lvm2/test/shell/lvconvert-raid10.sh

#!/usr/bin/env bash

# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA


SKIP_WITH_LVMPOLLD=1

. lib/inittest

get_image_pvs() {
	local d
	local images

	images=$(dmsetup ls | grep "${1}-${2}_.image_.*" | cut -f1 | sed -e s:-:/:)
	lvs --noheadings -a -o devices $images | sed s/\(.\)//
}

########################################################
# MAIN
########################################################
# RAID10: Can replace 'copies - 1' devices from each stripe
# Tests are run on 2-way mirror, 3-way stripe RAID10
aux have_raid 1 3 1 || skip

# 9 PVs needed for RAID10 testing (3-stripes/2-mirror - replacing 3 devs)
aux prepare_vg 9 80

lvcreate --type raid10 -m 1 -i 3 -l 3 -n $lv1 $vg
aux wait_for_sync $vg $lv1

# Can replace any single device
for i in $(get_image_pvs $vg $lv1); do
	lvconvert --replace $i $vg/$lv1
	aux wait_for_sync $vg $lv1
done

# Can't replace adjacent devices
devices=( $(get_image_pvs $vg $lv1) )
not lvconvert --replace "${devices[0]}" --replace "${devices[1]}" $vg/$lv1
not lvconvert --replace "${devices[2]}" --replace "${devices[3]}" $vg/$lv1
not lvconvert --replace "${devices[4]}" --replace "${devices[5]}" $vg/$lv1

# Can replace non-adjacent devices
for i in 0 1; do
	lvconvert \
		--replace "${devices[$i]}" \
		--replace "${devices[$(( i + 2 ))]}" \
		--replace "${devices[$(( i + 4 ))]}" \
		 $vg/$lv1
	aux wait_for_sync $vg $lv1
done

vgremove -ff $vg