#!/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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# or http://www.opensolaris.org/os/licensing.
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#
# Copyright (c) 2012, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/cli_root/zfs_destroy/zfs_destroy.cfg
. $STF_SUITE/tests/functional/cli_root/zfs_destroy/zfs_destroy_common.kshlib

################################################################################
#
# When using 'zfs destroy -R' on a file system heirarchy that inclues a
# snapshot and a clone of that snapshot, and the snapshot has been
# defer-destroyed, make sure that the 'zfs destroy -R' works as expected.
# In particular make sure that libzfs is not confused by the fact that the
# kernel will automatically remove the defer-destroyed snapshot when the
# clone is destroyed.
#
# 1. Create test environment.
# 2. Create a clone of the snapshot.
# 3. 'zfs destroy -d <snap>'
# 4. 'zfs destroy -R'
# 5. Verify that the snapshot and clone are destroyed.
#
################################################################################

log_assert "'zfs destroy -R' works on deferred destroyed snapshots"
log_onexit cleanup_testenv

setup_testenv clone
log_must umount -f $TESTDIR1

for dstype in FS VOL; do
    ds=$(eval echo \$${dstype})
    snap=$(eval echo \$${dstype}SNAP)
    clone=$(eval echo \$${dstype}CLONE)
    log_must zfs destroy -d $snap
    log_must datasetexists $snap
    log_must zfs destroy -R $ds
    log_mustnot datasetexists $snap
    log_mustnot datasetexists $clone
done

log_pass "'zfs destroy -R' works on deferred destroyed snapshots"