zfs/tests/zfs-tests/tests/functional/reservation/reservation_018_pos.ksh

#!/bin/ksh -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.
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
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#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/reservation/reservation.shlib

#
# DESCRIPTION:
#
# Verify that reservation doesn't inherit its value from parent.
#
# STRATEGY:
# 1) Create a filesystem tree
# 2) Set reservation for parents
# 3) Verify that the 'reservation' for descendent doesnot inherit the value.
#

verify_runnable "both"

function cleanup
{
	datasetexists $fs_child && log_must zfs destroy $fs_child
	log_must zfs set reservation=$reserv_val $fs
}

log_onexit cleanup

log_assert "Verify that reservation doesnot inherit its value from parent."

fs=$TESTPOOL/$TESTFS
fs_child=$TESTPOOL/$TESTFS/$TESTFS

space_avail=$(get_prop available $fs)
reserv_val=$(get_prop reservation $fs)
typeset reservsize=$space_avail
((reservsize = reservsize / 2))
log_must zfs set reservation=$reservsize $fs

log_must zfs create $fs_child
rsv_space=$(get_prop reservation $fs_child)
[[ $rsv_space == $reservsize ]] && \
    log_fail "The reservation of child dataset inherits its value from parent."

log_pass "reservation doesnot inherit its value from parent as expected."