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#!/bin/ksh -p
#
# CDDL HEADER START
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
# CDDL HEADER END
#
#
# Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
# Copyright 2019 Joyent, Inc.
#
# DESCRIPTION:
# Ensure that the MMP thread is writing uberblocks.
#
# STRATEGY:
# 1. Set zfs_txg_timeout to large value
# 2. Create a zpool
# 3. Find the current "best" uberblock
# 4. Sleep for enough time for a potential uberblock update
# 5. Find the current "best" uberblock
# 6. If the uberblock never changed, fail
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/mmp/mmp.cfg
. $STF_SUITE/tests/functional/mmp/mmp.kshlib
verify_runnable "both"
function cleanup
{
default_cleanup_noexit
log_must set_tunable32 zfs_txg_timeout $TXG_TIMEOUT_DEFAULT
log_must rm -f $PREV_UBER $CURR_UBER
log_must mmp_clear_hostid
}
log_assert "mmp thread writes uberblocks (MMP)"
log_onexit cleanup
log_must set_tunable32 zfs_txg_timeout $TXG_TIMEOUT_LONG
log_must mmp_set_hostid $HOSTID1
default_setup_noexit $DISK
log_must zpool set multihost=on $TESTPOOL
log_must zdb -u $TESTPOOL > $PREV_UBER
log_must sleep 5
log_must zdb -u $TESTPOOL > $CURR_UBER
if diff -u "$CURR_UBER" "$PREV_UBER"; then
log_fail "mmp failed to update uberblocks"
fi
log_pass "mmp thread writes uberblocks (MMP) passed"
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