usr/src/test/zfs-tests/tests/functional/nopwrite/nopwrite_negative.ksh

   1 #!/usr/bin/ksh
   2
   3 #
   4 # This file and its contents are supplied under the terms of the
   5 # Common Development and Distribution License ("CDDL"), version 1.0.
   6 # You may only use this file in accordance with the terms of version
   7 # 1.0 of the CDDL.
   8 #
   9 # A full copy of the text of the CDDL should have accompanied this
  10 # source.  A copy of the CDDL is also available via the Internet at
  11 # http://www.illumos.org/license/CDDL.
  12 #
  13
  14 #
  15 # Copyright (c) 2012, 2016 by Delphix. All rights reserved.
  16 #
  17
  18 . $STF_SUITE/include/libtest.shlib
  19 . $STF_SUITE/tests/functional/nopwrite/nopwrite.shlib
  20
  21 #
  22 # Description:
  23 # Verify that duplicate writes to a clone are accounted as new data if the
  24 # prerequisites for nopwrite are not met.
  25 #
  26 # Scenarios:
  27 # 1. The file in the origin ds is written without compression or sha256.
  28 # 2. The file in the origin ds is written before sha256 checksum is turned on.
  29 # 3. The clone does not have compression.
  30 # 4. The clone does not have the appropriate checksum.
  31 #
  32
  33 verify_runnable "global"
  34 origin="$TESTPOOL/$TESTFS"
  35 log_onexit cleanup
  36
  37 function cleanup
  38 {
  39         datasetexists $origin && log_must zfs destroy -R $origin
  40         log_must zfs create -o mountpoint=$TESTDIR $origin
  41 }
  42
  43 log_assert "nopwrite isn't enabled without the prerequisites"
  44
  45 # Data written into origin fs without compression or sha256
  46 dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
  47     >/dev/null 2>&1 || log_fail "dd of $TESTDIR/file failed."
  48 zfs snapshot $origin@a || log_fail "zfs snap failed"
  49 log_must zfs clone -o compress=on $origin@a $origin/clone
  50 log_must zfs set checksum=sha256 $origin/clone
  51 dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
  52     conv=notrunc >/dev/null 2>&1 || log_fail "dd failed."
  53 log_mustnot verify_nopwrite $origin $origin@a $origin/clone
  54 zfs destroy -R $origin@a || log_fail "zfs destroy failed"
  55 log_must rm -f $TESTDIR/file
  56
  57 # Data written to origin fs before checksum enabled
  58 log_must zfs set compress=on $origin
  59 dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
  60     >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed."
  61 log_must zfs set checksum=sha256 $origin
  62 zfs snapshot $origin@a || log_fail "zfs snap failed"
  63 log_must zfs clone $origin@a $origin/clone
  64 dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
  65     conv=notrunc >/dev/null 2>&1 || log_fail "dd failed."
  66 log_mustnot verify_nopwrite $origin $origin@a $origin/clone
  67 zfs destroy -R $origin@a || log_fail "zfs destroy failed"
  68 log_must rm -f $TESTDIR/file
  69
  70 # Clone with compression=off
  71 dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
  72     >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed."
  73 zfs snapshot $origin@a || log_fail "zfs snap failed"
  74 log_must zfs clone -o compress=off $origin@a $origin/clone
  75 dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
  76     conv=notrunc >/dev/null 2>&1 || log_fail "dd failed."
  77 log_mustnot verify_nopwrite $origin $origin@a $origin/clone
  78 zfs destroy -R $origin@a || log_fail "zfs destroy failed"
  79 log_must rm -f $TESTDIR/file
  80
  81 # Clone with fletcher4, rather than sha256
  82 dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
  83     >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed."
  84 zfs snapshot $origin@a || log_fail "zfs snap failed"
  85 log_must zfs clone -o checksum=fletcher4 $origin@a $origin/clone
  86 dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
  87     conv=notrunc >/dev/null 2>&1 || log_fail "dd failed."
  88 log_mustnot verify_nopwrite $origin $origin@a $origin/clone
  89
  90 log_pass "nopwrite isn't enabled without the prerequisites"