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 2008 Sun Microsystems, Inc. All rights reserved. 25# Use is subject to license terms. 26# 27 28# 29# Copyright (c) 2016 by Delphix. All rights reserved. 30# 31 32. $STF_SUITE/include/libtest.shlib 33 34# 35# DESCRIPTION: 36# Verify recursive snapshotting could not break ZFS. 37# 38# STRATEGY: 39# 1. Create deeply-nested filesystems until it is too long to create snap 40# 2. Verify zfs snapshot -r pool@snap will not break ZFS 41# 42 43verify_runnable "both" 44 45function cleanup 46{ 47 if datasetexists $initfs ; then 48 log_must zfs destroy -rf $initfs 49 fi 50} 51 52log_assert "Verify recursive snapshotting could not break ZFS." 53log_onexit cleanup 54 55initfs=$TESTPOOL/$TESTFS/$TESTFS 56basefs=$initfs 57typeset -i ret=0 len snaplen 58while ((ret == 0)); do 59 zfs create $basefs 60 zfs snapshot $basefs@snap1 61 ret=$? 62 63 if ((ret != 0)); then 64 len=$(echo $basefs| wc -c) 65 log_note "The deeply-nested filesystem len: $len" 66 67 # 68 # Make sure there are at lease 2 characters left 69 # for snapshot name space, otherwise snapshot name 70 # is incorrect 71 # 72 if ((len >= 255)); then 73 if datasetexists $basefs; then 74 log_must zfs destroy -r $basefs 75 fi 76 basefs=${basefs%/*} 77 len=$(echo $basefs| wc -c) 78 fi 79 break 80 fi 81 82 basefs=$basefs/$TESTFS 83done 84 85# Make snapshot name is longer than the max length 86((snaplen = 256 - len + 10)) 87snap=$(gen_dataset_name $snaplen "s") 88log_mustnot zfs snapshot -r $TESTPOOL@$snap 89 90log_must datasetnonexists $TESTPOOL@$snap 91while [[ $basefs != $TESTPOOL ]]; do 92 log_must datasetnonexists $basefs@$snap 93 basefs=${basefs%/*} 94done 95 96log_pass "Verify recursive snapshotting could not break ZFS." 97