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#!/bin/sh
# Copyright (C) 2013-2014 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Test repairing of broken thin pool metadata
. lib/inittest
test -e LOCAL_LVMPOLLD && skip
which mkfs.ext2 || skip
#
# Main
#
aux have_thin 1 0 0 || skip
aux prepare_vg 4
# Create LV
# TODO: investigate problem with --zero n and my repairable damage trick
#lvcreate -T -L20 -V10 -n $lv1 $vg/pool --discards ignore --zero n --chunksize 128 "$dev1" "$dev2"
lvcreate -T -L20 -V10 -n $lv1 $vg/pool --chunksize 128 --discards ignore "$dev1" "$dev2"
lvcreate -T -V10 -n $lv2 $vg/pool
mkfs.ext2 "$DM_DEV_DIR/$vg/$lv1"
mkfs.ext2 "$DM_DEV_DIR/$vg/$lv2"
lvcreate -L20 -n repair $vg
lvcreate -L2 -n fixed $vg
lvs -a -o+seg_pe_ranges $vg
#aux error_dev "$dev2" 2050:1
lvchange -an $vg/$lv2 $vg/$lv1 $vg/pool $vg/repair
# Manual repair steps:
# Test swapping - swap out thin-pool's metadata with our repair volume
lvconvert -y -f --poolmetadata $vg/repair --thinpool $vg/pool
lvchange -ay $vg/repair
#
# To continue this test - we need real tools available
# When they are not present mark test as skipped, but still
# let proceed initial part which should work even without tools
#
aux have_tool_at_least "$LVM_TEST_THIN_CHECK_CMD" 0 3 1 || skip
aux have_tool_at_least "$LVM_TEST_THIN_DUMP_CMD" 0 3 1 || skip
aux have_tool_at_least "$LVM_TEST_THIN_REPAIR_CMD" 0 3 1 || skip
# Make some 'repairable' damage??
dd if=/dev/zero of="$DM_DEV_DIR/$vg/repair" bs=1 seek=40960 count=1
not "$LVM_TEST_THIN_CHECK_CMD" "$DM_DEV_DIR/$vg/repair"
not "$LVM_TEST_THIN_DUMP_CMD" "$DM_DEV_DIR/$vg/repair" | tee dump
"$LVM_TEST_THIN_REPAIR_CMD" -i "$DM_DEV_DIR/$vg/repair" -o "$DM_DEV_DIR/$vg/fixed"
"$LVM_TEST_THIN_DUMP_CMD" --repair "$DM_DEV_DIR/$vg/repair" | tee repaired_xml
"$LVM_TEST_THIN_CHECK_CMD" "$DM_DEV_DIR/$vg/fixed"
lvchange -an $vg
# Swap repaired metadata back
lvconvert -y -f --poolmetadata $vg/fixed --thinpool $vg/pool
# Check pool still preserves its original settings
check lv_field $vg/pool chunksize "128.00k"
check lv_field $vg/pool discards "ignore"
check lv_field $vg/pool zero "zero"
# Activate pool - this should now work
vgchange -ay $vg
vgchange -an $vg
# Put back 'broken' metadata
lvconvert -y -f --poolmetadata $vg/repair --thinpool $vg/pool
# Check --repair usage
lvconvert -v --repair $vg/pool
# Check repaired pool could be activated
lvchange -ay $vg/pool
vgchange -an $vg
# Restore damaged metadata
lvconvert -y -f --poolmetadata $vg/pool_meta0 --thinpool $vg/pool
# Check lvremove -ff works even with damaged pool
lvremove -ff $vg
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