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 2009 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 an implicit 39 # reservation, setting the reservation on the volume to 'none' should allow 40 # more data to be written to the filesystem. 41 # 42 # 43 # STRATEGY: 44 # 1) Create a regular non-sparse volume (which implicitly sets the reservation 45 # property to a value equal to the volume size) 46 # 2) Create a filesystem at the same level 47 # 3) Fill up the filesystem 48 # 4) Set the reservation on the volume to 'none' 49 # 5) Verify can write more data to the filesystem 50 # 51 52 verify_runnable "global" 53 54 log_assert "Setting volume reservation to 'none' allows more data to be " \ 55 "written to top level filesystem" 56 57 function cleanup 58 { 59 datasetexists $TESTPOOL/$TESTVOL && \ 60 log_must $ZFS destroy $TESTPOOL/$TESTVOL 61 62 [[ -e $TESTDIR/$TESTFILE1 ]] && log_must $RM -rf $TESTDIR/$TESTFILE1 63 [[ -e $TESTDIR/$TESTFILE2 ]] && log_must $RM -rf $TESTDIR/$TESTFILE2 64 } 65 log_onexit cleanup 66 67 space_avail=$(largest_volsize_from_pool $TESTPOOL) 68 69 # 70 # To make sure this test doesn't take too long to execute on 71 # large pools, we calculate a volume size which when applied 72 # to the volume will ensure we have RESV_FREE_SPACE 73 # left free in the pool which we can quickly fill. 74 # 75 ((resv_size_set = space_avail - RESV_FREE_SPACE)) 76 resv_size_set=$(floor_volsize $resv_size_set) 77 78 log_must $ZFS create -V $resv_size_set $TESTPOOL/$TESTVOL 79 80 space_avail_still=`get_prop available $TESTPOOL` 81 82 fill_size=$((space_avail_still + $RESV_TOLERANCE)) 83 write_count=$((fill_size / BLOCK_SIZE)) 84 85 # Now fill up the filesystem (which doesn't have a reservation set 86 # and thus will use up whatever free space is left in the pool). 87 $FILE_WRITE -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0 88 ret=$? 89 if (($ret != $ENOSPC)); then 90 log_fail "Did not get ENOSPC as expected (got $ret)." 91 fi 92 93 log_must $ZFS set refreservation=none $TESTPOOL/$TESTVOL 94 95 log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE2 -b $PAGESIZE \ 96 -c 1000 -d 0 97 98 log_pass "Setting top level volume reservation to 'none' allows more " \ 99 "data to be written to the top level filesystem"