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 2008 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/zvol/zvol_common.shlib
  34 
  35 #
  36 # DESCRIPTION:
  37 #       swaplow + swaplen must be less than or equal to the volume size.
  38 #
  39 # STRATEGY:
  40 #       1. Get test system page size and test volume size.
  41 #       2. Random get swaplow and swaplen.
  42 #       3. Verify swap -a should succeed when swaplow + swaplen <= volume size.
  43 #
  44 
  45 verify_runnable "global"
  46 
  47 assertion="Verify the sum of swaplow and swaplen is less or equal to volsize"
  48 log_assert $assertion
  49 
  50 typeset vol=$TESTPOOL/$TESTVOL
  51 typeset swapname="/dev/zvol/dsk/$vol"
  52 typeset -i pageblocks volblocks max_swaplow
  53 #
  54 # Both swaplow and swaplen are the desired length of
  55 # the swap area in 512-byte blocks.
  56 #
  57 ((pageblocks = $($PAGESIZE) / 512))
  58 ((volblocks = $(get_prop volsize $vol) / 512))
  59 ((max_swaplow = (volblocks - (pageblocks * 2))))
  60 
  61 for i in {0..10}; do
  62         swaplow=$($SHUF -n 1 -i ${pageblocks}-${max_swaplow})
  63         ((maxlen = max_swaplow - swaplow))
  64         swaplen=$($SHUF -n 1 -i ${pageblocks}-${maxlen})
  65         log_must $SWAP -a $swapname $swaplow $swaplen
  66         log_must $SWAP -d $swapname $swaplow
  67 done
  68 
  69 log_pass $assertion