tests/zfs-tests/tests/functional/replacement/resilver_restart_002.ksh

   1 #!/bin/ksh -p
   2
   3 #
   4 # CDDL HEADER START
   5 #
   6 # This file and its contents are supplied under the terms of the
   7 # Common Development and Distribution License ("CDDL"), version 1.0.
   8 # You may only use this file in accordance with the terms of version
   9 # 1.0 of the CDDL.
  10 #
  11 # A full copy of the text of the CDDL should have accompanied this
  12 # source.  A copy of the CDDL is also available via the Internet at
  13 # http://www.illumos.org/license/CDDL.
  14 #
  15 # CDDL HEADER END
  16 #
  17
  18 #
  19 # Copyright (c) 2020, Datto Inc. All rights reserved.
  20 #
  21
  22 . $STF_SUITE/include/libtest.shlib
  23 . $STF_SUITE/tests/functional/replacement/replacement.cfg
  24
  25 #
  26 # DESCRIPTION:
  27 # Testing resilver completes when scan errors are encountered, but relevant
  28 # DTL's have not been lost.
  29 #
  30 # STRATEGY:
  31 # 1. Create a pool (1k recordsize)
  32 # 2. Create a 32m file (32k records)
  33 # 3. Inject an error halfway through the file
  34 # 4. Start a resilver, ensure the error is triggered and that the resilver
  35 #    does not restart after finishing
  36 #
  37 # NB: use legacy scanning to ensure scan of specific block causes error
  38 #
  39
  40 function cleanup
  41 {
  42         log_must zinject -c all
  43         destroy_pool $TESTPOOL1
  44         rm -f ${VDEV_FILES[@]} $SPARE_VDEV_FILE
  45         log_must set_tunable32 SCAN_LEGACY $ORIG_SCAN_LEGACY
  46 }
  47
  48 log_assert "Check for resilver restarts caused by scan errors"
  49
  50 ORIG_SCAN_LEGACY=$(get_tunable SCAN_LEGACY)
  51
  52 log_onexit cleanup
  53
  54 # use legacy scan to ensure injected error will be triggered
  55 log_must set_tunable32 SCAN_LEGACY 1
  56
  57  # create the pool and a 32M file (32k blocks)
  58 log_must truncate -s $VDEV_FILE_SIZE ${VDEV_FILES[0]} $SPARE_VDEV_FILE
  59 log_must zpool create -f -O recordsize=1k $TESTPOOL1 ${VDEV_FILES[0]}
  60 log_must dd if=/dev/urandom of=/$TESTPOOL1/file bs=1M count=32 > /dev/null 2>&1
  61
  62 # determine objset/object
  63 objset=$(zdb -d $TESTPOOL1/ | sed -ne 's/.*ID \([0-9]*\).*/\1/p')
  64 object=$(ls -i /$TESTPOOL1/file | awk '{print $1}')
  65
  66 # inject event to cause error during resilver
  67 log_must zinject -b `printf "%x:%x:0:3fff" $objset $object` $TESTPOOL1
  68
  69 # clear events and start resilver
  70 log_must zpool events -c
  71 log_must zpool attach $TESTPOOL1 ${VDEV_FILES[0]} $SPARE_VDEV_FILE
  72
  73 log_note "waiting for read errors to start showing up"
  74 for iter in {0..59}
  75 do
  76         zpool sync $TESTPOOL1
  77         err=$(zpool status $TESTPOOL1 | grep ${VDEV_FILES[0]} | awk '{print $3}')
  78         (( $err > 0 )) && break
  79         sleep 1
  80 done
  81
  82 (( $err == 0 )) && log_fail "Unable to induce errors in resilver"
  83
  84 log_note "waiting for resilver to finish"
  85 for iter in {0..59}
  86 do
  87         finish=$(zpool events | grep "sysevent.fs.zfs.resilver_finish" | wc -l)
  88         (( $finish > 0 )) && break
  89         sleep 1
  90 done
  91
  92 (( $finish == 0 )) && log_fail "resilver took too long to finish"
  93
  94 # wait a few syncs to ensure that zfs does not restart the resilver
  95 log_must zpool sync $TESTPOOL1
  96 log_must zpool sync $TESTPOOL1
  97
  98 # check if resilver was restarted
  99 start=$(zpool events | grep "sysevent.fs.zfs.resilver_start" | wc -l)
 100 (( $start != 1 )) && log_fail "resilver restarted unnecessarily"
 101
 102 log_pass "Resilver did not restart unnecessarily from scan errors"