib
+++ b/tests/zfs-tests/include/libtest.shlib
@@ -3361,11 +3361,14 @@ function zed_setup
 
 	# Customize the zed.rc file to enable the full debug log.
 	log_must sed -i '/\#ZED_DEBUG_LOG=.*/d' $ZEDLET_DIR/zed.rc
-	echo "ZED_DEBUG_LOG=$ZEDLET_DIR/zed.debug.log" >>$ZEDLET_DIR/zed.rc
+	echo "ZED_DEBUG_LOG=$ZED_DEBUG_LOG" >>$ZEDLET_DIR/zed.rc
 
+	# Scripts must only be user writable.
+	saved_umask=$(umask)
+	log_must umask 0022
 	log_must cp ${ZEDLET_LIBEXEC_DIR}/all-syslog.sh $ZEDLET_DIR
 	log_must cp ${ZEDLET_LIBEXEC_DIR}/all-debug.sh $ZEDLET_DIR
-	log_must touch $ZEDLET_DIR/zed.debug.log
+	log_must umask $saved_umask
 }
 
 #
@@ -3381,10 +3384,9 @@ function zed_cleanup
 	log_must rm -f ${ZEDLET_DIR}/zed-functions.sh
 	log_must rm -f ${ZEDLET_DIR}/all-syslog.sh
 	log_must rm -f ${ZEDLET_DIR}/all-debug.sh
-	log_must rm -f ${ZEDLET_DIR}/zed.pid
-	log_must rm -f ${ZEDLET_DIR}/zedlog
-	log_must rm -f ${ZEDLET_DIR}/zed.debug.log
 	log_must rm -f ${ZEDLET_DIR}/state
+	log_must rm -f $ZED_LOG
+	log_must rm -f $ZED_DEBUG_LOG
 	log_must rm -f $VDEVID_CONF_ETC
 	log_must rm -f $VDEVID_CONF
 	rmdir $ZEDLET_DIR
@@ -3412,9 +3414,10 @@ function zed_start
 
 	log_note "Starting ZED"
 	# run ZED in the background and redirect foreground logging
-	# output to zedlog
+	# output to $ZED_LOG.
+	log_must truncate -s 0 $ZED_DEBUG_LOG
 	log_must eval "zed -vF -d $ZEDLET_DIR -p $ZEDLET_DIR/zed.pid" \
-	    "-s $ZEDLET_DIR/state 2>${ZEDLET_DIR}/zedlog &"
+	    "-s $ZEDLET_DIR/state 2>$ZED_LOG &"
 
 	return 0
 }
@@ -3431,7 +3434,9 @@ function zed_stop
 	log_note "Stopping ZED"
 	if [[ -f ${ZEDLET_DIR}/zed.pid ]]; then
 		zedpid=$(cat ${ZEDLET_DIR}/zed.pid)
-		log_must kill $zedpid
+		kill $zedpid
+		wait $zedpid
+		rm -f ${ZEDLET_DIR}/zed.pid
 	fi
 
 	return 0
diff --git a/tests/zfs-tests/tests/functional/events/events_001_pos.ksh b/tests/zfs-tests/tests/functional/events/events_001_pos.ksh
index aaf2ad86c..5121f66b7 100755
--- a/tests/zfs-tests/tests/functional/events/events_001_pos.ksh
+++ b/tests/zfs-tests/tests/functional/events/events_001_pos.ksh
@@ -55,14 +55,22 @@ log_assert "Verify zpool sub-commands generate expected events"
 log_onexit cleanup
 
 log_must truncate -s $MINVDEVSIZE $VDEV1 $VDEV2 $VDEV3 $VDEV4
+
+log_must zpool events -c
 log_must zed_start
 
 # Create a mirrored pool with two devices.
 run_and_verify -p "$MPOOL" \
-    -e "sysevent.fs.zfs.config_sync" \
     -e "sysevent.fs.zfs.pool_create" \
+    -e "sysevent.fs.zfs.history_event" \
+    -e "sysevent.fs.zfs.config_sync" \
     "zpool create $MPOOL mirror $VDEV1 $VDEV2"
 
