1#!/bin/ksh -p
2#
3# This file and its contents are supplied under the terms of the
4# Common Development and Distribution License ("CDDL"), version 1.0.
5# You may only use this file in accordance with the terms of version
6# 1.0 of the CDDL.
7#
8# A full copy of the text of the CDDL should have accompanied this
9# source.  A copy of the CDDL is also available via the Internet at
10# http://www.illumos.org/license/CDDL.
11#
12
13#
14# Copyright (c) 2016, 2017 by Delphix. All rights reserved.
15#
16
17. $STF_SUITE/tests/functional/channel_program/channel_common.kshlib
18
19#
20# DESCRIPTION:
21#       Multiple interacting promotions in a single txg should succeed.
22#
23
24verify_runnable "global"
25
26fs=$TESTPOOL/$TESTFS/testchild
27clone1=$TESTPOOL/$TESTFS/testchild_clone1
28clone2=$TESTPOOL/$TESTFS/testchild_clone2
29snap1=$fs@testchild_snap1
30snap2=$clone1@testchild_snap2
31
32function cleanup
33{
34    for to_destroy in $fs $clone1 $clone2; do
35        destroy_dataset $to_destroy "-R"
36    done
37}
38
39log_onexit cleanup
40
41#
42# Create a chain of clones and snapshots:
43#
44# snap1 -----------> fs
45#     \--> snap2 --> clone1
46#              \---> clone2
47#
48# Then promote clone2 twice, resulting in:
49#
50# snap1 --> snap2 --> clone2
51#     \         \---> clone1
52#      \------------> fs
53#
54# We then attempt to destroy clone1, which should succeed since it no
55# longer has any dependents.
56#
57log_must zfs create $fs
58log_must zfs snapshot $snap1
59log_must zfs clone $snap1 $clone1
60log_must zfs snapshot $snap2
61log_must zfs clone $snap2 $clone2
62
63log_must zfs unmount -f $clone1
64
65log_must_program_sync $TESTPOOL - <<-EOF
66    assert(zfs.sync.promote("$clone2") == 0)
67    assert(zfs.sync.promote("$clone2") == 0)
68    assert(zfs.sync.destroy("$clone1") == 0)
69EOF
70
71log_pass "Multiple promotes and destroying a demoted fs in one txg works."
72