OpenZFS 6404 - zvol_swap_006_pos can occasionally fail due to swaplen being < 16

[mirror_zfs.git] / tests / zfs-tests / tests / functional / zvol / zvol_swap / zvol_swap_006_pos.ksh

#!/bin/ksh -p
#
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#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
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#
# Copyright (c) 2013, 2015 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/zvol/zvol_common.shlib

#
# DESCRIPTION:
#	A volume can be added as several segments, but overlapping segments
#	are not allowed.
#
# STRATEGY:
#	1. Figure out three groups swaplow and swaplen.
#	2. Verify different volume segments can be added correctly.
#	3. Verify overlapping swap volume are not allowed.
#

verify_runnable "global"

function cleanup
{
	typeset -i i=0

	while ((count > 0)); do
		log_must $SWAP -d $swapname ${swap_opt[$i]}

		((i += 2))
		((count -= 1))
	done
}

log_assert "Verify volume can be add as several segments, but overlapping " \
	"are not allowed."
log_onexit cleanup

# swap -a won't allow the use of multiple segments of the same volume unless
# libdiskmgmt is disabled with the environment variable below.
typeset -x NOINUSE_CHECK=1

typeset vol=$TESTPOOL/$TESTVOL
typeset -i pageblocks volblocks
((pageblocks = $($PAGESIZE) / 512))
((volblocks = $(get_prop volsize $vol) / 512))

log_note "Verify volume can be add as several segments."

#
#		swaplow			swaplen
set -A swap_opt	$((pageblocks))	    \
		$((RANDOM % (50 * pageblocks) + 2 * pageblocks)) \
		$((volblocks / 3))  \
		$((RANDOM % (50 * pageblocks) + 2 * pageblocks)) \
		$((volblocks / 2))  \
		$((RANDOM % (50 * pageblocks) + 2 * pageblocks)) \
		$(((volblocks*2) / 3))  \
		$((RANDOM % (50 * pageblocks) + 2 * pageblocks))

swapname=${ZVOL_DEVDIR}/$vol
typeset -i i=0 count=0

if is_swap_inuse $swapname ; then
	log_must $SWAP -d $swapname
fi

while ((i < ${#swap_opt[@]})); do
	log_must $SWAP -a $swapname ${swap_opt[$i]} ${swap_opt[((i+1))]}

	((i += 2))
	((count += 1))
done

log_note "Verify overlapping swap volume are not allowed"
i=0
while ((i < ${#swap_opt[@]})); do
	log_mustnot $SWAP -a $swapname ${swap_opt[$i]}

	((i += 2))
done

log_pass "Verify volume can be added as several segments passed."