+# Set a pool property.
+run_and_verify -p "$MPOOL" \
+    -e "sysevent.fs.zfs.history_event" \
+    "zpool set comment=string $MPOOL"
+
 # Add a cache device then remove it.
 run_and_verify -p "$MPOOL" \
     -e "sysevent.fs.zfs.config_sync" \
@@ -86,15 +94,22 @@ run_and_verify -p "$MPOOL"\
     -e "resource.fs.zfs.statechange" \
     -e "sysevent.fs.zfs.config_sync" \
     "zpool offline $MPOOL $VDEV1"
-run_and_verify -p "$MPOOL" \
+run_and_verify -p "$MPOOL" -d 10 \
     -e "resource.fs.zfs.statechange" \
     -e "sysevent.fs.zfs.vdev_online" \
+    -e "sysevent.fs.zfs.resilver_start" \
+    -e "sysevent.fs.zfs.resilver_finish" \
+    -e "sysevent.fs.zfs.history_event" \
     -e "sysevent.fs.zfs.config_sync" \
     "zpool online $MPOOL $VDEV1"
 
 # Attach then detach a device from the mirror.
-run_and_verify -p "$MPOOL" \
-     -e "sysevent.fs.zfs.vdev_attach" \
+run_and_verify -p "$MPOOL" -d 10 \
+    -e "sysevent.fs.zfs.vdev_attach" \
+    -e "sysevent.fs.zfs.resilver_start" \
+    -e "sysevent.fs.zfs.resilver_finish" \
+    -e "sysevent.fs.zfs.history_event" \
+    -e "sysevent.fs.zfs.config_sync" \
     "zpool attach $MPOOL $VDEV1 $VDEV4"
 run_and_verify -p "$MPOOL" \
     -e "sysevent.fs.zfs.vdev_remove" \
@@ -102,26 +117,30 @@ run_and_verify -p "$MPOOL" \
     "zpool detach $MPOOL $VDEV4"
 
 # Replace a device
-run_and_verify -p "$MPOOL" \
+run_and_verify -p "$MPOOL" -d 10 \
     -e "sysevent.fs.zfs.vdev_attach" \
     -e "sysevent.fs.zfs.resilver_start" \
     -e "sysevent.fs.zfs.resilver_finish" \
+    -e "sysevent.fs.zfs.vdev_remove" \
+    -e "sysevent.fs.zfs.history_event" \
     -e "sysevent.fs.zfs.config_sync" \
     "zpool replace -f $MPOOL $VDEV1 $VDEV4"
 
 # Scrub a pool.
-run_and_verify -p "$MPOOL" \
+run_and_verify -p "$MPOOL" -d 10 \
     -e "sysevent.fs.zfs.scrub_start" \
     -e "sysevent.fs.zfs.scrub_finish" \
+    -e "sysevent.fs.zfs.history_event" \
     "zpool scrub $MPOOL"
 
-# Export then import a pool (may change to a pool_export event)
+# Export then import a pool
 run_and_verify -p "$MPOOL" \
-    -e "sysevent.fs.zfs.pool_destroy" \
+    -e "sysevent.fs.zfs.pool_export" \
     -e "sysevent.fs.zfs.config_sync" \
     "zpool export $MPOOL"
 run_and_verify -p "$MPOOL" \
     -e "sysevent.fs.zfs.pool_import" \
+    -e "sysevent.fs.zfs.history_event" \
     -e "sysevent.fs.zfs.config_sync" \
     "zpool import -d $TEST_BASE_DIR $MPOOL"
 
diff --git a/tests/zfs-tests/tests/functional/events/events_002_pos.ksh b/tests/zfs-tests/tests/functional/events/events_002_pos.ksh
index 6f6ab541a..b5cb3bb1d 100755
--- a/tests/zfs-tests/tests/functional/events/events_002_pos.ksh
+++ b/tests/zfs-tests/tests/functional/events/events_002_pos.ksh
@@ -29,7 +29,7 @@
 # Verify ZED handles missed events from a pool when starting.
 #
 # STRATEGY:
-# 1. Create a pool and generate some events.
+# 1. Clear the events and create a pool to generate some events.
 # 2. Start the ZED and verify it handles missed events.
 # 3. Stop the ZED
 # 4. Generate additional events.
@@ -51,7 +51,6 @@ function cleanup
 	done
 
 	log_must rm -f $TMP_EVENTS_ZED $TMP_EVENTS_ZED
-	log_must rm -f $ZEDLET_DIR/zed.debug.log.old
 	log_must zed_stop
 }
 
