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 2009 Sun Microsystems, Inc. All rights reserved. 25# Use is subject to license terms. 26# 27 28# 29# Copyright (c) 2013, 2016 by Delphix. All rights reserved. 30# 31 32. $STF_SUITE/include/libtest.shlib 33. $STF_SUITE/tests/functional/refreserv/refreserv.cfg 34 35# 36# DESCRIPTION: 37# Setting full size as refreservation, verify no snapshot can be created. 38# 39# STRATEGY: 40# 1. Setting full size as refreservation on pool 41# 2. Verify no snapshot can be created on this pool 42# 3. Setting full size as refreservation on filesystem 43# 4. Verify no snapshot can be created on it and its subfs 44# 45 46verify_runnable "both" 47 48function cleanup 49{ 50 if is_global_zone ; then 51 log_must zfs set refreservation=none $TESTPOOL 52 53 if datasetexists $TESTPOOL@snap ; then 54 log_must zfs destroy -f $TESTPOOL@snap 55 fi 56 fi 57 log_must zfs destroy -rf $TESTPOOL/$TESTFS 58 log_must zfs create $TESTPOOL/$TESTFS 59 log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS 60} 61 62# This function iteratively increases refreserv to its highest possible 63# value. Simply setting refreserv == quota can allow enough writes to 64# complete that the test fails. 65function max_refreserv 66{ 67 typeset ds=$1 68 typeset -i incsize=131072 69 typeset -i rr=$(get_prop available $ds) 70 71 log_must zfs set refreserv=$rr $ds 72 while :; do 73 zfs set refreserv=$((rr + incsize)) $ds >/dev/null 2>&1 74 if [[ $? == 0 ]]; then 75 ((rr += incsize)) 76 continue 77 else 78 ((incsize /= 2)) 79 ((incsize == 0)) && break 80 fi 81 done 82} 83 84 85log_assert "Setting full size as refreservation, verify no snapshot " \ 86 "can be created." 87log_onexit cleanup 88 89log_must zfs create $TESTPOOL/$TESTFS/subfs 90 91typeset datasets 92if is_global_zone; then 93 datasets="$TESTPOOL $TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs" 94else 95 datasets="$TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs" 96fi 97 98for ds in $datasets; do 99 # 100 # Verify refreservation on dataset 101 # 102 log_must zfs set quota=25M $ds 103 max_refreserv $ds 104 log_mustnot zfs snapshot $ds@snap 105 if datasetexists $ds@snap ; then 106 log_fail "ERROR: $ds@snap should not exists." 107 fi 108 109 log_must zfs set quota=none $ds 110 log_must zfs set refreservation=none $ds 111done 112 113log_pass "Setting full size as refreservation, verify no snapshot " \ 114 "can be created." 115