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 (c) 2013 by Delphix. All rights reserved.
  25 #
  26 
  27 . $STF_SUITE/include/libtest.shlib
  28 
  29 #
  30 # DESCRIPTION:
  31 # Exercise the traversal suspend/resume code in async_destroy by
  32 # destroying a file system that has more blocks than we can free
  33 # in a single txg.
  34 #
  35 # STRATEGY:
  36 # 1. Create a file system
  37 # 2. Set recordsize to 512 to create the maximum number of blocks
  38 # 3. Set compression to off to force zero-ed blocks to be written
  39 # 4. dd a lot of data from /dev/zero to the file system
  40 # 5. Destroy the file system
  41 # 6. Wait for the freeing property to go to 0
  42 # 7. Use zdb to check for leaked blocks
  43 #
  44 
  45 TEST_FS=$TESTPOOL/async_destroy
  46 
  47 verify_runnable "both"
  48 
  49 function cleanup
  50 {
  51         datasetexists $TEST_FS && log_must $ZFS destroy $TEST_FS
  52 }
  53 
  54 log_onexit cleanup
  55 log_assert "async_destroy can suspend and resume traversal"
  56 
  57 log_must $ZFS create -o recordsize=512 -o compression=off $TEST_FS
  58 
  59 #
  60 # Fill with 2G
  61 #
  62 log_must $DD bs=1024k count=2048 if=/dev/zero of=/$TEST_FS/file
  63 
  64 log_must $ZFS destroy $TEST_FS
  65 
  66 count=0
  67 while [[ "0" != "$($ZPOOL list -Ho freeing $TESTPOOL)" ]]; do
  68         count=$((count + 1))
  69         sleep 1
  70 done
  71 
  72 #
  73 # We assert that the data took a few seconds to free to make sure that
  74 # we actually exercised the suspend/resume code. The destroy should
  75 # actually take much longer than this, so false positives are not likely.
  76 #
  77 log_must test $count -gt 5
  78 
  79 #
  80 # Check for leaked blocks.
  81 #
  82 log_must $ZDB -b $TESTPOOL
  83 
  84 log_pass "async_destroy can suspend and resume traversal"