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. $STF_SUITE/tests/functional/reservation/reservation.shlib
19
20#
21# DESCRIPTION:
22#
23# Cloning a volume with -o refreservation=auto creates a thick provisioned
24# volume
25#
26# STRATEGY:
27# 1) Create a sparse volume.
28# 2) Snapshot and clone it, using clone -o refreservation=auto.
29# 3) Verify that the clone has refreservation that matches the size predicted by
30#    volsize_to_reservation().
31# 4) Snapshot this second volume and clone it, using clone -o
32#    refreservation=auto.
33# 5) Verify that the second clone has refreservation that matches the size
34#    predicted by volsize_to_reservation().
35#
36
37verify_runnable "global"
38
39function cleanup
40{
41	# Destroy first vol and descendants in one go.
42	destroy_dataset "$TESTPOOL/$TESTVOL" "-Rf"
43}
44
45log_onexit cleanup
46
47log_assert "Cloning a volume with -o refreservation=auto creates a thick" \
48    "provisioned volume"
49
50space_avail=$(get_prop available $TESTPOOL)
51(( vol_size = (space_avail / 4) & ~(1024 * 1024 - 1) ))
52
53vol=$TESTPOOL/$TESTVOL
54vol2=$TESTPOOL/$TESTVOL2
55vol3=$TESTPOOL/$TESTVOL2-again
56
57# Create sparse vol and verify
58log_must zfs create -s -V $vol_size $vol
59resv=$(get_prop refreservation $vol)
60log_must test $resv -eq 0
61
62# Clone it
63snap=$vol@clone
64log_must zfs snapshot $snap
65log_must zfs clone -o refreservation=auto $snap $vol2
66
67# Verify it is thick provisioned
68resv=$(get_prop refreservation $vol2)
69expected=$(volsize_to_reservation $vol2 $vol_size)
70log_must test $resv -eq $expected
71
72# Clone the thick provisioned volume
73snap=$vol2@clone
74log_must zfs snapshot $snap
75log_must zfs clone -o refreservation=auto $snap $vol3
76
77# Verify new newest clone is also thick provisioned
78resv=$(get_prop refreservation $vol3)
79expected=$(volsize_to_reservation $vol3 $vol_size)
80log_must test $resv -eq $expected
81
82log_pass "Cloning a thick provisioned volume results in a sparse volume"
83