#

# This file and its contents are supplied under the terms of the

# Common Development and Distribution License ("CDDL"), version 1.0.

# You may only use this file in accordance with the terms of version

# 1.0 of the CDDL.

#

# A full copy of the text of the CDDL should have accompanied this

# source. A copy of the CDDL is also available via the Internet at

# http://www.illumos.org/license/CDDL.

#

#

# Copyright (c) 2012, 2016 by Delphix. All rights reserved.

#

. $STF_SUITE/include/math.shlib

export TESTVOL="testvol.nopwrite"

export VOLSIZE="256M"

export MEGS="64"

function verify_nopwrite

{

typeset origin=$1

typeset snap=$2

typeset clone=$3

typeset low=1

typeset high=99

sync

for i in origin snap clone; do

for j in used refer usedbychildren written; do

typeset ${i}_$j=$(get_prop $j $(eval echo \$$i))

done

done

#

# If we are dealing with a volume, deduct the refreserv from the used

# value to prevent real failures from being masked by the unexpected

# extra space. Also, volumes use more space for metadata, so adjust the

# percentages to be more forgiving.

#

if [[ "$(get_prop type $origin)" = "volume" ]]; then

typeset rr=$(get_prop refreserv $origin)

((origin_used -= rr ))

low=2

high=98

fi

# These values should differ greatly with nopwrite.

within_percent $origin_used $clone_used $low && return 1

within_percent $origin_refer $origin_usedbychildren $low && return 1

within_percent $snap_written $clone_written $low && return 1

# These values should be nearly the same with nopwrite.

within_percent $origin_used $clone_refer $high || return 1

within_percent $origin_used $snap_refer $high || return 1

#

# The comparisons below should pass regardless of nopwrite. They're

# here for sanity.

#

typeset deadlist=$(zdb -Pddd $clone | awk '/Deadlist:/ {print $2}')

within_percent $deadlist $clone_written $high || return 1

within_percent $snap_refer $snap_written $high || return 1

return 0

}