tests/zfs-tests/tests/functional/snapshot/snapshot_001_pos.ksh

   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 2007 Sun Microsystems, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 #
  29 # Copyright (c) 2013 by Delphix. All rights reserved.
  30 #
  31
  32 . $STF_SUITE/include/libtest.shlib
  33 . $STF_SUITE/tests/functional/snapshot/snapshot.cfg
  34
  35 #
  36 # DESCRIPTION:
  37 # A zfs file system snapshot is identical to
  38 # the originally snapshot'd file system, after the file
  39 # system has been changed. Uses 'sum -r'.
  40 #
  41 # STRATEGY:
  42 # 1. Create a file in the zfs file system
  43 # 2. Checksum the file for later comparison
  44 # 3. Create a snapshot of the dataset
  45 # 4. Append to the original file
  46 # 5. Verify the snapshot and file agree
  47 #
  48
  49 verify_runnable "both"
  50
  51 function cleanup
  52 {
  53         snapexists $SNAPFS
  54         if [[ $? -eq 0 ]]; then
  55                 log_must $ZFS destroy $SNAPFS
  56         fi
  57
  58         if [[ -e $SNAPDIR ]]; then
  59                 log_must $RM -rf $SNAPDIR > /dev/null 2>&1
  60         fi
  61
  62         if [[ -e $TESTDIR ]]; then
  63                 log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
  64         fi
  65 }
  66
  67 log_assert "Verify a file system snapshot is identical to original."
  68
  69 log_onexit cleanup
  70
  71 log_note "Create a file in the zfs filesystem..."
  72 log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE -b $BLOCKSZ \
  73     -c $NUM_WRITES -d $DATA
  74
  75 log_note "Sum the file, save for later comparison..."
  76 FILE_SUM=`$SUM -r $TESTDIR/$TESTFILE | $AWK  '{ print $1 }'`
  77 log_note "FILE_SUM = $FILE_SUM"
  78
  79 log_note "Create a snapshot and mount it..."
  80 log_must $ZFS snapshot $SNAPFS
  81
  82 log_note "Append to the original file..."
  83 log_must $FILE_WRITE -o append -f $TESTDIR/$TESTFILE -b $BLOCKSZ \
  84     -c $NUM_WRITES -d $DATA
  85
  86 SNAP_FILE_SUM=`$SUM -r $SNAPDIR/$TESTFILE | $AWK '{ print $1 }'`
  87 if [[ $SNAP_FILE_SUM -ne $FILE_SUM ]]; then
  88         log_fail "Sums do not match, aborting!! ($SNAP_FILE_SUM != $FILE_SUM)"
  89 fi
  90
  91 log_pass "Both Sums match. ($SNAP_FILE_SUM == $FILE_SUM)"