1#! /usr/local/bin/ksh93 -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. $STF_SUITE/include/libtest.kshlib 28. $STF_SUITE/tests/reservation/reservation.kshlib 29 30############################################################################### 31# 32# __stc_assertion_start 33# 34# ID: reservation_008_pos 35# 36# DESCRIPTION: 37# 38# Setting a reservation reserves a defined minimum amount of space for 39# a dataset, and prevents other datasets using that space. Verify that 40# reducing the reservation on a filesystem allows other datasets in 41# the pool to use that space. 42# 43# STRATEGY: 44# 1) Create multiple filesystems 45# 2) Set reservations on all bar one of the filesystems 46# 3) Fill up the one non-reserved filesystem 47# 4) Reduce one of the reservations and verify can write more 48# data into the non-reserved filesystem 49# 50# TESTABILITY: explicit 51# 52# TEST_AUTOMATION_LEVEL: automated 53# 54# CODING_STATUS: COMPLETED (2005-07-04) 55# 56# __stc_assertion_end 57# 58################################################################################ 59 60verify_runnable "both" 61 62log_assert "Verify reducing reservation allows other datasets to use space" 63 64log_must create_multiple_fs $RESV_NUM_FS $TESTPOOL/$TESTFS $TESTDIR 65 66space_avail=`get_prop available $TESTPOOL` 67space_used=`get_prop used $TESTPOOL` 68 69# 70# To make sure this test doesn't take too long to execute on 71# large pools, we calculate a reservation setting which when 72# applied to all bar one of the filesystems (RESV_NUM_FS-1) will 73# ensure we have RESV_FREE_SPACE left free in the pool, which we will 74# be able to quickly fill. 75# 76resv_space_avail=`expr $space_avail - $RESV_FREE_SPACE` 77num_resv_fs=`expr $RESV_NUM_FS - 1` # Number of FS to which resv will be applied 78resv_size_set=`expr $resv_space_avail / $num_resv_fs` 79 80# 81# We set the reservations now, rather than when we created the filesystems 82# to allow us to take into account space used by the filsystem metadata 83# 84# Note we don't set a reservation on the first filesystem we created, 85# hence num=1 rather than zero below. 86# 87typeset -i num=1 88while (( $num < $RESV_NUM_FS )); do 89 log_must $ZFS set reservation=$resv_size_set $TESTPOOL/$TESTFS$num 90 (( num = num + 1 )) 91done 92 93space_avail_still=`get_prop available $TESTPOOL` 94 95fill_size=`expr $space_avail_still + $RESV_TOLERANCE` 96write_count=`expr $fill_size / $BLOCK_SIZE` 97 98# Now fill up the first filesystem (which doesn't have a reservation set 99# and thus will use up whatever free space is left in the pool). 100num=0 101log_note "Writing to $TESTDIR$num/$TESTFILE1" 102 103$FILE_WRITE -o create -f $TESTDIR$num/$TESTFILE1 -b $BLOCK_SIZE \ 104 -c $write_count -d 0 105ret=$? 106if (( $ret != $ENOSPC )); then 107 log_fail "Did not get ENOSPC as expected (got $ret)." 108fi 109 110# Remove the reservation on one of the other filesystems and verify 111# can write more data to the original non-reservation filesystem. 112num=1 113log_must $ZFS set reservation=none $TESTPOOL/${TESTFS}$num 114num=0 115log_must $FILE_WRITE -o create -f ${TESTDIR}$num/$TESTFILE2 -b $BLOCK_SIZE \ 116 -c 1000 -d 0 117 118log_pass "reducing reservation allows other datasets to use space" 119