lvm2/test/shell/thin-flags.sh

#!/bin/bash
# Copyright (C) 2016 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

# test presence of various thin-pool/thin flags

SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1

export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}


# TODO - aux/get support for this....
fake_metadata_() {
	echo '<superblock uuid="" time="0" transaction="'$2'" data_block_size="128" nr_data_blocks="3200">'
	echo ' <device dev_id="1" mapped_blocks="0" transaction="0" creation_time="0" snap_time="0">'
	echo ' </device>'
	for i in $(seq 10 $1)
	do
		echo ' <device dev_id="'$i'" mapped_blocks="30" transaction="0" creation_time="0" snap_time="0">'
		echo '  <range_mapping origin_begin="0" data_begin="0" length="29" time="0"/>'
		echo ' </device>'
		set +x
	done
	echo "</superblock>"
	set -x
}


. lib/inittest

#
# Main
#
aux have_thin 1 3 0 || skip
aux thin_pool_error_works_32 || skip

aux prepare_vg 2 256

###############################################
#  Testing failing thin-pool metadata device  #
###############################################

lvcreate -T -L1M --errorwhenfull y $vg/pool
lvcreate -V2 -n $lv2 $vg/pool

aux error_dev  "$dev2" 2054:2
# Check our 'lvs' is not flushing pool - should be still OK
check lv_attr_bit health $vg/pool "-"
# Enforce flush on thin pool device to notice error device.
dmsetup status $vg-pool-tpool
check lv_attr_bit health $vg/pool "F"
check lv_attr_bit health $vg/$lv2 "F"
aux enable_dev "$dev2"

lvchange -an $vg

# Overfill data area
lvchange -ay $vg
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=1M count=2
check lv_attr_bit health $vg/pool "D"
# TODO use spaces ??
check lv_field $vg/pool lv_health_status "out_of_data"

lvremove -ff $vg


#######################################################
#  Testing what happens on system without thin-check  #
#######################################################

lvcreate -L200M --errorwhenfull y -T $vg/pool
lvcreate -V2 -n $lv2 $vg/pool
lvchange -an $vg

# Drop usage of  thin_check
aux lvmconf 'global/thin_check_executable = ""'

# Prepare some fake metadata prefilled to ~100%
lvcreate -L2 -n $lv1 $vg # tmp for metadata
fake_metadata_ 500 1 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"

# Swap volume with restored fake metadata
lvconvert -y --thinpool $vg/pool --poolmetadata $vg/$lv1

lvchange -ay $vg

lvchange -ay $vg/$lv2
# Provisiong and last free bits in metadata
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=32K count=1

check lv_attr_bit health $vg/pool "M"
# TODO - use spaces ??
check lv_field $vg/pool lv_health_status "metadata_read_only"
check lv_attr_bit health $vg/$lv2 "-"

# needs_check needs newer version
if aux have_thin 1 16 0 ; then
	check lv_attr_bit state $vg/pool "c"
	check lv_field $vg/pool lv_check_needed "check needed"

	dmsetup suspend $vg-pool-tpool

	# suspended  thin-pool with Capital 'c'
	check lv_attr_bit state $vg/pool "C"

	dmsetup resume $vg-pool-tpool

	lvresize -L+2M $vg/pool_tmeta

	# still require thin_check
	check lv_attr_bit state $vg/pool "c"
fi

vgremove -ff $vg