tests/zfs-tests/tests/functional/mmp/mmp_reset_interval.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) 2017 by Lawrence Livermore National Security, LLC.
  19 #
  20
  21 # DESCRIPTION:
  22 #       Ensure that the MMP thread is notified when zfs_multihost_interval is
  23 #       reduced.
  24 #
  25 # STRATEGY:
  26 #       1. Set zfs_multihost_interval to much longer than the test duration
  27 #       2. Create a zpool and enable multihost
  28 #       3. Verify no MMP writes occurred
  29 #       4. Set zfs_multihost_interval to 1 second
  30 #       5. Sleep briefly
  31 #       6. Verify MMP writes began
  32 #
  33
  34 . $STF_SUITE/include/libtest.shlib
  35 . $STF_SUITE/tests/functional/mmp/mmp.cfg
  36 . $STF_SUITE/tests/functional/mmp/mmp.kshlib
  37
  38 verify_runnable "both"
  39
  40 function cleanup
  41 {
  42         default_cleanup_noexit
  43         log_must set_tunable64 zfs_multihost_interval $MMP_INTERVAL_DEFAULT
  44         log_must mmp_clear_hostid
  45 }
  46
  47 log_assert "mmp threads notified when zfs_multihost_interval reduced"
  48 log_onexit cleanup
  49
  50 log_must set_tunable64 zfs_multihost_interval $MMP_INTERVAL_HOUR
  51 log_must mmp_set_hostid $HOSTID1
  52
  53 default_setup_noexit $DISK
  54 log_must zpool set multihost=on $TESTPOOL
  55
  56 clear_mmp_history
  57 log_must set_tunable64 zfs_multihost_interval $MMP_INTERVAL_DEFAULT
  58 uber_count=$(count_uberblocks $TESTPOOL 1)
  59
  60 if [ $uber_count -eq 0 ]; then
  61         log_fail "mmp writes did not start when zfs_multihost_interval reduced"
  62 fi
  63
  64 log_pass "mmp threads notified when zfs_multihost_interval reduced"