tests/zfs-tests/callbacks/zfs_mmp.ksh

   1 #!/bin/ksh -p
   2
   3 #
   4 # This file and its contents are supplied under the terms of the
   5 # Common Development and Distribution License ("CDDL"), version 1.0.
   6 # You may only use this file in accordance with the terms of version
   7 # 1.0 of the CDDL.
   8 #
   9 # A full copy of the text of the CDDL should have accompanied this
  10 # source.  A copy of the CDDL is also available via the Internet at
  11 # http://www.illumos.org/license/CDDL.
  12 #
  13
  14 #
  15 # Copyright (c) 2017 by Lawrence Livermore National Security.
  16 # All rights reserved.
  17 #
  18
  19 # $1: number of lines to output (default: 40)
  20 typeset lines=${1:-40}
  21 typeset history=$(</sys/module/zfs/parameters/zfs_multihost_history)
  22
  23 if [ $history -eq 0 ]; then
  24         exit
  25 fi
  26
  27 for f in /proc/spl/kstat/zfs/*/multihost; do
  28         echo "================================================================="
  29         echo " Last $lines lines of $f"
  30         echo "================================================================="
  31
  32         sudo tail -n $lines $f
  33         sudo bash -c "echo > $f"
  34 done
  35
  36 echo "================================================================="
  37 echo " End of zfs multihost log"
  38 echo "================================================================="