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#
# 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_pool
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
}
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