4 # The contents of this file are subject to the terms of the
5 # Common Development and Distribution License (the "License").
6 # You may not use this file except in compliance with the License.
8 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 # or http://www.opensolaris.org/os/licensing.
10 # See the License for the specific language governing permissions
11 # and limitations under the License.
13 # When distributing Covered Code, include this CDDL HEADER in each
14 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 # If applicable, add the following below this CDDL HEADER, with the
16 # fields enclosed by brackets "[]" replaced with your own identifying
17 # information: Portions Copyright [yyyy] [name of copyright owner]
23 # Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 # Use is subject to license terms.
28 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
31 . $STF_SUITE/tests/functional/reservation/reservation.cfg
34 # Function to set the reservation property of a dataset to
35 # 'none' and verify that it is correctly set using both the
36 # "normal" 'zfs get reservation' and the '-p' option which
37 # gives a numerical value.
39 function zero_reservation
44 log_must zfs set reservation=none $dataset
46 resv_val=`zfs get -H reservation $dataset | awk '{print $3}'`
47 if [[ $? -ne 0 ]]; then
48 log_fail "Unable to get reservation prop on $dataset"
49 elif [[ $resv_val != "none" ]]; then
50 log_fail "Reservation not 'none' ($resv_val) as expected"
54 resv_val=`zfs get -pH reservation $dataset | awk '{print $3}'`
55 if [[ $? -ne 0 ]]; then
56 log_fail "Unable to get reservation prop on $dataset"
57 elif [[ $resv_val -ne 0 ]]; then
58 log_fail "Reservation not 0 ($resv_val) as expected"
65 # Utility function to see if two values are within a certain specified
66 # limit of each other. Used primarily to check that a dataset's parent
67 # is correctly accounting for space used/available. Need this function as
68 # currently there is some slop in the way space is accounted (i.e. can't
69 # do a direct comparison).
71 function within_limits
77 if ((valA <= valB)); then
78 if (((valB - valA) <= delta)); then
81 elif ((valB <= valA)); then
82 if (((valA - valB) <= delta)); then
91 # Function to create and mount multiple filesystems. The filesystem
92 # will be named according to the name specified with a suffix value
93 # taken from the loop counter.
95 function create_multiple_fs # num_fs base_fs_name base_mnt_name
102 while (($iter < $count)); do
103 log_must zfs create ${FS_NAME}$iter
104 log_must zfs set mountpoint=${MNT_NAME}$iter ${FS_NAME}$iter
110 # This function compute the largest volume size which is multiple of volume
111 # block size (default 8K) and not greater than the largest expected volsize.
113 # $1 The largest expected volume size.
114 # $2 The volume block size
116 function floor_volsize #<largest_volsize> [volblksize]
118 typeset -l largest_volsize=$1
119 typeset -l volblksize=${2:-8192}
121 if ((largest_volsize < volblksize)); then
122 log_fail "The largest_volsize must be greater than volblksize."
124 typeset -l real_volsize
127 ((n = largest_volsize / volblksize))
128 ((largest_volsize = volblksize * n))
130 print $largest_volsize
134 # This function is a copy of a function by the same name in libzfs_dataset.c
135 # Its purpose is to reserve additional space for volume metadata so volumes
136 # don't unexpectedly run out of room.
138 # Note: This function can be used to do an estimate for a volume that has not
139 # yet been created. In this case, $vol is not a volume, but rather a pool in
140 # which a volume is going to be created. In this case, use default properties.
142 function volsize_to_reservation
145 typeset -i volsize=$2
147 typeset -i DN_MAX_INDBLKSHIFT=17
148 typeset -i SPA_BLKPTRSHIFT=7
149 typeset -i SPA_DVAS_PER_BP=3
151 typeset -i DNODES_PER_LEVEL_SHIFT=$((DN_MAX_INDBLKSHIFT - \
153 typeset -i DNODES_PER_LEVEL=$((1 << $DNODES_PER_LEVEL_SHIFT))
155 if ds_is_volume $vol; then
156 typeset -i ncopies=$(get_prop copies $vol)
157 typeset -i volblocksize=$(get_prop volblocksize $vol)
160 typeset -i volblocksize=8192
162 typeset -i nblocks=$((volsize / volblocksize))
165 while ((nblocks > 1)); do
166 ((nblocks += DNODES_PER_LEVEL - 1))
167 ((nblocks /= DNODES_PER_LEVEL))
171 ((numdb *= SPA_DVAS_PER_BP < ncopies + 1 ? SPA_DVAS_PER_BP : \
173 ((volsize *= ncopies))
174 ((numdb *= 1 << DN_MAX_INDBLKSHIFT))
180 # This function takes a pool name as an argument, and returns the largest (give
181 # or take some slop) -V value that can be used to create a volume in that pool.
182 # This is necessary because during volume creation, a reservation is created
183 # that will be larger than the value specified with -V, and potentially larger
184 # than the available space in the pool. See volsize_to_reservation().
186 function largest_volsize_from_pool
189 typeset -i poolsize=$(get_prop available $pool)
190 typeset -i volsize=$poolsize
194 # knock 50M off the volsize each time through
195 ((volsize -= 50 * 1024 * 1024))
196 nvolsize=$(volsize_to_reservation $pool $volsize)
197 nvolsize=$(floor_volsize $nvolsize)
198 ((nvolsize < poolsize)) && break