xref: /titanic_52/usr/src/test/zfs-tests/tests/functional/reservation/reservation_016_pos.sh (revision f38cb554a534c6df738be3f4d23327e69888e634)
1#!/usr/bin/bash -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
28#
29# Copyright (c) 2013 by Delphix. All rights reserved.
30#
31
32. $STF_SUITE/include/libtest.shlib
33. $STF_SUITE/tests/functional/reservation/reservation.shlib
34
35#
36# DESCRIPTION:
37#
38# In pool with a full filesystem and a regular volume (with implicit
39# reservation) destroying the volume should allow more data to be written
40# to the filesystem
41#
42#
43# STRATEGY:
44# 1) Create a regular (non-sparse) volume
45# 2) Create a filesystem at the same level
46# 3) Fill up the filesystem
47# 4) Destroy the volume
48# 5) Verify can write more data to the filesystem
49#
50
51verify_runnable "global"
52
53log_assert "Destroying a regular volume with reservation allows more data to" \
54    " be written to top level filesystem"
55
56function cleanup
57{
58	datasetexists $TESTPOOL/$TESTVOL && \
59	    log_must $ZFS destroy $TESTPOOL/$TESTVOL
60
61	[[ -e $TESTDIR/$TESTFILE1 ]] && log_must $RM -rf $TESTDIR/$TESTFILE1
62	[[ -e $TESTDIR/$TESTFILE2 ]] && log_must $RM -rf $TESTDIR/$TESTFILE2
63}
64log_onexit cleanup
65
66space_avail=$(largest_volsize_from_pool $TESTPOOL)
67
68#
69# To make sure this test doesn't take too long to execute on
70# large pools, we calculate a volume size which will ensure we
71# have RESV_FREE_SPACE left free in the pool.
72#
73((vol_set_size = space_avail - RESV_FREE_SPACE))
74vol_set_size=$(floor_volsize $vol_set_size)
75
76# Creating a regular volume implicitly sets its reservation
77# property to the same value.
78log_must $ZFS create -V $vol_set_size $TESTPOOL/$TESTVOL
79
80space_avail_still=$(get_prop available $TESTPOOL)
81fill_size=$((space_avail_still + $RESV_TOLERANCE))
82write_count=$((fill_size / BLOCK_SIZE))
83
84# Now fill up the filesystem (which doesn't have a reservation set
85# and thus will use up whatever free space is left in the pool).
86$FILE_WRITE -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0
87ret=$?
88if (($ret != $ENOSPC)); then
89	log_fail "Did not get ENOSPC as expected (got $ret)."
90fi
91
92log_must $ZFS destroy -f $TESTPOOL/$TESTVOL
93
94log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE2 -b $PAGESIZE \
95    -c 1000 -d 0
96
97log_pass "Destroying volume with reservation allows more data to be written " \
98    "to top level filesystem"
99