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#!/usr/bin/env bash
# Copyright (C) 2017-2020 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
SKIP_WITH_LVMPOLLD=1
# lvextend LV with cache|writecache
. lib/inittest
case "$(uname -r)" in
6.2*) skip "Skippen test that kills this kernel" ;;
esac
do_test()
{
# create some initial data
lvchange -ay $vg/$lv1
mkfs.xfs -f -s size=4096 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern "$mount_dir/pattern1"
dd if=/dev/urandom of="$mount_dir/rand100M" bs=1M count=100 conv=fdatasync
cp pattern "$mount_dir/pattern2"
# extend while mounted
lvextend -L+64M $vg/$lv1 "$dev4"
lvs -a $vg -o+devices
# verify initial data
diff pattern "$mount_dir/pattern1"
diff pattern "$mount_dir/pattern2"
dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
# add more data
cp pattern "$mount_dir/pattern3"
dd if=/dev/urandom of="$mount_dir/rand8M" bs=1M count=8 conv=fdatasync
# restart the LV
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -ay $vg/$lv1
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
# verify all data
diff pattern "$mount_dir/pattern1"
diff pattern "$mount_dir/pattern2"
diff pattern "$mount_dir/pattern3"
dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
# extend again while inactive
umount "$mount_dir"
lvchange -an $vg/$lv1
lvextend -L+64M $vg/$lv1 "$dev5"
lvs -a $vg -o+devices
lvchange -ay $vg/$lv1
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
# verify all data
diff pattern "$mount_dir/pattern1"
diff pattern "$mount_dir/pattern2"
diff pattern "$mount_dir/pattern3"
dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
# add more data
cp pattern "$mount_dir/pattern4"
# remove the cache
lvconvert --splitcache $vg/$lv1
# verify all data
diff pattern "$mount_dir/pattern1"
diff pattern "$mount_dir/pattern2"
diff pattern "$mount_dir/pattern3"
diff pattern "$mount_dir/pattern4"
dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -ay $vg/$lv1
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
# verify all data
diff pattern "$mount_dir/pattern1"
diff pattern "$mount_dir/pattern2"
diff pattern "$mount_dir/pattern3"
diff pattern "$mount_dir/pattern4"
dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
umount "$mount_dir"
lvchange -an $vg/$lv1
lvremove $vg/$lv1
lvremove -y $vg
}
aux have_cache 1 10 0 || skip
aux have_writecache 1 0 0 || skip
which mkfs.xfs || skip
mount_dir="mnt"
mkdir -p "$mount_dir"
aux prepare_devs 6 200 # want 200M of usable space from each dev
# generate random data
dd if=/dev/urandom of=pattern bs=512K count=1
vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3" "$dev4" "$dev5" "$dev6"
# test type cache|writecache
# cache with cachepool|cachevol
# cache with writeback|writethrough
# lv1 is main LV: 300M
# lv2 is fast LV: 64M
lvcreate -n $lv1 -L300M -an $vg "$dev1" "$dev2"
lvcreate -n $lv2 -L64M -an $vg "$dev3"
lvconvert -y --type writecache --cachevol $lv2 $vg/$lv1
lvs -a $vg -o+devices
do_test
lvcreate -n $lv1 -L300M -an $vg "$dev1" "$dev2"
lvcreate -n $lv2 -L64M -an $vg "$dev3"
lvconvert -y --type cache --cachevol $lv2 --cachemode writeback $vg/$lv1
lvs -a $vg -o+devices
do_test
lvcreate -n $lv1 -L300M -an $vg "$dev1" "$dev2"
lvcreate -n $lv2 -L64M -an $vg "$dev3"
lvconvert -y --type cache --cachevol $lv2 --cachemode writethrough $vg/$lv1
lvs -a $vg -o+devices
do_test
lvcreate -n $lv1 -L300M -an $vg "$dev1" "$dev2"
lvcreate -y --type cache-pool -n $lv2 -L64M --poolmetadataspare n $vg "$dev3" "$dev6"
lvconvert -y --type cache --cachepool $lv2 --poolmetadataspare n $vg/$lv1
lvs -a $vg -o+devices
do_test
vgremove -f $vg
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