zfs/tests/zfs-tests/tests/functional/features/async_destroy/async_destroy_001_pos.ksh

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
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  23 #
  24 # Copyright (c) 2013, 2014 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 # Fill with 1G
  60 log_must $DD bs=1024k count=1024 if=/dev/zero of=/$TEST_FS/file
  61
  62 log_must $ZFS destroy $TEST_FS
  63
  64 #
  65 # We monitor the freeing property, to verify we can see blocks being
  66 # freed while the suspend/resume code is exerciesd.
  67 #
  68 t0=$SECONDS
  69 count=0
  70 while [[ $((SECONDS - t0)) -lt 10 ]]; do
  71         [[ "0" != "$($ZPOOL list -Ho freeing $TESTPOOL)" ]] && ((count++))
  72         [[ $count -gt 1 ]] && break
  73         $SLEEP 1
  74 done
  75
  76 [[ $count -eq 0 ]] && log_fail "Freeing property remained empty"
  77
  78 # Wait for everything to be freed.
  79 while [[ "0" != "$($ZPOOL list -Ho freeing $TESTPOOL)" ]]; do
  80         [[ $((SECONDS - t0)) -gt 180 ]] && \
  81             log_fail "Timed out waiting for freeing to drop to zero"
  82 done
  83
  84 # Check for leaked blocks.
  85 log_must $ZDB -b $TESTPOOL
  86
  87 log_pass "async_destroy can suspend and resume traversal"