xref: /illumos-gate/usr/src/test/zfs-tests/tests/functional/mmp/multihost_history.ksh (revision e0f1c0afa46cc84d4b1e40124032a9a87310386e)
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#	zfs_multihost_history should report both writes issued and gaps
23#
24# STRATEGY:
25#	1. Create a 2-vdev pool with mmp enabled
26#	2. Delay writes by 2*MMP_INTERVAL_DEFAULT
27#	3. Check multihost_history for both issued writes, and for gaps where
28#	no write could be issued because all vdevs are busy
29#
30# During the first MMP_INTERVAL period 2 MMP writes will be issued - one to
31# each vdev.  At the third scheduled attempt to write, at time t0+MMP_INTERVAL,
32# both vdevs will still have outstanding writes, so a skipped write entry will
33# be recorded in the multihost_history.
34
35
36. $STF_SUITE/include/libtest.shlib
37. $STF_SUITE/tests/functional/mmp/mmp.cfg
38. $STF_SUITE/tests/functional/mmp/mmp.kshlib
39
40verify_runnable "both"
41
42function cleanup
43{
44	log_must zinject -c all
45	mmp_pool_destroy $MMP_POOL $MMP_DIR
46	log_must mmp_clear_hostid
47}
48
49log_assert "zfs_multihost_history records writes and skipped writes"
50log_onexit cleanup
51
52mmp_pool_create_simple $MMP_POOL $MMP_DIR
53log_must zinject -d $MMP_DIR/vdev1 -D$((2*MMP_INTERVAL_DEFAULT)):10 $MMP_POOL
54log_must zinject -d $MMP_DIR/vdev2 -D$((2*MMP_INTERVAL_DEFAULT)):10 $MMP_POOL
55
56mmp_writes=$(count_mmp_writes $MMP_POOL $((MMP_INTERVAL_DEFAULT/1000)))
57mmp_skips=$(count_skipped_mmp_writes $MMP_POOL $((MMP_INTERVAL_DEFAULT/1000)))
58
59if [ $mmp_writes -lt 1 ]; then
60	log_fail "mmp writes entries missing when delays injected"
61fi
62
63if [ $mmp_skips -lt 1 ]; then
64	log_fail "mmp skipped write entries missing when delays injected"
65fi
66
67log_pass "zfs_multihost_history records writes and skipped writes"
68