tests/zfs-tests/tests/functional/zvol/zvol_swap/zvol_swap_004_pos.ksh

   1 #!/bin/bash
   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
  34 #
  35 # DESCRIPTION:
  36 #       When a swap zvol is added it is resized to be equal to 1/4 c_max,
  37 #       capped between 2G and 16G.
  38 #
  39 # STRATEGY:
  40 #       1. Determine what 1/4 arc_c_max is.
  41 #       2. Create a zvols in a variety of sizes.
  42 #       3. Add them as swap, and verify the volsize is resized correctly.
  43 #
  44
  45 verify_runnable "global"
  46
  47 log_assert "For an added swap zvol, (2G <= volsize <= 16G)"
  48
  49 typeset -i min max mem
  50 ((mem = $($KSTAT -p ::arcstats:c_max | $AWK '{print $2}') / 4))
  51 ((min = 2 * 1024 * 1024 * 1024))
  52 ((max = 16 * 1024 * 1024 * 1024))
  53
  54 for vbs in 512 1024 2048 4096 8192 16384 32768 65536 131072; do
  55         for multiplier in 1 32 16384 131072; do
  56                 ((volsize = vbs * multiplier))
  57                 vol="$TESTPOOL/vol_$volsize"
  58                 swapname="${ZVOL_DEVDIR}/$vol"
  59
  60                 # Create a sparse volume to test larger sizes
  61                 log_must $ZFS create -s -b $vbs -V $volsize $vol
  62                 log_must $SWAP -a $swapname
  63
  64                 if ((mem <= min)); then         # volsize should be 2G
  65                         new_volsize=$(get_prop volsize $vol)
  66                         ((new_volsize == min)) || log_fail \
  67                             "Unexpected volsize: $new_volsize"
  68                 elif ((mem >= max)); then       # volsize should be 16G
  69                         new_volsize=$(get_prop volsize $vol)
  70                         ((new_volsize == max)) || log_fail \
  71                             "Unexpected volsize: $new_volsize"
  72                 else                            # volsize should be 'mem'
  73                         new_volsize=$(get_prop volsize $vol)
  74                         ((new_volsize == mem)) || log_fail \
  75                             "Unexpected volsize: $new_volsize"
  76                 fi
  77
  78                 log_must $SWAP -d $swapname
  79                 log_must $ZFS destroy $vol
  80         done
  81 done
  82
  83 log_pass "For an added swap zvol, (2G <= volsize <= 16G)"