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# ident	"@(#)reservation_016_pos.ksh	1.2	07/01/09 SMI"
28#
29
30. $STF_SUITE/include/libtest.kshlib
31. $STF_SUITE/tests/reservation/reservation.kshlib
32
33###############################################################################
34#
35# __stc_assertion_start
36#
37# ID: reservation_016_pos
38#
39# DESCRIPTION:
40#
41# In pool with a full filesystem and a regular volume (with implicit
42# reservation) destroying the volume should allow more data to be written
43# to the filesystem
44#
45#
46# STRATEGY:
47# 1) Create a regular (non-sparse) volume
48# 2) Create a filesystem at the same level
49# 3) Fill up the filesystem
50# 4) Destroy the volume
51# 5) Verify can write more data to the filesystem
52#
53# TESTABILITY: explicit
54#
55# TEST_AUTOMATION_LEVEL: automated
56#
57# CODING_STATUS: COMPLETED (2005-07-19)
58#
59# __stc_assertion_end
60#
61################################################################################
62
63verify_runnable "global"
64
65log_assert "Destroying a regular volume with reservation allows more data to" \
66	" be written to top level filesystem"
67
68space_avail=`get_prop available $TESTPOOL`
69
70#
71# To make sure this test doesn't take too long to execute on
72# large pools, we calculate a volume size which will ensure we
73# have RESV_FREE_SPACE left free in the pool.
74#
75(( vol_set_size = space_avail * 95 / 100 ))
76vol_set_size=$(floor_volsize $vol_set_size $BLOCK_SIZE)
77
78# Creating a regular volume implicitly sets its reservation
79# property to the same value.
80log_must $ZFS create -b $BLOCK_SIZE -V $vol_set_size $TESTPOOL/$TESTVOL
81
82space_avail_still=`get_prop available $TESTPOOL`
83
84# Create a secondary filesystem to soak up what's left to get
85# to RESV_FREE_SPACE for the pool.
86space_avail_still=`get_prop available $TESTPOOL`
87(( zfs_res = space_avail_still - RESV_FREE_SPACE ))
88log_must $ZFS create -o refreservation=$zfs_res $TESTPOOL/$TESTFS2
89
90space_avail_still=`get_prop available $TESTPOOL`
91
92fill_size=`expr $space_avail_still + $RESV_TOLERANCE`
93write_count=`expr $fill_size / $BLOCK_SIZE`
94
95# Now fill up the filesystem (which doesn't have a reservation set
96# and thus will use up whatever free space is left in the pool).
97$FILE_WRITE -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE \
98        -c $write_count -d 0
99ret=$?
100if (( $ret != $ENOSPC )); then
101	log_fail "Did not get ENOSPC as expected (got $ret)."
102fi
103
104log_must $ZFS destroy -f $TESTPOOL/$TESTVOL
105
106log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE2 -b $BLOCK_SIZE \
107        -c 1000 -d 0
108
109log_pass "Destroying volume with reservation allows more data to" \
110	" be written to top level filesystem"
111