1#! /usr/local/bin/ksh93 -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23# $FreeBSD$
24
25#
26# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
27# Use is subject to license terms.
28#
29# ident	"@(#)snapshot_008_pos.ksh	1.2	07/01/09 SMI"
30#
31. $STF_SUITE/include/libtest.kshlib
32
33################################################################################
34#
35# __stc_assertion_start
36#
37# ID: snapshot_008_pos
38#
39# DESCRIPTION:
40# Verify that destroying snapshots returns space to the pool.
41#
42# STRATEGY:
43# 1. Create a file system and populate it while snapshotting.
44# 2. Destroy the snapshots and remove the files.
45# 3. Verify the space returns to the pool.
46#
47# TESTABILITY: explicit
48#
49# TEST_AUTOMATION_LEVEL: automated
50#
51# CODING_STATUS: COMPLETED (2005-09-29)
52#
53# __stc_assertion_end
54#
55################################################################################
56
57verify_runnable "both"
58
59function cleanup
60{
61	typeset -i i=1
62	while [[ $i -lt $COUNT ]]; do
63		snapexists $SNAPFS.$i
64		[[ $? -eq 0 ]] && \
65			log_must $ZFS destroy $SNAPFS.$i
66
67		(( i = i + 1 ))
68	done
69
70	[[ -e $TESTDIR ]] && \
71		log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
72}
73
74log_assert "Verify that destroying snapshots returns space to the pool."
75
76log_onexit cleanup
77
78[[ -n $TESTDIR ]] && \
79    log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
80
81typeset -i COUNT=10
82
83orig_size=`get_prop available $TESTPOOL`
84
85log_note "Populate the $TESTDIR directory"
86populate_dir $TESTDIR/file $COUNT $NUM_WRITES $BLOCKSZ ITER $SNAPFS
87
88typeset -i i=1
89while [[ $i -lt $COUNT ]]; do
90	log_must rm -f $TESTDIR/file.$i > /dev/null 2>&1
91	log_must $ZFS destroy $SNAPFS.$i
92
93	(( i = i + 1 ))
94done
95
96new_size=`get_prop available $TESTPOOL`
97
98typeset -i tolerance=0
99
100(( tolerance = new_size - orig_size))
101if (( tolerance > LIMIT )); then
102        log_fail "Space not freed. ($orig_size != $new_size)"
103fi
104
105log_pass "After destroying snapshots, the space is returned to the pool."
106