@@ -61,24 +60,25 @@ log_onexit cleanup
 log_must truncate -s $MINVDEVSIZE $VDEV1 $VDEV2
 
 # 1. Create a pool and generate some events.
-log_must cp -f $ZEDLET_DIR/zed.debug.log $ZEDLET_DIR/zed.debug.log.old
+log_must truncate -s 0 $ZED_DEBUG_LOG
+log_must zpool events -c
 log_must zpool create $MPOOL mirror $VDEV1 $VDEV2
 
 # 2. Start the ZED and verify it handles missed events.
 log_must zed_start
-log_must sleep 1
-diff $ZEDLET_DIR/zed.debug.log.old $ZEDLET_DIR/zed.debug.log | \
-    grep "^> " | sed 's/^> //g' >$TMP_EVENTS_ZED
-log_must awk -v event="sysevent.fs.zfs.pool_create" \
+log_must file_wait $ZED_DEBUG_LOG
+log_must cp $ZED_DEBUG_LOG $TMP_EVENTS_ZED
+
+awk -v event="sysevent.fs.zfs.pool_create" \
     'BEGIN{FS="\n"; RS=""} $0 ~ event { print $0 }' \
     $TMP_EVENTS_ZED >$TMP_EVENT_ZED
 log_must grep -q "^ZEVENT_POOL=$MPOOL" $TMP_EVENT_ZED
 
 # 3. Stop the ZED
 zed_stop
+log_must truncate -s 0 $ZED_DEBUG_LOG
 
 # 4. Generate additional events.
-log_must cp -f $ZEDLET_DIR/zed.debug.log $ZEDLET_DIR/zed.debug.log.old
 log_must zpool offline $MPOOL $VDEV1
 log_must zpool online $MPOOL $VDEV1
 log_must zpool scrub $MPOOL
@@ -90,9 +90,8 @@ done
 
 # 5. Start the ZED and verify it only handled the new missed events.
 log_must zed_start
-log_must sleep 20
-diff $ZEDLET_DIR/zed.debug.log.old $ZEDLET_DIR/zed.debug.log | \
-    grep "^> " | sed 's/^> //g' >$TMP_EVENTS_ZED
+log_must file_wait $ZED_DEBUG_LOG 15
+log_must cp $ZED_DEBUG_LOG $TMP_EVENTS_ZED
 
 log_mustnot grep -q "sysevent.fs.zfs.pool_create" $TMP_EVENTS_ZED
 log_must grep -q "sysevent.fs.zfs.vdev_online" $TMP_EVENTS_ZED
diff --git a/tests/zfs-tests/tests/functional/events/events_common.kshlib b/tests/zfs-tests/tests/functional/events/events_common.kshlib
index 9ef97ca62..5c411936d 100755
--- a/tests/zfs-tests/tests/functional/events/events_common.kshlib
+++ b/tests/zfs-tests/tests/functional/events/events_common.kshlib
@@ -27,13 +27,39 @@
 . $STF_SUITE/include/libtest.shlib
 . $STF_SUITE/tests/functional/events/events.cfg
 
+#
+# Wait for up to 'timeout' seconds for the 'file' to settle, i.e.
+# not be updated for a period of 'delay' seconds.
+#
+function file_wait # file delay timeout
+{
+	file=$1
+	delay=${2:-3}
+	timeout=${3:-120}
+
+	SECONDS=0
+
+	while [ $(( $(date +%s) - $(stat -c %Y $file) )) -lt $delay ]; do
+		if [[ $SECONDS -gt $timeout ]]; then
+			return 1
+		fi
+
+		sleep 1
+	done
+
+	return 0;
+}
+
 function run_and_verify
 {
-	typeset event pool
+	typeset delay event pool zedlog
 	set -A events
 
