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#!/bin/sh
# Copyright (C) 2014-2016 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 autoextension of thin metadata volume
SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1
export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
. lib/inittest
meta_percent_() {
get lv_field $vg/pool metadata_percent | cut -d. -f1
}
wait_for_change_() {
# dmeventd only checks every 10 seconds :(
for i in $(seq 1 12) ; do
test "$(meta_percent_)" -lt "$1" && return
sleep 1
done
return 1 # timeout
}
#
# Temporary solution to create some occupied thin metadata
# This heavily depends on thin metadata output format to stay as is.
# Currently it expects 2MB thin metadata and 200MB data volume size
# Argument specifies how many devices should be created.
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>'
echo ' <device dev_id="2" 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
}
test -n "$LVM_TEST_THIN_RESTORE_CMD" || LVM_TEST_THIN_RESTORE_CMD=$(which thin_restore) || skip
"$LVM_TEST_THIN_RESTORE_CMD" -V || skip
aux have_thin 1 10 0 || skip
aux prepare_dmeventd
aux prepare_pvs 3 256
vgcreate -s 1M $vg $(cat DEVICES)
# Testing dmeventd does NOT autoresize when default threshold 100% is left
lvcreate -L200M -V50M -n thin -T $vg/pool
lvcreate -V2M -n thin2 $vg/pool
lvcreate -L2M -n $lv1 $vg
lvcreate -L32M -n $lv2 $vg
lvcreate -L32M -n $lv3 $vg
lvchange -an $vg/thin $vg/thin2 $vg/pool
# Filling 2M metadata volume
# (Test for less then 25% free space in metadata)
fake_metadata_ 400 2 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
# Swap volume with restored fake metadata
lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
# Not alllowed when thin-pool metadata free space is <75% for 2M meta
fail lvcreate -V20 $vg/pool
lvchange -an $vg/pool
# Consume more then (100% - 4MiB) out of 32MiB metadata volume (>87.5%)
# (Test for less then 4MiB free space in metadata, which is less then 25%)
fake_metadata_ 7400 2 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv2"
# Swap volume with restored fake metadata
lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv2
lvchange -ay $vg/pool
# Check generated metadata consume more then 88%
test "$(meta_percent_)" -gt "88"
lvchange -an $vg/pool
# Creation of thin LV is prohibited when metadata are above this value
fail lvcreate -V20 $vg/pool 2>&1 | tee out
grep "free space" out
lvs -a $vg
# Check that even with 99% threshold policy - metadata will go below 88%
lvextend --use-policies --config "\
activation/thin_pool_autoextend_percent=1 \
activation/thin_pool_autoextend_threshold=99" $vg/pool
test "$(meta_percent_)" -lt "88"
# After such operatoin creation of thin LV has to pass
lvcreate -V20 $vg/pool
# Let's revalidate pool metadata (thin_check upon deactivation/activation)
lvchange -an $vg
lvchange -ay $vg/pool
lvremove -f $vg
#########################################################
# Test automatic resize with help of dmeventd DOES work #
#########################################################
aux lvmconf "activation/thin_pool_autoextend_percent = 10" \
"activation/thin_pool_autoextend_threshold = 70"
# Testing dmeventd autoresize
lvcreate -L200M -V500M -n thin -T $vg/pool 2>&1 | tee out
not grep "WARNING: Sum" out
lvcreate -V2M -n thin2 $vg/pool
lvcreate -L2M -n $lv1 $vg
lvchange -an $vg/thin $vg/thin2 $vg/pool
# Prepare some fake metadata with unmatching id
# Transaction_id is lower by 1 and there are no messages -> ERROR
fake_metadata_ 10 0 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
lvconvert -y --thinpool $vg/pool --poolmetadata $vg/$lv1
not vgchange -ay $vg 2>&1 | tee out
grep expected out
check inactive $vg pool_tmeta
# Transaction_id is higher by 1
fake_metadata_ 10 3 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
lvconvert -y --thinpool $vg/pool --poolmetadata $vg/$lv1
not vgchange -ay $vg 2>&1 | tee out
grep expected out
check inactive $vg pool_tmeta
# Prepare some fake metadata prefilled to ~81% (>70%)
fake_metadata_ 400 2 >data
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
# Swap volume with restored fake metadata
lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
vgchange -ay $vg
# Check dmeventd resizes metadata via timeout (nothing is written to pool)
pre=$(meta_percent_)
wait_for_change_ $pre
lvchange -an $vg
#
fake_metadata_ 350 2 >data
lvchange -ay $vg/$lv1
"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
lvchange -ay $vg/pool $vg/$lv1
lvs -a $vg
lvcreate -s -Ky -n $lv2 $vg/thin
pre=$(meta_percent_)
# go over thin metadata threshold
echo 2 >"$DM_DEV_DIR/mapper/$vg-$lv2"
wait_for_change_ $pre
lvs -a $vg
vgremove -f $vg
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