+#!/bin/ksh -p
+
+#
+# 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.
+#
+
+. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
+
+#
+# DESCRIPTION:
+# Import with missing log device should not remove spare/cache.
+#
+# STRATEGY:
+# 1. Create a pool.
+# 2. Add spare, cache and log devices to the pool.
+# 3. Export the pool.
+# 4. Remove the log device.
+# 5. Import the pool with -m flag.
+# 6. Verify that spare and cache are still present in the pool.
+#
+
+verify_runnable "global"
+
+log_onexit cleanup
+
+function test_missing_log
+{
+ typeset poolcreate="$1"
+ typeset cachevdev="$2"
+ typeset sparevdev="$3"
+ typeset logvdev="$4"
+ typeset missingvdev="$4"
+
+ log_note "$0: pool '$poolcreate', adding $cachevdev, $sparevdev," \
+ "$logvdev then moving away $missingvdev."
+
+ log_must zpool create $TESTPOOL1 $poolcreate
+
+ log_must zpool add $TESTPOOL1 cache $cachevdev spare $sparevdev \
+ log $logvdev
+
+ log_must_busy zpool export $TESTPOOL1
+
+ log_must mv $missingvdev $BACKUP_DEVICE_DIR
+
+ log_must zpool import -m -d $DEVICE_DIR $TESTPOOL1
+
+ CACHE_PRESENT=$(zpool status -v $TESTPOOL1 | grep $cachevdev)
+
+ SPARE_PRESENT=$(zpool status -v $TESTPOOL1 | grep $sparevdev)
+
+ if [ -z "$CACHE_PRESENT"] || [ -z "SPARE_PRESENT"]
+ then
+ log_fail "cache/spare vdev missing after importing with missing" \
+ "log device"
+ fi
+
+ # Cleanup
+ log_must zpool destroy $TESTPOOL1
+
+ log_note ""
+}
+
+log_must mkdir -p $BACKUP_DEVICE_DIR
+
+test_missing_log "$VDEV0" "$VDEV1" "$VDEV2" "$VDEV3"
+
+log_pass "zpool import succeeded with missing log device"