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1 | #!/bin/ksh -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 | # | |
c1d9abf9 | 29 | # Copyright (c) 2013, 2016 by Delphix. All rights reserved. |
6bb24f4d BB |
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 | ||
51 | verify_runnable "global" | |
52 | ||
53 | log_assert "Destroying a regular volume with reservation allows more data to" \ | |
54 | " be written to top level filesystem" | |
55 | ||
56 | function cleanup | |
57 | { | |
58 | datasetexists $TESTPOOL/$TESTVOL && \ | |
c1d9abf9 | 59 | log_must zfs destroy $TESTPOOL/$TESTVOL |
6bb24f4d | 60 | |
c1d9abf9 JWK |
61 | [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1 |
62 | [[ -e $TESTDIR/$TESTFILE2 ]] && log_must rm -rf $TESTDIR/$TESTFILE2 | |
6bb24f4d BB |
63 | } |
64 | log_onexit cleanup | |
65 | ||
66 | space_avail=$(largest_volsize_from_pool $TESTPOOL) | |
67 | ||
68 | # | |
69 | # To make sure this test doesn't take too long to execute on | |
70 | # large pools, we calculate a volume size which will ensure we | |
71 | # have RESV_FREE_SPACE left free in the pool. | |
72 | # | |
73 | ((vol_set_size = space_avail - RESV_FREE_SPACE)) | |
74 | vol_set_size=$(floor_volsize $vol_set_size) | |
75 | ||
76 | # Creating a regular volume implicitly sets its reservation | |
77 | # property to the same value. | |
c1d9abf9 | 78 | log_must zfs create -V $vol_set_size $TESTPOOL/$TESTVOL |
6bb24f4d BB |
79 | |
80 | space_avail_still=$(get_prop available $TESTPOOL) | |
81 | fill_size=$((space_avail_still + $RESV_TOLERANCE)) | |
82 | write_count=$((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). | |
c1d9abf9 | 86 | file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0 |
6bb24f4d BB |
87 | ret=$? |
88 | if (($ret != $ENOSPC)); then | |
89 | log_fail "Did not get ENOSPC as expected (got $ret)." | |
90 | fi | |
91 | ||
c1d9abf9 | 92 | log_must zfs destroy -f $TESTPOOL/$TESTVOL |
6bb24f4d | 93 | |
c1d9abf9 JWK |
94 | log_must file_write -o create -f $TESTDIR/$TESTFILE2 \ |
95 | -b $(getconf PAGESIZE) -c 1000 -d 0 | |
6bb24f4d BB |
96 | |
97 | log_pass "Destroying volume with reservation allows more data to be written " \ | |
98 | "to top level filesystem" |