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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 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 | ||
52 | verify_runnable "both" | |
53 | ||
54 | log_assert "Destroying top level filesystem with reservation allows more " \ | |
55 | "data to be written to another top level filesystem" | |
56 | ||
57 | function cleanup | |
58 | { | |
59 | datasetexists $TESTPOOL/$TESTFS1 && \ | |
c1d9abf9 | 60 | log_must zfs destroy $TESTPOOL/$TESTFS1 |
6bb24f4d | 61 | |
c1d9abf9 JWK |
62 | [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1 |
63 | [[ -e $TESTDIR/$TESTFILE2 ]] && log_must rm -rf $TESTDIR/$TESTFILE2 | |
6bb24f4d BB |
64 | } |
65 | ||
66 | log_onexit cleanup | |
67 | ||
c1d9abf9 | 68 | log_must zfs create $TESTPOOL/$TESTFS1 |
6bb24f4d BB |
69 | |
70 | space_avail=`get_prop available $TESTPOOL` | |
71 | ||
72 | # | |
73 | # To make sure this test doesn't take too long to execute on | |
74 | # large pools, we calculate a reservation setting which when | |
75 | # applied to the dataset filesystem will ensure we have | |
76 | # RESV_FREE_SPACE left free in the pool. | |
77 | # | |
78 | ((resv_size_set = space_avail - RESV_FREE_SPACE)) | |
79 | ||
c1d9abf9 | 80 | log_must zfs set reservation=$resv_size_set $TESTPOOL/$TESTFS1 |
6bb24f4d BB |
81 | |
82 | space_avail_still=`get_prop available $TESTPOOL` | |
83 | ||
84 | fill_size=`expr $space_avail_still + $RESV_TOLERANCE` | |
85 | write_count=`expr $fill_size / $BLOCK_SIZE` | |
86 | ||
87 | # Now fill up the filesystem (which doesn't have a reservation set | |
88 | # and thus will use up whatever free space is left in the pool). | |
c1d9abf9 | 89 | file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0 |
6bb24f4d BB |
90 | ret=$? |
91 | if (($ret != $ENOSPC)); then | |
92 | log_fail "Did not get ENOSPC as expected (got $ret)." | |
93 | fi | |
94 | ||
c1d9abf9 | 95 | log_must zfs destroy -f $TESTPOOL/$TESTFS1 |
6bb24f4d | 96 | |
c1d9abf9 JWK |
97 | log_must file_write -o create -f $TESTDIR/$TESTFILE2 \ |
98 | -b $(getconf PAGESIZE) -c 1000 -d 0 | |
6bb24f4d BB |
99 | |
100 | log_pass "Destroying top level filesystem with reservation allows more data " \ | |
101 | "to be written to another top level filesystem" |