#! /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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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# $FreeBSD: releng/12.3/tests/sys/cddl/zfs/tests/reservation/reservation_014_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	"@(#)reservation_014_pos.ksh	1.3	09/08/06 SMI"
#

. $STF_SUITE/include/libtest.kshlib
. $STF_SUITE/tests/reservation/reservation.kshlib

###############################################################################
#
# __stc_assertion_start
#
# ID: reservation_014_pos
#
# DESCRIPTION:
#
# A reservation cannot exceed the quota on a dataset
#
# STRATEGY:
# 1) Create a filesystem and volume
# 2) Set a quota on the filesystem
# 3) Attempt to set a reservation larger than the quota. Verify
# that the attempt fails.
# 4) Repeat 2-3 for volume
#
# TESTABILITY: explicit
#
# TEST_AUTOMATION_LEVEL: automated
#
# CODING_STATUS: COMPLETED (2005-07-04)
#
# __stc_assertion_end
#
################################################################################

verify_runnable "both"

log_assert "Verify cannot set reservation larger than quota"

space_avail=`get_prop available $TESTPOOL`

if ! is_global_zone ; then
	OBJ_LIST=""
else
	OBJ_LIST="$TESTPOOL/$TESTVOL $TESTPOOL/$TESTVOL2"

        (( vol_set_size = space_avail / 4 ))
	vol_set_size=$(floor_volsize $vol_set_size)
	(( sparse_vol_set_size = space_avail * 4 ))
	sparse_vol_set_size=$(floor_volsize $sparse_vol_set_size)


	log_must $ZFS create -V $vol_set_size $TESTPOOL/$TESTVOL
	log_must $ZFS create -s -V $sparse_vol_set_size $TESTPOOL/$TESTVOL2
fi

for obj in $TESTPOOL/$TESTFS $OBJ_LIST ; do

        space_avail=`get_prop available $TESTPOOL`
        (( quota_set_size = space_avail / 3 ))

	#
	# A regular (non-sparse) volume's size is effectively 
	# its quota so only need to explicitly set quotas for 
	# filesystems and datasets.
	#
	# A volumes size is effectively its quota. The maximum 
	# reservation value that can be set on a volume is 
	# determined by the size of the volume or the amount of
	# space in the pool, whichever is smaller.
	# 
	if [[ $obj == $TESTPOOL/$TESTFS ]]; then
                log_must $ZFS set quota=$quota_set_size $obj
		(( resv_set_size = quota_set_size + RESV_SIZE ))

	elif [[ $obj == $TESTPOOL/$TESTVOL2 ]] ; then

		(( resv_set_size = sparse_vol_set_size + RESV_SIZE ))

	elif [[ $obj == $TESTPOOL/$TESTVOL ]] ; then

		(( resv_set_size = vol_set_size + RESV_SIZE ))
	fi

	orig_quota=`get_prop quota $obj`

        log_mustnot $ZFS set reservation=$resv_set_size $obj
	new_quota=`get_prop quota $obj`
		
	if [[ $orig_quota != $new_quota ]]; then
		log_fail "Quota value changed from $orig_quota " \
				"to $new_quota"
	fi

	if [[ $obj == $TESTPOOL/$TESTFS ]]; then
        	log_must $ZFS set quota=none $obj
	fi
done

log_pass "As expected cannot set reservation larger than quota"