-	while getopts "e:p:z:" opt; do
+	while getopts "d:e:p:z:" opt; do
 		case $opt in
+		d)
+			delay=$OPTARG
+			;;
 		e)
 			events[${#events[*]}+1]=$OPTARG
 			;;
@@ -48,7 +74,8 @@ function run_and_verify
 	shift $(($OPTIND - 1))
 
 	pool=${pool:-$TESTPOOL}
-	zedlog=${zedlog:-$ZEDLET_DIR/zed.debug.log}
+	delay=${delay:-3}
+	zedlog=${zedlog:-$ZED_DEBUG_LOG}
 	fullcmd="$1"
 	cmd=$(echo $fullcmd | awk '{print $1}')
 	subcmd=$(echo $fullcmd | awk '{print $2}')
@@ -57,21 +84,28 @@ function run_and_verify
 	[[ $cmd == "zpool" || $cmd == "zfs" ]] || \
 	    log_fail "run_and_verify called with \"$cmd ($fullcmd)\""
 
-	# Run the command as provided and collect the new events.
+	log_note "Checking events for command: '$fullcmd'"
+
+	# Remove any previous events from the logs.
 	log_must zpool events -c
-	if [[ -f $zedlog ]]; then
-		cp -f $zedlog $zedlog.old
-	fi
+	log_must truncate -s 0 $zedlog
 
+	# Run the command as provided.
 	log_must eval "$fullcmd"
 
-	log_must zpool events > $TMP_EVENTS 2>/dev/null
-	log_must zpool events -v > $TMP_EVENTS_FULL 2>/dev/null
-	if [[ -f $zedlog ]]; then
-		sleep 5 # Brief delay for the ZED to handle the event.
-		diff $zedlog.old $zedlog | grep "^> " | sed 's/^> //g' \
-		    >$TMP_EVENTS_ZED
-	fi
+	# Collect the new events and verify there are some.
+	log_must zpool sync -f
+	log_must file_wait $zedlog $delay
+	log_must cp $zedlog $TMP_EVENTS_ZED
+	log_must eval "zpool events >$TMP_EVENTS 2>/dev/null"
+	log_must eval "zpool events -v > $TMP_EVENTS_FULL 2>/dev/null"
+
+	log_must test -s $TMP_EVENTS
+	log_must test -s $TMP_EVENTS_FULL
+	log_must test -s $TMP_EVENTS_ZED
+
+	log_note "Events generated:"
+	cat $TMP_EVENTS
 
 	# Verify all the expected events appear in the log.
 	for event in ${events[*]}; do
@@ -80,19 +114,18 @@ function run_and_verify
 		log_must grep -q "$event" $TMP_EVENTS
 
 		# Verify the event is in the verbose output with pool name.
-		log_must awk -v event="$event" \
+		awk -v event="$event" \
 		    'BEGIN{FS="\n"; RS=""} $0 ~ event { print $0 }' \
 		    $TMP_EVENTS_FULL >$TMP_EVENT_FULL
 		log_must grep -q "pool = \"$pool\"" $TMP_EVENT_FULL
 
 		# Verify the event was received by the ZED and logged.
-		log_must awk -v event="$event" \
+		awk -v event="$event" \
 		    'BEGIN{FS="\n"; RS=""} $0 ~ event { print $0 }' \
 		    $TMP_EVENTS_ZED >$TMP_EVENT_ZED
 		log_must grep -q "^ZEVENT_POOL=$pool" $TMP_EVENT_ZED
-
 	done
 
-	log_must rm -f $TMP_EVENTS $TMP_EVENTS_FULL $TMP_EVENT_FULL \
-	    $TMP_EVENTS_ZED $TMP_EVENT_ZED $zedlog.old
+	rm -f $TMP_EVENTS $TMP_EVENTS_FULL $TMP_EVENT_FULL \
+	    $TMP_EVENTS_ZED $TMP_EVENT_ZED
 }