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 MMP updates uberblocks at the expected intervals. 23# 24# STRATEGY: 25# 1. Set zfs_txg_timeout to large value 26# 2. Create a zpool 27# 3. Clear multihost history 28# 4. Sleep, then collect count of uberblocks written 29# 5. If number of changes seen is less than min threshold, then fail 30# 6. If number of changes seen is more than max threshold, then fail 31# 32 33. $STF_SUITE/include/libtest.shlib 34. $STF_SUITE/tests/functional/mmp/mmp.cfg 35. $STF_SUITE/tests/functional/mmp/mmp.kshlib 36 37verify_runnable "both" 38 39UBER_CHANGES=0 40EXPECTED=$(($(echo $DISKS | wc -w) * 10)) 41FUDGE=$((EXPECTED * 20 / 100)) 42MIN=$((EXPECTED - FUDGE)) 43MAX=$((EXPECTED + FUDGE)) 44 45function cleanup 46{ 47 default_cleanup_noexit 48 set_tunable64 zfs_txg_timeout $TXG_TIMEOUT_DEFAULT 49 log_must mmp_clear_hostid 50} 51 52log_assert "Ensure MMP uberblocks update at the correct interval" 53log_onexit cleanup 54 55log_must set_tunable64 zfs_txg_timeout $TXG_TIMEOUT_LONG 56log_must mmp_set_hostid $HOSTID1 57 58default_setup_noexit "$DISKS" 59log_must zpool set multihost=on $TESTPOOL 60clear_mmp_history 61UBER_CHANGES=$(count_mmp_writes $TESTPOOL 10) 62 63log_note "Uberblock changed $UBER_CHANGES times" 64 65if [ $UBER_CHANGES -lt $MIN ]; then 66 log_fail "Fewer uberblock writes occured than expected ($EXPECTED)" 67fi 68 69if [ $UBER_CHANGES -gt $MAX ]; then 70 log_fail "More uberblock writes occured than expected ($EXPECTED)" 71fi 72 73log_pass "Ensure MMP uberblocks update at the correct interval passed" 74