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#!/bin/sh
# 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,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Test unaligned size of external origin and thin pool chunk size
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SKIP_WITH_LVMPOLLD = 1
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export LVM_TEST_THIN_REPAIR_CMD = ${ LVM_TEST_THIN_REPAIR_CMD -/bin/false }
. lib/inittest
which cmp || skip
#
# Main
#
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# Test needs thin-pool target with unaligned ext-orig size support
aux have_thin 1 13 0 || skip
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aux prepare_pvs 2 640
# Use 8K extent size
vgcreate $vg -s 8K $( cat DEVICES)
# Prepare some numeric pattern with ~64K size
seq -s ' ' -w 0 10922 > 64K
d1 = " $DM_DEV_DIR / $vg / $lv1 "
d2 = " $DM_DEV_DIR / $vg / $lv2 "
# Prepare external origin LV with size not being a multiple of thin pool chunk size
lvcreate -l47 -n $lv1 $vg
# Fill end with pattern
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dd if = 64K of = " $d1 " bs = 8192 seek = 45 count = 2 conv = fdatasync
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# Switch to read-only volume
lvchange -an $vg /$lv1
lvchange -pr $vg /$lv1
lvcreate -L2M -T $vg /pool -c 192K
lvcreate -s $vg /$lv1 --name $lv2 --thinpool $vg /pool
# Check the tail of $lv2 matches $lv1
dd if = " $d2 " of = 16K bs = 8192 skip = 45 count = 2
cmp -n 16384 -l 64K 16K
# Now extend and rewrite
lvextend -l+2 $vg /$lv2
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dd if = 64K of = " $d2 " bs = 8192 seek = 46 count = 3 conv = fdatasync
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dd if = " $d2 " of = 24K bs = 8192 skip = 46 count = 3 iflag = direct
cmp -n 24576 -l 64K 24K
# Consumes 2 192K chunks -> 66.67%
check lv_field $vg /$lv2 data_percent "66.67"
lvreduce -f -l-24 $vg /$lv2
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dd if = 64K of = " $d2 " bs = 8192 seek = 24 count = 1 conv = fdatasync
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dd if = " $d2 " of = 8K bs = 8192 skip = 24 count = 1 iflag = direct
cmp -n 8192 -l 64K 8K
# Check extension still works
lvextend -l+2 $vg /$lv2
lvremove -f $vg /pool
lvcreate -L256M -T $vg /pool -c 64M
lvcreate -s $vg /$lv1 --name $lv2 --thinpool $vg /pool
lvextend -l+2 $vg /$lv2
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dd if = 64K of = " $d2 " bs = 8192 seek = 45 count = 4 conv = fdatasync
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dd if = " $d2 " of = 32K bs = 8192 skip = 45 count = 4 iflag = direct
cmp -n 32768 -l 64K 32K
lvextend -L+64M $vg /$lv2
# Consumes 64M chunk -> 50%
check lv_field $vg /$lv2 data_percent "50.00"
vgremove -ff $vg