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 2018 Joyent, Inc.
15#
16
17. $STF_SUITE/include/libtest.shlib
18. $STF_SUITE/tests/functional/reservation/reservation.shlib
19
20#
21# DESCRIPTION:
22#
23# Cloning a thick provisioned volume results in a sparse volume
24#
25# STRATEGY:
26# 1) Create a thick provisioned volume.
27# 2) Snapshot and clone it.
28# 3) Verify that the clone is sparse.
29#
30
31verify_runnable "global"
32
33function cleanup
34{
35	# Destroy first vol and descendants in one go.
36	destroy_dataset "$TESTPOOL/$TESTVOL" "-Rf"
37}
38
39log_onexit cleanup
40
41log_assert "Cloning a thick provisioned volume results in a sparse volume"
42
43space_avail=$(get_prop available $TESTPOOL)
44(( vol_size = (space_avail / 4) & ~(1024 * 1024 - 1) ))
45
46vol=$TESTPOOL/$TESTVOL
47snap=$vol@clone
48vol2=$TESTPOOL/$TESTVOL2
49
50# Create sparse vol and verify
51log_must zfs create -V $vol_size $vol
52resv=$(get_prop refreservation $vol)
53expected=$(volsize_to_reservation $vol $vol_size)
54log_must test $resv -eq $expected
55
56# Clone it
57log_must zfs snapshot $snap
58log_must zfs clone $snap $vol2
59
60# Verify
61resv=$(get_prop refreservation $vol2)
62log_must test $resv -eq 0
63
64log_pass "Cloning a thick provisioned volume results in a sparse volume"
65