usr/src/test/zfs-tests/tests/functional/reservation/reservation_010_pos.sh

   1 #!/usr/bin/bash -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 2007 Sun Microsystems, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 #
  29 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
  30 #
  31
  32 . $STF_SUITE/include/libtest.shlib
  33 . $STF_SUITE/tests/functional/reservation/reservation.shlib
  34
  35 #
  36 # DESCRIPTION:
  37 #
  38 # In pool with a full filesystem and a filesystem with a reservation
  39 # destroying another filesystem should allow more data to be written to
  40 # the full filesystem
  41 #
  42 #
  43 # STRATEGY:
  44 # 1) Create a filesystem as dataset
  45 # 2) Create a filesystem at the same level
  46 # 3) Set a reservation on the dataset filesystem
  47 # 4) Fill up the second filesystem
  48 # 5) Destroy the dataset filesystem
  49 # 6) Verify can write more data to the full filesystem
  50 #
  51
  52 verify_runnable "both"
  53
  54 log_assert "Destroying top level filesystem with reservation allows more " \
  55     "data to be written to another top level filesystem"
  56
  57 function cleanup
  58 {
  59         datasetexists $TESTPOOL/$TESTFS1 && \
  60             log_must zfs destroy $TESTPOOL/$TESTFS1
  61
  62         [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1
  63         [[ -e $TESTDIR/$TESTFILE2 ]] && log_must rm -rf $TESTDIR/$TESTFILE2
  64 }
  65
  66 log_onexit cleanup
  67
  68 log_must zfs create $TESTPOOL/$TESTFS1
  69
  70 space_avail=`get_prop available $TESTPOOL`
  71
  72 #
  73 # To make sure this test doesn't take too long to execute on
  74 # large pools, we calculate a reservation setting which when
  75 # applied to the dataset filesystem  will ensure we have
  76 # RESV_FREE_SPACE left free in the pool.
  77 #
  78 ((resv_size_set = space_avail - RESV_FREE_SPACE))
  79
  80 log_must zfs set reservation=$resv_size_set $TESTPOOL/$TESTFS1
  81
  82 space_avail_still=`get_prop available $TESTPOOL`
  83
  84 fill_size=`expr $space_avail_still + $RESV_TOLERANCE`
  85 write_count=`expr $fill_size / $BLOCK_SIZE`
  86
  87 # Now fill up the filesystem (which doesn't have a reservation set
  88 # and thus will use up whatever free space is left in the pool).
  89 file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0
  90 ret=$?
  91 if (($ret != $ENOSPC)); then
  92         log_fail "Did not get ENOSPC as expected (got $ret)."
  93 fi
  94
  95 log_must zfs destroy -f $TESTPOOL/$TESTFS1
  96
  97 log_must file_write -o create -f $TESTDIR/$TESTFILE2 -b pagesize \
  98     -c 1000 -d 0
  99
 100 log_pass "Destroying top level filesystem with reservation allows more data " \
 101     "to be written to another top level filesystem"