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# $FreeBSD$ 24 25# 26# Copyright 2008 Sun Microsystems, Inc. All rights reserved. 27# Use is subject to license terms. 28# 29# ident "@(#)zfs_snapshot_004_neg.ksh 1.2 08/05/14 SMI" 30# 31 32. $STF_SUITE/include/libtest.kshlib 33 34################################################################################# 35# 36# __stc_assertion_start 37# 38# ID: zfs_snapshot_004_neg 39# 40# DESCRIPTION: 41# Verify recursive snapshotting could not break ZFS. 42# 43# STRATEGY: 44# 1. Create deeply-nested filesystems until it is too long to create snap 45# 2. Verify zfs snapshot -r pool@snap will not break ZFS 46# 47# TESTABILITY: explicit 48# 49# TEST_AUTOMATION_LEVEL: automated 50# 51# CODING_STATUS: COMPLETED (2007-08-08) 52# 53# __stc_assertion_end 54# 55################################################################################ 56 57verify_runnable "both" 58 59function cleanup 60{ 61 if datasetexists $initfs ; then 62 log_must $ZFS destroy -rf $initfs 63 fi 64} 65 66log_assert "Verify recursive snapshotting could not break ZFS." 67log_onexit cleanup 68 69initfs=$TESTPOOL/$TESTFS/$TESTFS 70basefs=$initfs 71typeset -i ret=0 len snaplen 72while ((ret == 0)); do 73 $ZFS create $basefs 74 $ZFS snapshot $basefs@snap1 75 ret=$? 76 77 len=$($ECHO $basefs| $WC -c) 78 if ((ret != 0)); then 79 log_note "The deeply-nested filesystem len: $len" 80 # 81 # Make sure there are at lease 2 characters left 82 # for snapshot name space, otherwise snapshot name 83 # is incorrect 84 # 85 if ((len >= 255)); then 86 if datasetexists $basefs; then 87 log_must $ZFS destroy -r $basefs 88 fi 89 basefs=${basefs%/*} 90 len=$($ECHO $basefs| $WC -c) 91 fi 92 break 93 else 94 log_note "ZFS snapshot suceeded. len: $len" 95 fi 96 97 basefs=$basefs/$TESTFS 98done 99 100# Make snapshot name is longer than the max length 101((snaplen = 256 - len + 10)) 102snap=$(gen_dataset_name $snaplen "s") 103log_mustnot $ZFS snapshot -r $TESTPOOL@$snap 104 105log_must datasetnonexists $TESTPOOL@$snap 106while [[ $basefs != $TESTPOOL ]]; do 107 log_must datasetnonexists $basefs@$snap 108 basefs=${basefs%/*} 109done 110 111log_pass "Verify recursive snapshotting could not break ZFS." 112