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#!/usr/bin/env bash
# Copyright (C) 2015 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
# ensure there is no data loss during thin-pool resize
SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1
export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
. lib/inittest
which md5sum || skip
aux have_thin 1 0 0 || skip
aux prepare_vg 2 20
lvcreate -L1M -V2M -n $lv1 -T $vg/pool
# just ensure we check what we need to check
check lv_field $vg/pool size "1.00m"
check lv_field $vg/$lv1 size "2.00m"
# prepare 2097152 file content
seq 0 315465 > 2M
md5sum 2M | cut -f 1 -d ' ' | tee MD5
dd if=2M of="$DM_DEV_DIR/mapper/$vg-$lv1" bs=512K conv=fdatasync >log 2>&1 &
#dd if=2M of="$DM_DEV_DIR/mapper/$vg-$lv1" bs=2M oflag=direct &
# give it some time to fill thin-volume
# eventually loop to wait for 100% full pool...
sleep .1
lvs -a $vg
# this must not 'block & wait' on suspending flush
# if it waits on thin-pool's target timeout
# it will harm queued data
lvextend -L+512k $vg/pool
lvextend -L+512k $vg/pool
# collect 'dd' result
wait
cat log
lvs -a $vg
dd if="$DM_DEV_DIR/mapper/$vg-$lv1" of=2M-2 iflag=direct
md5sum 2M-2 | cut -f 1 -d ' ' | tee MD5-2
# these 2 are supposed to match
diff MD5 MD5-2
# Do not want to see Live & Inactive table entry
echo $(dm_info attr,name) | not grep "LI-.*${PREFIX}" || {
dmsetup table --inactive | grep ${PREFIX}
die "Found device with Inactive table"
}
# Check wrapping active thin-pool linear mapping has matching size
POOLSZ=$(dmsetup table ${vg}-pool-tpool | cut -d ' ' -f 2)
WRAPSZ=$(dmsetup table ${vg}-pool | cut -d ' ' -f 2)
#
# FIXME: currently requires to update 2 dependent targets in one 'preload'
# lvm2 cannot handle this and would need one extra --refresh pass.
# Once resolved - enabled this test.
# Maybe other solution without fake linear mapping could be found.
# Eventually strictly map just single sector as it has no real use?
#
#should test "${POOLSZ}" = "${WRAPSZ}" || \
# die "Wrapping pool device size does not match real pool size"
vgremove -f $vg
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