1#!/bin/ksh -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#
24# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26#
27
28#
29# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
30#
31
32. $STF_SUITE/include/libtest.shlib
33. $STF_SUITE/tests/functional/zvol/zvol_common.shlib
34
35#
36# DESCRIPTION:
37#	swaplow + swaplen must be less than or equal to the volume size.
38#
39# STRATEGY:
40#	1. Get test system page size and test volume size.
41#	2. Random get swaplow and swaplen.
42#	3. Verify swap -a should succeed when swaplow + swaplen <= volume size.
43#
44
45verify_runnable "global"
46
47assertion="Verify the sum of swaplow and swaplen is less or equal to volsize"
48log_assert $assertion
49
50typeset vol=$TESTPOOL/$TESTVOL
51typeset swapname="/dev/zvol/dsk/$vol"
52typeset -i pageblocks volblocks max_swaplow
53#
54# Both swaplow and swaplen are the desired length of
55# the swap area in 512-byte blocks.
56#
57((pageblocks = $(pagesize) / 512))
58((volblocks = $(get_prop volsize $vol) / 512))
59((max_swaplow = (volblocks - (pageblocks * 2))))
60
61for i in {0..10}; do
62	swaplow=$(shuf -n 1 -i ${pageblocks}-${max_swaplow})
63	((maxlen = max_swaplow - swaplow))
64	swaplen=$(shuf -n 1 -i ${pageblocks}-${maxlen})
65	log_must swap -a $swapname $swaplow $swaplen
66	log_must swap -d $swapname $swaplow
67done
68
69log_pass $assertion
70