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+#!/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 2007 Sun Microsystems, Inc. All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+
+#
+# DESCRIPTION:
+# 'zpool history' can cope with simultaneous commands.
+#
+# STRATEGY:
+# 1. Create test pool and test fs.
+# 2. Loop 100 times, set properties to test fs simultaneously.
+# 3. Wait for all the command execution complete.
+# 4. Make sure all the commands was logged by 'zpool history'.
+#
+
+verify_runnable "global"
+
+log_assert "'zpool history' can cope with simultaneous commands."
+
+typeset -i orig_count=$(zpool history $spool | wc -l | awk '{print $1}')
+
+typeset -i i=0
+while ((i < 10)); do
+ zfs set compression=off $TESTPOOL/$TESTFS &
+ zfs set atime=off $TESTPOOL/$TESTFS &
+ zfs create $TESTPOOL/$TESTFS1 &
+ zfs create $TESTPOOL/$TESTFS2 &
+ zfs create $TESTPOOL/$TESTFS3 &
+
+ wait
+
+ zfs snapshot $TESTPOOL/$TESTFS1@snap &
+ zfs snapshot $TESTPOOL/$TESTFS2@snap &
+ zfs snapshot $TESTPOOL/$TESTFS3@snap &
+
+ wait
+
+ zfs clone $TESTPOOL/$TESTFS1@snap $TESTPOOL/clone1 &
+ zfs clone $TESTPOOL/$TESTFS2@snap $TESTPOOL/clone2 &
+ zfs clone $TESTPOOL/$TESTFS3@snap $TESTPOOL/clone3 &
+
+ wait
+
+ zfs promote $TESTPOOL/clone1 &
+ zfs promote $TESTPOOL/clone2 &
+ zfs promote $TESTPOOL/clone3 &
+
+ wait
+
+ zfs destroy $TESTPOOL/$TESTFS1 &
+ zfs destroy $TESTPOOL/$TESTFS2 &
+ zfs destroy $TESTPOOL/$TESTFS3 &
+
+ wait
+
+ zfs destroy -Rf $TESTPOOL/clone1 &
+ zfs destroy -Rf $TESTPOOL/clone2 &
+ zfs destroy -Rf $TESTPOOL/clone3 &
+
+ wait
+ ((i += 1))
+done
+
+typeset -i entry_count=$(zpool history $spool | wc -l | awk '{print $1}')
+
+if ((entry_count - orig_count != 200)); then
+ log_fail "The entries count error: entry_count=$entry_count " \
+ "orig_count = $orig_count"
+fi
+
+log_pass "'zpool history' can cope with simultaneous commands."