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 https://opensource.org/licenses/CDDL-1.0. 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 datasetexists $TESTPOOL@snap && destroy_dataset $TESTPOOL@snap -f 54 fi 55 destroy_dataset $TESTPOOL/$TESTFS -rf 56 log_must zfs create $TESTPOOL/$TESTFS 57 log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS 58} 59 60# This function iteratively increases refreserv to its highest possible 61# value. Simply setting refreserv == quota can allow enough writes to 62# complete that the test fails. 63function max_refreserv 64{ 65 typeset ds=$1 66 typeset -i incsize=131072 67 typeset -i rr=$(get_prop available $ds) 68 69 log_must zfs set refreserv=$rr $ds 70 while :; do 71 if zfs set refreserv=$((rr + incsize)) $ds >/dev/null 2>&1; then 72 ((rr += incsize)) 73 continue 74 else 75 ((incsize /= 2)) 76 ((incsize == 0)) && break 77 fi 78 done 79} 80 81 82log_assert "Setting full size as refreservation, verify no snapshot " \ 83 "can be created." 84log_onexit cleanup 85 86log_must zfs create $TESTPOOL/$TESTFS/subfs 87 88typeset datasets 89if is_global_zone; then 90 datasets="$TESTPOOL $TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs" 91else 92 datasets="$TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs" 93fi 94 95for ds in $datasets; do 96 # 97 # Verify refreservation on dataset 98 # 99 log_must zfs set quota=25M $ds 100 max_refreserv $ds 101 log_mustnot zfs snapshot $ds@snap 102 if datasetexists $ds@snap ; then 103 log_fail "ERROR: $ds@snap should not exists." 104 fi 105 106 log_must zfs set quota=none $ds 107 log_must zfs set refreservation=none $ds 108done 109 110log_pass "Setting full size as refreservation, verify no snapshot " \ 111 "can be created." 112