tests/zfs-tests/tests/functional/trim/trim_config.ksh

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # This file and its contents are supplied under the terms of the
   6 # Common Development and Distribution License ("CDDL"), version 1.0.
   7 # You may only use this file in accordance with the terms of version
   8 # 1.0 of the CDDL.
   9 #
  10 # A full copy of the text of the CDDL should have accompanied this
  11 # source.  A copy of the CDDL is also available via the Internet at
  12 # http://www.illumos.org/license/CDDL.
  13 #
  14 # CDDL HEADER END
  15 #
  16
  17 #
  18 # Copyright (c) 2019 by Tim Chase. All rights reserved.
  19 # Copyright (c) 2019 Lawrence Livermore National Security, LLC.
  20 #
  21
  22 . $STF_SUITE/include/libtest.shlib
  23 . $STF_SUITE/tests/functional/trim/trim.kshlib
  24 . $STF_SUITE/tests/functional/trim/trim.cfg
  25
  26 #
  27 # DESCRIPTION:
  28 #       Check various pool geometries stripe, mirror, raidz
  29 #
  30 # STRATEGY:
  31 #       1. Create a pool on file vdevs to trim.
  32 #       2. Fill the pool to a known percentage of capacity.
  33 #       3. Verify the vdevs contain 75% or more allocated blocks.
  34 #       4. Remove all files making it possible to trim the entire pool.
  35 #       5. Manually trim the pool.
  36 #       6. Wait for trim to issue trim IOs for the free blocks.
  37 #       7. Verify the disks contain 30% or less allocated blocks.
  38 #       8. Repeat for test for striped, mirrored, and RAIDZ pools.
  39
  40 verify_runnable "global"
  41
  42 log_assert "Run 'zpool trim' verify pool disks were trimmed"
  43
  44 function cleanup
  45 {
  46         if poolexists $TESTPOOL; then
  47                 destroy_pool $TESTPOOL
  48         fi
  49
  50         log_must rm -f $TRIM_VDEVS
  51
  52         log_must set_tunable64 TRIM_EXTENT_BYTES_MIN $trim_extent_bytes_min
  53         log_must set_tunable64 TRIM_TXG_BATCH $trim_txg_batch
  54         log_must set_tunable64 VDEV_MIN_MS_COUNT $vdev_min_ms_count
  55 }
  56 log_onexit cleanup
  57
  58 # Minimum trim size is decreased to verify all trim sizes.
  59 typeset trim_extent_bytes_min=$(get_tunable TRIM_EXTENT_BYTES_MIN)
  60 log_must set_tunable64 TRIM_EXTENT_BYTES_MIN 4096
  61
  62 # Reduced TRIM_TXG_BATCH to make trimming more frequent.
  63 typeset trim_txg_batch=$(get_tunable TRIM_TXG_BATCH)
  64 log_must set_tunable64 TRIM_TXG_BATCH 8
  65
  66 # Increased metaslabs to better simulate larger more realistic devices.
  67 typeset vdev_min_ms_count=$(get_tunable VDEV_MIN_MS_COUNT)
  68 log_must set_tunable64 VDEV_MIN_MS_COUNT 32
  69
  70 typeset VDEV_MAX_MB=$(( floor(4 * MINVDEVSIZE * 0.75 / 1024 / 1024) ))
  71 typeset VDEV_MIN_MB=$(( floor(4 * MINVDEVSIZE * 0.30 / 1024 / 1024) ))
  72
  73 for type in "" "mirror" "raidz2" "draid"; do
  74
  75         if [[ "$type" = "" ]]; then
  76                 VDEVS="$TRIM_VDEV1"
  77         elif [[ "$type" = "mirror" ]]; then
  78                 VDEVS="$TRIM_VDEV1 $TRIM_VDEV2"
  79         elif [[ "$type" = "raidz2" ]]; then
  80                 VDEVS="$TRIM_VDEV1 $TRIM_VDEV2 $TRIM_VDEV3"
  81         elif [[ "$type" = "draid" ]]; then
  82                 VDEVS="$TRIM_VDEV1 $TRIM_VDEV2 $TRIM_VDEV3 $TRIM_VDEV4"
  83
  84                 # The per-vdev utilization is lower due to the capacity
  85                 # resilverd for the distributed spare.
  86                 VDEV_MAX_MB=$(( floor(4 * MINVDEVSIZE * 0.50 / 1024 / 1024) ))
  87         fi
  88
  89         log_must truncate -s $((4 * MINVDEVSIZE)) $VDEVS
  90         log_must zpool create -f $TESTPOOL $type $VDEVS
  91
  92         typeset availspace=$(get_prop available $TESTPOOL)
  93         typeset fill_mb=$(( floor(availspace * 0.90 / 1024 / 1024) ))
  94
  95         # Fill the pool, verify the vdevs are no longer sparse.
  96         file_write -o create -f /$TESTPOOL/file -b 1048576 -c $fill_mb -d R
  97         verify_vdevs "-ge" "$VDEV_MAX_MB" $VDEVS
  98
  99         # Remove the file, issue trim, verify the vdevs are now sparse.
 100         log_must rm /$TESTPOOL/file
 101         log_must timeout 120 zpool trim -w $TESTPOOL
 102         verify_vdevs "-le" "$VDEV_MIN_MB" $VDEVS
 103
 104         log_must zpool destroy $TESTPOOL
 105         log_must rm -f $VDEVS
 106 done
 107
 108 log_pass "Manual trim successfully shrunk vdevs"