/tests/zfs-tests/tests/functional/persist_l2arc/persist_l2arc_006_pos.ksh

https://github.com/adilger/zfs · Korn Shell · 98 lines · 40 code · 23 blank · 35 comment · 1 complexity · 8582296da4cf21e8da5dadc306e13b11 MD5 · raw file 

    

  1. #!/bin/ksh -p
    2. 

  2. #
    3. 

  3. # CDDL HEADER START
    4. 

  4. #
    5. 

  5. # This file and its contents are supplied under the terms of the
    6. 

  6. # Common Development and Distribution License ("CDDL"), version 1.0.
    7. 

  7. # You may only use this file in accordance with the terms of version
    8. 

  8. # 1.0 of the CDDL.
    9. 

  9. #
    10. 

  10. # A full copy of the text of the CDDL should have accompanied this
    11. 

  11. # source.  A copy of the CDDL is also available via the Internet at
    12. 

  12. # http://www.illumos.org/license/CDDL.
    13. 

  13. #
    14. 

  14. # CDDL HEADER END
    15. 

  15. #
    16. 

  16. 

  17. #
    18. 

  18. # Copyright (c) 2020, George Amanakis. All rights reserved.
    19. 

  19. #
    20. 

  20. 

  21. . $STF_SUITE/include/libtest.shlib
    22. 

  22. . $STF_SUITE/tests/functional/persist_l2arc/persist_l2arc.cfg
    23. 

  23. 

  24. #
    25. 

  25. # DESCRIPTION:
    26. 

  26. #	Off/onlining an L2ARC device results in rebuilding L2ARC, vdev not
    27. 

  27. #	present.
    28. 

  28. #
    29. 

  29. # STRATEGY:
    30. 

  30. #	1. Create pool with a cache device.
    31. 

  31. #	2. Create a random file in that pool and random read for 30 sec.
    32. 

  32. #	3. Read the amount of log blocks written from the header of the
    33. 

  33. #		L2ARC device.
    34. 

  34. #	4. Offline the L2ARC device and export pool.
    35. 

  35. #	5. Import pool and online the L2ARC device.
    36. 

  36. #	6. Read the amount of log blocks rebuilt in arcstats and compare to
    37. 

  37. #		(3).
    38. 

  38. #	7. Check if the labels of the L2ARC device are intact.
    39. 

  39. #
    40. 

  40. 

  41. verify_runnable "global"
    42. 

  42. 

  43. log_assert "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev not present."
    44. 

  44. 

  45. function cleanup
    46. 

  46. {
    47. 

  47. 	if poolexists $TESTPOOL ; then
    48. 

  48. 		destroy_pool $TESTPOOL
    49. 

  49. 	fi
    50. 

  50. 

  51. 	log_must set_tunable32 L2ARC_NOPREFETCH $noprefetch
    52. 

  52. 	log_must set_tunable32 L2ARC_REBUILD_BLOCKS_MIN_L2SIZE \
    53. 

  53. 		$rebuild_blocks_min_l2size
    54. 

  54. }
    55. 

  55. log_onexit cleanup
    56. 

  56. 

  57. # L2ARC_NOPREFETCH is set to 0 to let L2ARC handle prefetches
    58. 

  58. typeset noprefetch=$(get_tunable L2ARC_NOPREFETCH)
    59. 

  59. typeset rebuild_blocks_min_l2size=$(get_tunable L2ARC_REBUILD_BLOCKS_MIN_L2SIZE)
    60. 

  60. log_must set_tunable32 L2ARC_NOPREFETCH 0
    61. 

  61. log_must set_tunable32 L2ARC_REBUILD_BLOCKS_MIN_L2SIZE 0
    62. 

  62. 

  63. typeset fill_mb=800
    64. 

  64. typeset cache_sz=$(( floor($fill_mb / 2) ))
    65. 

  65. export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M
    66. 

  66. 

  67. log_must truncate -s ${cache_sz}M $VDEV_CACHE
    68. 

  68. 

  69. log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE
    70. 

  70. 

  71. log_must fio $FIO_SCRIPTS/mkfiles.fio
    72. 

  72. log_must fio $FIO_SCRIPTS/random_reads.fio
    73. 

  73. 

  74. log_must zpool offline $TESTPOOL $VDEV_CACHE
    75. 

  75. log_must zpool export $TESTPOOL
    76. 

  76. 

  77. sleep 5
    78. 

  78. 

  79. typeset l2_rebuild_log_blk_start=$(get_arcstat l2_rebuild_log_blks)
    80. 

  80. 

  81. typeset l2_dh_log_blk=$(zdb -l $VDEV_CACHE | grep log_blk_count | \
    82. 

  82. 	awk '{print $2}')
    83. 

  83. 

  84. log_must zpool import -d $VDIR $TESTPOOL
    85. 

  85. log_must zpool online $TESTPOOL $VDEV_CACHE
    86. 

  86. 

  87. sleep 5
    88. 

  88. 

  89. typeset l2_rebuild_log_blk_end=$(get_arcstat l2_rebuild_log_blks)
    90. 

  90. 

  91. log_must test $l2_dh_log_blk -eq $(( $l2_rebuild_log_blk_end - $l2_rebuild_log_blk_start ))
    92. 

  92. log_must test $l2_dh_log_blk -gt 0
    93. 

  93. 

  94. log_must zdb -lq $VDEV_CACHE
    95. 

  95. 

  96. log_must zpool destroy -f $TESTPOOL
    97. 

  97. 

  98. log_pass "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev not present."
    99.