#! /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.
# See the License for the specific language governing permissions
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# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
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#

#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# ident	"@(#)reservation_002_pos.ksh	1.2	07/01/09 SMI"
#

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

###############################################################################
#
# __stc_assertion_start
#
# ID: reservation_002_pos
#
# DESCRIPTION:
#
# Reservation values cannot exceed the amount of space available
# in the pool. Verify that attempting to set a reservation greater
# than this value fails.
#
# STRATEGY:
# 1) Create a filesystem, regular and sparse volume
# 2) Get the space available in the pool
# 3) Attempt to set a reservation greater than the available space
# on the filesystem and verify it fails.
# 4) Verify that the reservation is still set to 'none' (or 0) on
# the filesystem.
# 5) Repeat 3-4 for regular and sparse volume
#
# TESTABILITY: explicit
#
# TEST_AUTOMATION_LEVEL: automated
#
# CODING_STATUS: COMPLETED (2005-07-19)
#
# __stc_assertion_end
#
################################################################################

verify_runnable "both"
 
log_assert "Reservation values cannot exceed the amount of space" \
	" available in the pool"

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 set reservation=none $TESTPOOL/$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`
        resv_size_set=`expr $space_avail + $RESV_DELTA`

	#
	# For regular (non-sparse) volumes the upper limit is determined
	# not by the space available in the pool but rather by the size
	# of the volume itself.
	#
	[[ $obj == $TESTPOOL/$TESTVOL ]] && \
		(( resv_size_set = vol_set_size + RESV_DELTA ))

	log_must zero_reservation $obj
	log_mustnot $ZFS set reservation=$resv_size_set $obj

	resv_size_get=`get_prop reservation $obj`

	if (( $resv_size_get != 0 )); then
                log_fail "Reservation value non-zero ($resv_size_get)"
        fi
done

log_pass "Attempting to set too large reservation failed as expected"
