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