add real scsi device expand test

tests/runfiles/linux.run

@@ -333,7 +333,7 @@ tags = ['functional', 'cli_root', 'zpool_events']
 
 [tests/functional/cli_root/zpool_expand]
 tests = ['zpool_expand_001_pos', 'zpool_expand_002_pos',
-    'zpool_expand_003_neg', 'zpool_expand_004_pos']
+    'zpool_expand_003_neg', 'zpool_expand_004_pos', 'zpool_expand_005_pos']
 tags = ['functional', 'cli_root', 'zpool_expand']
 
 [tests/functional/cli_root/zpool_export]

tests/zfs-tests/tests/functional/cli_root/zpool_expand/Makefile.am

@@ -5,7 +5,8 @@ dist_pkgdata_SCRIPTS = \
 	zpool_expand_001_pos.ksh \
 	zpool_expand_002_pos.ksh \
 	zpool_expand_003_neg.ksh \
-	zpool_expand_004_pos.ksh
+	zpool_expand_004_pos.ksh \
+	zpool_expand_005_pos.ksh
 
 dist_pkgdata_DATA = \
 	zpool_expand.cfg

tests/zfs-tests/tests/functional/cli_root/zpool_expand/zpool_expand_005_pos.ksh

@@ -0,0 +1,101 @@
+#! /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 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2012, 2018 by Delphix. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+. $STF_SUITE/include/blkdev.shlib
+. $STF_SUITE/tests/functional/cli_root/zpool_expand/zpool_expand.cfg
+
+#
+# DESCRIPTION:
+#
+# STRATEGY:
+# 1) Create a scsi_debug device and a pool based on it
+# 2) Expand the device and rescan the scsi bus
+# 3) Reopen the pool and check that it detects new available space
+# 4) Online the device and check that the pool has been expanded
+#
+
+verify_runnable "global"
+
+function cleanup
+{
+	if poolexists $TESTPOOL1; then
+		log_must zpool destroy $TESTPOOL1
+	fi
+	unload_scsi_debug
+}
+
+log_onexit cleanup
+
+log_assert "zpool based on scsi device can be expanded with zpool online -e"
+
+# run scsi_debug to create a device
+MINVDEVSIZE_MB=$((MINVDEVSIZE / 1048576))
+load_scsi_debug $MINVDEVSIZE_MB 1 1 1 '512b'
+block_device_wait
+SDISK=$(get_debug_device)
+log_must zpool create $TESTPOOL1 $SDISK
+
+typeset autoexp=$(get_pool_prop autoexpand $TESTPOOL1)
+if [[ $autoexp != "off" ]]; then
+	log_fail "zpool $TESTPOOL1 autoexpand should be off but is $autoexp"
+fi
+
+typeset prev_size=$(get_pool_prop size $TESTPOOL1)
+log_note "original pool size: $prev_size"
+
+# resize the scsi_debug device
+echo "5" > /sys/bus/pseudo/drivers/scsi_debug/virtual_gb
+# rescan the device to detect the new size
+echo "1" > /sys/class/block/$SDISK/device/rescan
+block_device_wait
+
+# reopen the pool so ZFS can see the new space
+log_must zpool reopen $TESTPOOL1
+
+typeset expandsize=$(get_pool_prop expandsize $TESTPOOL1)
+log_note "pool expandsize: $expandsize"
+if [[ "$zpool_expandsize" = "-" ]]; then
+	log_fail "pool $TESTPOOL1 did not detect any " \
+	    "expandsize after reopen"
+fi
+
+# online the device so the zpool will use the new space
+log_must zpool online -e $TESTPOOL1 $SDISK
+
+typeset new_size=$(get_pool_prop size $TESTPOOL1)
+log_note "new pool size: $new_size"
+if [[ $new_size -le $prev_size ]]; then
+	log_fail "pool $TESTPOOL1 did not expand " \
+	    "after LUN expansion and zpool online -e"
+fi
+
+log_pass "zpool based on scsi_debug can be expanded with reopen and online -e"