tests/zfs-tests/tests/functional/removal/removal_multiple_indirection.ksh

   1 #! /bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # This file and its contents are supplied under the terms of the
   6 # Common Development and Distribution License ("CDDL"), version 1.0.
   7 # You may only use this file in accordance with the terms of version
   8 # 1.0 of the CDDL.
   9 #
  10 # A full copy of the text of the CDDL should have accompanied this
  11 # source.  A copy of the CDDL is also available via the Internet at
  12 # http://www.illumos.org/license/CDDL.
  13 #
  14 # CDDL HEADER END
  15 #
  16
  17 #
  18 # Copyright (c) 2014, 2016 by Delphix. All rights reserved.
  19 #
  20
  21 . $STF_SUITE/include/libtest.shlib
  22 . $STF_SUITE/tests/functional/removal/removal.kshlib
  23
  24 #
  25 # DESCRIPTION:
  26 #
  27 # For device removal a file's contents should transfer
  28 # completely from one disk to another. That should remain
  29 # to be the case even if multiple levels of indirection
  30 # are introduced as we remove more and more devices.
  31 #
  32 # STRATEGY:
  33 #
  34 # 1. We create a file of size 128k and we save its contents
  35 #    in a local variable.
  36 # 2. We set the limit of the maximum copied segment size of
  37 #    removals to 32k, so during removal our 128k file will
  38 #    be split to 4 blocks.
  39 # 3. We start removing disks and adding them back in a loop.
  40 #    This way the file is moved around and introduces split
  41 #    blocks.
  42 # 4. The loop itself tests that we don't have any problem
  43 #    when removing many devices. Within the loop we test
  44 #    that the files contents remain the same across transfers.
  45 #
  46
  47 TMPDIR=${TMPDIR:-$TEST_BASE_DIR}
  48 log_must mkfile $(($MINVDEVSIZE * 2)) $TMPDIR/dsk1
  49 log_must mkfile $(($MINVDEVSIZE * 2)) $TMPDIR/dsk2
  50 DISKS="$TMPDIR/dsk1 $TMPDIR/dsk2"
  51 REMOVEDISK=$TMPDIR/dsk1
  52
  53 log_must default_setup_noexit "$DISKS"
  54
  55 function cleanup
  56 {
  57         default_cleanup_noexit
  58         log_must rm -f $DISKS
  59
  60         # reset zfs_remove_max_segment to 1M
  61         set_tunable32 zfs_remove_max_segment 1048576
  62 }
  63
  64 log_onexit cleanup
  65
  66 # set zfs_remove_max_segment to 32k
  67 log_must set_tunable32 zfs_remove_max_segment 32768
  68
  69 log_must dd if=/dev/urandom of=$TESTDIR/$TESTFILE0 bs=128k count=1
  70 FILE_CONTENTS=`cat $TESTDIR/$TESTFILE0`
  71 log_must [ "x$(cat $TESTDIR/$TESTFILE0)" = "x$FILE_CONTENTS" ]
  72
  73 for i in {1..10}; do
  74         log_must zpool remove $TESTPOOL $TMPDIR/dsk1
  75         log_must wait_for_removal $TESTPOOL
  76         log_mustnot vdevs_in_pool $TESTPOOL $TMPDIR/dsk1
  77         log_must zpool add $TESTPOOL $TMPDIR/dsk1
  78
  79         log_must zinject -a
  80         log_must dd if=$TESTDIR/$TESTFILE0 of=/dev/null
  81         log_must [ "x$(cat $TESTDIR/$TESTFILE0)" = "x$FILE_CONTENTS" ]
  82
  83         log_must zpool remove $TESTPOOL $TMPDIR/dsk2
  84         log_must wait_for_removal $TESTPOOL
  85         log_mustnot vdevs_in_pool $TESTPOOL $TMPDIR/dsk2
  86         log_must zpool add $TESTPOOL $TMPDIR/dsk2
  87
  88         log_must zinject -a
  89         log_must dd if=$TESTDIR/$TESTFILE0 of=/dev/null
  90         log_must [ "x$(cat $TESTDIR/$TESTFILE0)" = "x$FILE_CONTENTS" ]
  91 done
  92
  93 log_pass "File contents transferred completely from one disk to another."