[mirror_zfs.git] / tests / zfs-tests / tests / functional / cli_root / zdb / zdb_004_pos.ksh

#!/bin/ksh

#
# 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.
#

#
# Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
#

. $STF_SUITE/include/libtest.shlib

#
# Description:
# zdb will not produce redundant dumps of uberblocks
#
# Strategy:
# 1. Create a pool with two vdevs, A and B
# 2. Offline vdev A
# 3. Do some I/O
# 4. Export the pool
# 5. Copy label 1 from vdev A to vdev B
# 6. Collect zdb -lu output for vdev B
# 7. Verify labels 0 and 1 have unique Uberblocks, but 2 and 3 have none
#

log_assert "Verify zdb produces unique dumps of uberblocks"
log_onexit cleanup

function cleanup
{
	datasetexists $TESTPOOL && destroy_pool $TESTPOOL
	for DISK in $DISKS; do
		zpool labelclear -f $DEV_RDSKDIR/$DISK
	done
	if is_freebsd ; then
		log_must sysctl kern.geom.debugflags=$saved_debugflags
	fi
}

if is_freebsd ; then
	# FreeBSD won't allow writing to an in-use device without this set
	saved_debugflags=$(sysctl -n kern.geom.debugflags)
	log_must sysctl kern.geom.debugflags=16
fi

verify_runnable "global"
verify_disk_count "$DISKS" 2
set -A DISK $DISKS
if is_freebsd ; then
	WHOLE_DISK=/dev/${DISK[0]}
else
	WHOLE_DISK=${DISK[0]}
fi

default_mirror_setup_noexit $DISKS
DEVS=$(get_pool_devices ${TESTPOOL} ${DEV_RDSKDIR})
[[ -n $DEVS ]] && set -A DISK $DEVS

log_must zpool offline $TESTPOOL ${WHOLE_DISK}
log_must dd if=/dev/urandom of=$TESTDIR/testfile bs=1K count=2
log_must zpool export $TESTPOOL

log_must dd if=$DEV_RDSKDIR/${DISK[0]} of=$DEV_RDSKDIR/${DISK[1]} bs=1K count=256 conv=notrunc

if is_freebsd; then
	DISK1="/dev/${DISK[1]}"
else
	DISK1="${DISK[1]}"
fi

ubs=$(zdb -lu ${DISK1} | grep -e LABEL -e Uberblock -e 'labels = ')
log_note "vdev 1: ubs $ubs"

ub_dump_counts=$(zdb -lu ${DISK1} | \
	awk '	/LABEL/	{label=$NF; blocks[label]=0};
		/Uberblock/ {blocks[label]++};
		END {print blocks[0],blocks[1],blocks[2],blocks[3]}')
(( $? != 0)) && log_fail "failed to get ub_dump_counts from DISK[1]"
log_note "vdev 1: ub_dump_counts $ub_dump_counts"

set -A dump_count $ub_dump_counts
for label in 0 1 2 3; do
	if [[ $label -lt 2 ]]; then
 		[[ ${dump_count[$label]} -eq 0 ]] && \
		    log_fail "zdb incorrectly dumps duplicate uberblocks"
	else
 		[[ ${dump_count[$label]} -ne 0 ]] && \
		    log_fail "zdb incorrectly dumps duplicate uberblocks"
	fi
done

