1#!/bin/ksh -p
2
3#
4# CDDL HEADER START
5#
6# This file and its contents are supplied under the terms of the
7# Common Development and Distribution License ("CDDL"), version 1.0.
8# You may only use this file in accordance with the terms of version
9# 1.0 of the CDDL.
10#
11# A full copy of the text of the CDDL should have accompanied this
12# source.  A copy of the CDDL is also available via the Internet at
13# http://www.illumos.org/license/CDDL.
14#
15# CDDL HEADER END
16#
17
18#
19# Copyright (c) 2019, Datto Inc. All rights reserved.
20# Copyright (c) 2020 by Lawrence Livermore National Security, LLC.
21#
22
23. $STF_SUITE/include/libtest.shlib
24. $STF_SUITE/tests/functional/replacement/replacement.cfg
25
26#
27# DESCRIPTION:
28# Verify scrub behaves as intended when contending with a healing or
29# sequential resilver.
30#
31# STRATEGY:
32# 1. Create a pool
33# 2. Add a modest amount of data to the pool.
34# 3. For healing and sequential resilver:
35#    a. Start scrubbing.
36#    b. Verify a resilver can be started and it cancels the scrub.
37#    c. Verify a scrub cannot be started when resilvering
38#
39
40function cleanup
41{
42	log_must set_tunable32 RESILVER_MIN_TIME_MS $ORIG_RESILVER_MIN_TIME
43	log_must set_tunable32 SCAN_SUSPEND_PROGRESS \
44	    $ORIG_SCAN_SUSPEND_PROGRESS
45	destroy_pool $TESTPOOL1
46	rm -f ${VDEV_FILES[@]} $SPARE_VDEV_FILE
47}
48
49log_assert "Scrub was cancelled by resilver"
50
51ORIG_RESILVER_MIN_TIME=$(get_tunable RESILVER_MIN_TIME_MS)
52ORIG_SCAN_SUSPEND_PROGRESS=$(get_tunable SCAN_SUSPEND_PROGRESS)
53
54log_onexit cleanup
55
56log_must truncate -s $VDEV_FILE_SIZE ${VDEV_FILES[@]} $SPARE_VDEV_FILE
57
58log_must zpool create -f $TESTPOOL1 ${VDEV_FILES[@]}
59log_must zfs create $TESTPOOL1/$TESTFS
60
61mntpnt=$(get_prop mountpoint $TESTPOOL1/$TESTFS)
62log_must dd if=/dev/urandom of=$mntpnt/file bs=1M count=64
63sync_pool $TESTPOOL1
64
65# Request a healing or sequential resilver
66for replace_mode in "healing" "sequential"; do
67
68	#
69	# Healing resilvers abort the dsl_scan and reconfigure it for
70	# resilvering.  Sequential resilvers cancel the dsl_scan and start
71	# the vdev_rebuild thread.
72	#
73	if [[ "$replace_mode" = "healing" ]]; then
74		history_msg="scan aborted, restarting"
75		flags=""
76	else
77		history_msg="scan cancelled"
78		flags="-s"
79	fi
80
81	# Limit scanning time and suspend the scan as soon as possible.
82	log_must set_tunable32 RESILVER_MIN_TIME_MS 50
83	log_must set_tunable32 SCAN_SUSPEND_PROGRESS 1
84
85	# Initiate a scrub.
86	log_must zpool scrub $TESTPOOL1
87
88	# Initiate a resilver to cancel the scrub.
89	log_must zpool replace $flags $TESTPOOL1 ${VDEV_FILES[1]} \
90	    $SPARE_VDEV_FILE
91
92	# Verify the scrub was canceled, it may take a few seconds to exit.
93	while is_pool_scrubbing $TESTPOOL1; do
94		sleep 1
95	done
96	log_mustnot is_pool_scrubbing $TESTPOOL1
97
98	# Verify a scrub cannot be started while resilvering.
99	log_must is_pool_resilvering $TESTPOOL1
100	log_mustnot zpool scrub $TESTPOOL1
101
102	# Unsuspend resilver.
103	log_must set_tunable32 SCAN_SUSPEND_PROGRESS 0
104	log_must set_tunable32 RESILVER_MIN_TIME_MS 3000
105
106	# Wait for resilver to finish then put the original back.
107	log_must zpool wait $TESTPOOL1
108	log_must zpool replace $flags -w $TESTPOOL1 $SPARE_VDEV_FILE \
109	    ${VDEV_FILES[1]}
110done
111log_pass "Scrub was cancelled by resilver"
112
113