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
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.
14 # Copyright 2018 Joyent, Inc.
17 . $STF_SUITE/include/libtest.shlib
18 . $STF_SUITE/tests/functional/reservation/reservation.shlib
23 # Cloning a volume with -o refreservation=auto creates a thick provisioned
27 # 1) Create a sparse volume.
28 # 2) Snapshot and clone it, using clone -o refreservation=auto.
29 # 3) Verify that the clone has refreservation that matches the size predicted by
30 # volsize_to_reservation().
31 # 4) Snapshot this second volume and clone it, using clone -o
32 # refreservation=auto.
33 # 5) Verify that the second clone has refreservation that matches the size
34 # predicted by volsize_to_reservation().
37 verify_runnable "global"
41 # Destroy first vol and descendants in one go.
42 destroy_dataset "$TESTPOOL/$TESTVOL" "-Rf"
47 log_assert "Cloning a volume with -o refreservation=auto creates a thick" \
50 space_avail=$(get_prop available $TESTPOOL)
51 (( vol_size = (space_avail / 4) & ~(1024 * 1024 - 1) ))
53 vol=$TESTPOOL/$TESTVOL
54 vol2=$TESTPOOL/$TESTVOL2
55 vol3=$TESTPOOL/$TESTVOL2-again
57 # Create sparse vol and verify
58 log_must zfs create -s -V $vol_size $vol
59 resv=$(get_prop refreservation $vol)
60 log_must test $resv -eq 0
64 log_must zfs snapshot $snap
65 log_must zfs clone -o refreservation=auto $snap $vol2
67 # Verify it is thick provisioned
68 resv=$(get_prop refreservation $vol2)
69 expected=$(volsize_to_reservation $vol2 $vol_size)
70 log_must test $resv -eq $expected
72 # Clone the thick provisioned volume
74 log_must zfs snapshot $snap
75 log_must zfs clone -o refreservation=auto $snap $vol3
77 # Verify new newest clone is also thick provisioned
78 resv=$(get_prop refreservation $vol3)
79 expected=$(volsize_to_reservation $vol3 $vol_size)
80 log_must test $resv -eq $expected
82 log_pass "Cloning a thick provisioned volume results in a sparse volume"