#!/usr/local/bin/ksh93 -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
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# When distributing Covered Code, include this CDDL HEADER in each
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# $FreeBSD: releng/12.3/tests/sys/cddl/zfs/tests/refreserv/refreserv_004_pos.ksh 329867 2018-02-23 16:31:00Z asomers $

#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# ident	"@(#)refreserv_004_pos.ksh	1.3	09/05/19 SMI"
#

. $STF_SUITE/include/libtest.kshlib

#################################################################################
#
# __stc_assertion_start
#
# ID: refreserv_004_pos
#
# DESCRIPTION:
#	Verify refreservation is limited by available space.
#
# STRATEGY:
#	1. Setting quota and refreservation on parent filesystem.
#	2. Get available space on sub-filesystem.
#	3. Verify refreservation is limited by available on it.
#
# TESTABILITY: explicit
#
# TEST_AUTOMATION_LEVEL: automated
#
# CODING_STATUS: COMPLETED (2007-11-05)
#
# __stc_assertion_end
#
################################################################################

verify_runnable "both"

function cleanup
{
	if is_global_zone ; then
		log_must $ZFS set refreservation=none $TESTPOOL
	fi
	log_must $ZFS destroy -rf $TESTPOOL/$TESTFS
	log_must $ZFS create $TESTPOOL/$TESTFS
	log_must $ZFS set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
}

log_assert "Verify refreservation is limited by available space."
log_onexit cleanup

pool=$TESTPOOL ; fs=$pool/$TESTFS ; subfs=$fs/subfs
log_must $ZFS create $subfs

typeset datasets
if is_global_zone; then
        datasets="$pool $fs"
else
        datasets="$fs"
fi

for ds in $datasets; do
	log_must $ZFS set quota=25M $ds
	log_must $ZFS set refreservation=15M $ds

	typeset  avail
	avail=5M
	log_must $ZFS set refreservation=$avail $subfs
	typeset mntpnt
	mntpnt=$(get_prop mountpoint $subfs)
	log_must $MKFILE $avail $mntpnt/$TESTFILE

	typeset  exceed
	exceed=15M
	log_mustnot $ZFS set refreservation=$exceed $subfs
	log_mustnot $MKFILE $exceed $mntpnt/$TESTFILE

	log_must $ZFS set quota=none $ds
done

log_pass "Verify refreservation is limited by available space."
