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 2009 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/refreserv/refreserv.cfg
  34 
  35 #
  36 # DESCRIPTION:
  37 #       Setting full size as refreservation, verify no snapshot can be created.
  38 #
  39 # STRATEGY:
  40 #       1. Setting full size as refreservation on pool
  41 #       2. Verify no snapshot can be created on this pool
  42 #       3. Setting full size as refreservation on filesystem
  43 #       4. Verify no snapshot can be created on it and its subfs
  44 #
  45 
  46 verify_runnable "both"
  47 
  48 function cleanup
  49 {
  50         if is_global_zone ; then
  51                 log_must $ZFS set refreservation=none $TESTPOOL
  52 
  53                 if datasetexists $TESTPOOL@snap ; then
  54                         log_must $ZFS destroy -f $TESTPOOL@snap
  55                 fi
  56         fi
  57         log_must $ZFS destroy -rf $TESTPOOL/$TESTFS
  58         log_must $ZFS create $TESTPOOL/$TESTFS
  59         log_must $ZFS set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
  60 }
  61 
  62 # This function iteratively increases refreserv to its highest possible
  63 # value. Simply setting refreserv == quota can allow enough writes to
  64 # complete that the test fails.
  65 function max_refreserv
  66 {
  67         typeset ds=$1
  68         typeset -i incsize=131072
  69         typeset -i rr=$(get_prop available $ds)
  70 
  71         log_must $ZFS set refreserv=$rr $ds
  72         while :; do
  73                 $ZFS set refreserv=$((rr + incsize)) $ds >/dev/null 2>&1
  74                 if [[ $? == 0 ]]; then
  75                         ((rr += incsize))
  76                         continue
  77                 else
  78                         ((incsize /= 2))
  79                         ((incsize == 0)) && break
  80                 fi
  81         done
  82 }
  83 
  84 
  85 log_assert "Setting full size as refreservation, verify no snapshot " \
  86         "can be created."
  87 log_onexit cleanup
  88 
  89 log_must $ZFS create $TESTPOOL/$TESTFS/subfs
  90 
  91 typeset datasets
  92 if is_global_zone; then
  93         datasets="$TESTPOOL $TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs"
  94 else
  95         datasets="$TESTPOOL/$TESTFS $TESTPOOL/$TESTFS/subfs"
  96 fi
  97 
  98 for ds in $datasets; do
  99         #
 100         # Verify refreservation on dataset
 101         #
 102         log_must $ZFS set quota=25M $ds
 103         max_refreserv $ds
 104         log_mustnot $ZFS snapshot $ds@snap
 105         if datasetexists $ds@snap ; then
 106                 log_fail "ERROR: $ds@snap should not exists."
 107         fi
 108 
 109         log_must $ZFS set quota=none $ds
 110         log_must $ZFS set refreservation=none $ds
 111 done
 112 
 113 log_pass "Setting full size as refreservation, verify no snapshot " \
 114         "can be created."