18569Sgziemski#!/bin/ksh -p
212732Sdholmes#
38569Sgziemski# CDDL HEADER START
48569Sgziemski#
58569Sgziemski# This file and its contents are supplied under the terms of the
68569Sgziemski# Common Development and Distribution License ("CDDL"), version 1.0.
78569Sgziemski# You may only use this file in accordance with the terms of version
88569Sgziemski# 1.0 of the CDDL.
98569Sgziemski#
108569Sgziemski# A full copy of the text of the CDDL should have accompanied this
118569Sgziemski# source.  A copy of the CDDL is also available via the Internet at
128569Sgziemski# http://www.illumos.org/license/CDDL.
138569Sgziemski#
148569Sgziemski# CDDL HEADER END
158569Sgziemski#
168569Sgziemski
178569Sgziemski#
188569Sgziemski# Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
198569Sgziemski#
208569Sgziemski
218569Sgziemski# DESCRIPTION:
228569Sgziemski#	Ensure that MMP updates uberblocks with MMP info at expected intervals. 
238569Sgziemski#
248569Sgziemski# STRATEGY:
258569Sgziemski#	1. Set TXG_TIMEOUT to large value
268569Sgziemski#	2. Create a zpool
278569Sgziemski#	3. Clear multihost history
288569Sgziemski#	4. Sleep, then collect count of uberblocks written
298569Sgziemski#	5. If number of changes seen is less than min threshold, then fail
308569Sgziemski#	6. If number of changes seen is more than max threshold, then fail
318569Sgziemski#	7. Sequence number increments when no TXGs are syncing
328569Sgziemski#
338569Sgziemski
348569Sgziemski. $STF_SUITE/include/libtest.shlib
358569Sgziemski. $STF_SUITE/tests/functional/mmp/mmp.cfg
368569Sgziemski. $STF_SUITE/tests/functional/mmp/mmp.kshlib
378839Sgziemski
388569Sgziemskiverify_runnable "both"
398839Sgziemski
408569SgziemskiUBER_CHANGES=0
419173SgziemskiEXPECTED=$(($(echo $DISKS | wc -w) * 10))
429173SgziemskiFUDGE=$((EXPECTED * 20 / 100))
439173SgziemskiMIN_UB_WRITES=$((EXPECTED - FUDGE))
449173SgziemskiMAX_UB_WRITES=$((EXPECTED + FUDGE))
459173SgziemskiMIN_SEQ_VALUES=7
469173Sgziemski
479173Sgziemskifunction cleanup
4810726Sgziemski{
4910726Sgziemski	default_cleanup_noexit
5010726Sgziemski	log_must set_tunable64 MULTIHOST_INTERVAL $MMP_INTERVAL_DEFAULT
5110726Sgziemski	set_tunable64 TXG_TIMEOUT $TXG_TIMEOUT_DEFAULT
5210726Sgziemski	log_must mmp_clear_hostid
538569Sgziemski}
54
55log_assert "Ensure MMP uberblocks update at the correct interval"
56log_onexit cleanup
57
58log_must set_tunable64 TXG_TIMEOUT $TXG_TIMEOUT_LONG
59log_must mmp_set_hostid $HOSTID1
60
61default_setup_noexit "$DISKS"
62log_must zpool set multihost=on $TESTPOOL
63clear_mmp_history
64UBER_CHANGES=$(count_mmp_writes $TESTPOOL 10)
65
66log_note "Uberblock changed $UBER_CHANGES times"
67
68if [ $UBER_CHANGES -lt $MIN_UB_WRITES ]; then
69	log_fail "Fewer uberblock writes occurred than expected ($EXPECTED)"
70fi
71
72if [ $UBER_CHANGES -gt $MAX_UB_WRITES ]; then
73	log_fail "More uberblock writes occurred than expected ($EXPECTED)"
74fi
75
76log_must set_tunable64 MULTIHOST_INTERVAL $MMP_INTERVAL_MIN
77SEQ_BEFORE=$(zdb -luuuu ${DISK[0]} | awk '/mmp_seq/ {if ($NF>max) max=$NF}; END {print max}')
78sleep 1
79SEQ_AFTER=$(zdb  -luuuu ${DISK[0]} | awk '/mmp_seq/ {if ($NF>max) max=$NF}; END {print max}')
80if [ $((SEQ_AFTER - SEQ_BEFORE)) -lt $MIN_SEQ_VALUES ]; then
81	zdb -luuuu ${DISK[0]}
82	log_fail "ERROR: mmp_seq did not increase by $MIN_SEQ_VALUES; before $SEQ_BEFORE after $SEQ_AFTER"
83fi
84
85log_pass "Ensure MMP uberblocks update at the correct interval passed"
86