#! /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.
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#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2013 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/snapshot/snapshot.cfg

#
# DESCRIPTION:
#	Verify 'snapshot -r' can create snapshot for promoted clone, and vice
#	versa, a clone filesystem from the snapshot created by 'snapshot -r'
#	can be correctly promoted.
#
# STRATEGY:
#	1. Create a dataset tree
#	2. snapshot a filesystem and clone the snapshot
#	3. promote the clone
#	4. snapshot -r the dataset tree
#	5. verify that the snapshot of cloned filesystem is created correctly
#	6. clone a snapshot from the snapshot tree
#	7. promote the clone
#	8. verify that the clone is promoted correctly.
#

verify_runnable "both"

function cleanup
{
	if datasetexists $clone1; then
		log_must $ZFS promote $ctrfs
		log_must $ZFS destroy $clone1
	fi

	snapexists $snapctr && \
		log_must $ZFS destroy -r $snapctr

	if snapexists $clone@$TESTSNAP1; then
		log_must $ZFS promote $ctrfs
		log_must $ZFS destroy -rR $ctrfs@$TESTSNAP1
	fi
}

log_assert "Verify that 'snapshot -r' can work with 'zfs promote'."
log_onexit cleanup

ctr=$TESTPOOL/$TESTCTR
ctrfs=$ctr/$TESTFS1
clone=$ctr/$TESTCLONE
clone1=$ctr/$TESTCLONE1
snappool=$SNAPPOOL
snapfs=$SNAPFS
snapctr=$ctr@$TESTSNAP
snapctrclone=$clone@$TESTSNAP
snapctrclone1=$clone1@$TESTSNAP
snapctrfs=$SNAPCTR

#preparation for testing
log_must $ZFS snapshot $ctrfs@$TESTSNAP1
log_must $ZFS clone $ctrfs@$TESTSNAP1 $clone
log_must $ZFS promote $clone

log_must $ZFS snapshot -r $snapctr

! snapexists $snapctrclone && \
	log_fail "'snapshot -r' fails to create $snapctrclone for $ctr/$TESTCLONE."

log_must $ZFS clone $snapctrfs $clone1
log_must $ZFS promote $clone1

#verify the origin value is correct.
orig_value=$(get_prop origin $ctrfs)
if ! snapexists $snapctrclone1 || [[ "$orig_value" != "$snapctrclone1" ]]; then
	log_fail "'zfs promote' fails to promote $clone which is cloned from \
		$snapctrfs."
fi

log_pass "'snapshot -r' can work with 'zfs promote' as expected."
