#!/usr/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2008 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/snapshot/snapshot.cfg
#
# DESCRIPTION:
#
# Directory structure of snapshots reflects filesystem structure.
#
# STRATEGY:
#
# This test makes sure that the directory structure of snapshots is
# a proper reflection of the filesystem the snapshot was taken of.
#
# 1. Create a simple directory structure of files and directories
# 2. Take a snapshot of the filesystem
# 3. Modify original filesystem
# 4. Walk down the snapshot directory structure verifying it
# checking with both absolute and relative paths
#
verify_runnable "both"
function cleanup
{
cd $SAVED_DIR
if datasetexists $TESTPOOL/$TESTFS ; then
log_must zfs destroy -Rf $TESTPOOL/$TESTFS
fi
log_must zfs create $TESTPOOL/$TESTFS
log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
}
function verify_structure {
# check absolute paths
DIR=$PWD
verify_file $DIR/file1
verify_file $DIR/file2
verify_file $DIR/dir1/file3
verify_file $DIR/dir1/file4
verify_file $DIR/dir1/dir2/file5
verify_file $DIR/dir1/dir2/file6
verify_no_file $DIR/file99
# check relative paths
verify_file ./file1
verify_file ./file2
verify_file ./dir1/file3
verify_file ./dir1/file4
verify_file ./dir1/dir2/file5
verify_file ./dir1/dir2/file6
cd dir1
verify_file ../file1
verify_file ../file2
verify_file ./file3
verify_file ./file4
verify_no_file ../file99
cd dir2
verify_file ./file5
verify_file ./file6
verify_file ../file3
verify_file ../file4
verify_no_file ../file99
verify_file ../../file1
verify_file ../../file2
verify_no_file ../../file99
}
function verify_file {
if [ ! -e $1 ]
then
log_note "Working dir is $PWD"
log_fail "File $1 does not exist!"
fi
}
function verify_no_file {
if [ -e $1 ]
then
log_note "Working dir is $PWD"
log_fail "File $1 exists when it should not!"
fi
}
function verify_dir {
if [ ! -d $1 ]
then
log_note "Working dir is $PWD"
log_fail "Directory $1 does not exist!"
fi
}
log_assert "Directory structure of snapshots reflects filesystem structure."
log_onexit cleanup
SAVED_DIR=$PWD
#
# Create a directory structure with the following files
#
# ./file1
# ./file2
# ./dir1/file3
# ./dir1/file4
# ./dir1/dir2/file5
# ./dir1/dir2/file6
cd $TESTDIR
mkfile 10m file1
mkfile 20m file2
mkdir dir1
cd dir1
mkfile 10m file3
mkfile 20m file4
mkdir dir2
cd dir2
mkfile 10m file5
mkfile 20m file6
# Now walk the directory structure verifying it
cd $TESTDIR
verify_structure
# Take snapshots
log_must zfs snapshot $TESTPOOL/$TESTFS@snap_a
log_must zfs snapshot $TESTPOOL/$TESTFS@snap_b
# Change the filesystem structure by renaming files in the original structure
# The snapshot file structure should not change
cd $TESTDIR
log_must mv file2 file99
cd dir1
log_must mv file4 file99
cd dir2
log_must mv file6 file99
# verify the top level snapshot directories
verify_dir $TESTDIR/.zfs
verify_dir $TESTDIR/.zfs/snapshot
verify_dir $TESTDIR/.zfs/snapshot/snap_a
verify_dir $TESTDIR/.zfs/snapshot/snap_b
cd $TESTDIR/.zfs/snapshot/snap_a
verify_structure
cd $TESTDIR/.zfs/snapshot/snap_b
verify_structure
cd $TESTDIR/.zfs
verify_dir snapshot
cd $TESTDIR/.zfs/snapshot
verify_dir snap_a
verify_dir snap_b
cd snap_a
verify_dir ../snap_a
verify_dir ../snap_b
cd ..
verify_dir snap_a
verify_dir snap_b
log_pass "Directory structure of snapshots reflects filesystem structure."