1#! /usr/local/bin/ksh93 -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23#
24# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26
27. $STF_SUITE/include/libtest.kshlib
28. $STF_SUITE/tests/reservation/reservation.kshlib
29
30###############################################################################
31#
32# __stc_assertion_start
33#
34# ID: reservation_010_pos
35#
36# DESCRIPTION:
37#
38# In pool with a full filesystem and a filesystem with a reservation
39# destroying another filesystem should allow more data to be written to
40# the full filesystem
41#
42#
43# STRATEGY:
44# 1) Create a filesystem as dataset
45# 2) Create a filesystem at the same level
46# 3) Set a reservation on the dataset filesystem
47# 4) Fill up the second filesystem
48# 5) Destroy the dataset filesystem
49# 6) Verify can write more data to the full filesystem
50#
51# TESTABILITY: explicit
52#
53# TEST_AUTOMATION_LEVEL: automated
54#
55# CODING_STATUS: COMPLETED (2005-07-04)
56#
57# __stc_assertion_end
58#
59################################################################################
60
61verify_runnable "both"
62
63log_assert "Destroying top level filesystem with reservation allows more data to" \
64	" be written to another top level filesystem"
65
66log_must $ZFS create $TESTPOOL/$TESTFS1
67
68space_avail=`get_prop available $TESTPOOL`
69
70#
71# To make sure this test doesn't take too long to execute on
72# large pools, we calculate a reservation setting which when
73# applied to the dataset filesystem  will ensure we have
74# RESV_FREE_SPACE left free in the pool.
75#
76(( resv_size_set = space_avail - RESV_FREE_SPACE ))
77
78log_must $ZFS set reservation=$resv_size_set $TESTPOOL/$TESTFS1
79
80space_avail_still=`get_prop available $TESTPOOL`
81
82fill_size=`expr $space_avail_still + $RESV_TOLERANCE`
83write_count=`expr $fill_size / $BLOCK_SIZE`
84
85# Now fill up the filesystem (which doesn't have a reservation set
86# and thus will use up whatever free space is left in the pool).
87$FILE_WRITE -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE \
88        -c $write_count -d 0
89ret=$?
90if (( $ret != $ENOSPC )); then
91	log_fail "Did not get ENOSPC as expected (got $ret)."
92fi
93
94log_must $ZFS destroy -f $TESTPOOL/$TESTFS1
95
96log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE2 -b $BLOCK_SIZE \
97        -c 1000 -d 0
98
99log_pass "Destroying top level filesystem with reservation allows more data to" \
100	" be written to another top level filesystem"
101