cleanup

log_pass "zdb produces unique dumps of uberblocks"
Commit	Line	Data
3c9e0d67 OF	1	#!/bin/ksh
	2
	3	#
	4	# This file and its contents are supplied under the terms of the
	5	# Common Development and Distribution License ("CDDL"), version 1.0.
	6	# You may only use this file in accordance with the terms of version
	7	# 1.0 of the CDDL.
	8	#
	9	# A full copy of the text of the CDDL should have accompanied this
	10	# source. A copy of the CDDL is also available via the Internet at
	11	# http://www.illumos.org/license/CDDL.
	12	#
	13
	14	#
	15	# Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
	16	#
	17
	18	. $STF_SUITE/include/libtest.shlib
	19
	20	#
	21	# Description:
	22	# zdb will not produce redundant dumps of uberblocks
	23	#
	24	# Strategy:
	25	# 1. Create a pool with two vdevs, A and B
	26	# 2. Offline vdev A
	27	# 3. Do some I/O
	28	# 4. Export the pool
	29	# 5. Copy label 1 from vdev A to vdev B
	30	# 6. Collect zdb -lu output for vdev B
	31	# 7. Verify labels 0 and 1 have unique Uberblocks, but 2 and 3 have none
	32	#
	33
	34	log_assert "Verify zdb produces unique dumps of uberblocks"
	35	log_onexit cleanup
	36
	37	function cleanup
	38	{
	39	datasetexists $TESTPOOL && destroy_pool $TESTPOOL
	40	for DISK in $DISKS; do
c1d9abf9	41	zpool labelclear -f $DEV_RDSKDIR/$DISK
3c9e0d67	42	done
7839c4b5 MM	43	if is_freebsd ; then
	44	log_must sysctl kern.geom.debugflags=$saved_debugflags
	45	fi
3c9e0d67 OF	46	}
3c9e0d67 OF	47
7839c4b5 MM	48	if is_freebsd ; then
	49	# FreeBSD won't allow writing to an in-use device without this set
	50	saved_debugflags=$(sysctl -n kern.geom.debugflags)
	51	log_must sysctl kern.geom.debugflags=16
	52	fi
	53
3c9e0d67 OF	54	verify_runnable "global"
	55	verify_disk_count "$DISKS" 2
	56	set -A DISK $DISKS
7839c4b5 MM	57	if is_freebsd ; then
	58	WHOLE_DISK=/dev/${DISK[0]}
	59	else
	60	WHOLE_DISK=${DISK[0]}
	61	fi
3c9e0d67 OF	62
3c9e0d67 OF	63	default_mirror_setup_noexit $DISKS
8e5d1484 PZ	64	DEVS=$(get_pool_devices ${TESTPOOL} ${DEV_RDSKDIR})
	65	[[ -n $DEVS ]] && set -A DISK $DEVS
	66
	67	log_must zpool offline $TESTPOOL ${WHOLE_DISK}
c1d9abf9 JWK	68	log_must dd if=/dev/urandom of=$TESTDIR/testfile bs=1K count=2
c1d9abf9 JWK	69	log_must zpool export $TESTPOOL
8e5d1484	70
c1d9abf9	71	log_must dd if=$DEV_RDSKDIR/${DISK[0]} of=$DEV_RDSKDIR/${DISK[1]} bs=1K count=256 conv=notrunc
3c9e0d67	72
7839c4b5 MM	73	if is_freebsd; then
	74	DISK1="/dev/${DISK[1]}"
	75	else
	76	DISK1="${DISK[1]}"
	77	fi
	78
	79	ubs=$(zdb -lu ${DISK1} \| grep -e LABEL -e Uberblock -e 'labels = ')
3c9e0d67 OF	80	log_note "vdev 1: ubs $ubs"
3c9e0d67 OF	81
7839c4b5	82	ub_dump_counts=$(zdb -lu ${DISK1} \| \
c1d9abf9	83	awk ' /LABEL/ {label=$NF; blocks[label]=0};
3c9e0d67 OF	84	/Uberblock/ {blocks[label]++};
	85	END {print blocks[0],blocks[1],blocks[2],blocks[3]}')
	86	(( $? != 0)) && log_fail "failed to get ub_dump_counts from DISK[1]"
	87	log_note "vdev 1: ub_dump_counts $ub_dump_counts"
	88
	89	set -A dump_count $ub_dump_counts
	90	for label in 0 1 2 3; do
	91	if [[ $label -lt 2 ]]; then
	92	[[ ${dump_count[$label]} -eq 0 ]] && \
	93	log_fail "zdb incorrectly dumps duplicate uberblocks"
	94	else
	95	[[ ${dump_count[$label]} -ne 0 ]] && \
	96	log_fail "zdb incorrectly dumps duplicate uberblocks"
	97	fi
	98	done
	99
	100	cleanup
	101
	102	log_pass "zdb produces unique dumps of uberblocks"