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#!/usr/bin/env bash
# Copyright (C) 2018 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 single lv cache
SKIP_WITH_LVMPOLLD=1
. lib/inittest
lvm segtypes 2>/dev/null | grep writecache$ >/dev/null || {
skip 'Writecache is not built-in.'
}
aux have_cache 1 10 0 || skip
which mkfs.xfs || skip
mount_dir="mnt"
mkdir -p "$mount_dir"
# generate random data
dd if=/dev/urandom of=pattern1 bs=512K count=1
aux prepare_devs 2 310
vgcreate $SHARED $vg "$dev1"
vgextend $vg "$dev2"
lvcreate -n $lv1 -L 300 -an $vg "$dev1"
lvcreate -n $lv2 -l 4 -an $vg "$dev2"
# test1: create fs on LV before cache is attached
lvchange -ay $vg/$lv1
mkfs.xfs -f -s size=4096 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern1 "$mount_dir/pattern1"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvconvert -y --type cache --cachevol $lv2 $vg/$lv1
check lv_field $vg/$lv1 segtype cache
lvs -a $vg/${lv2}_cvol --noheadings -o segtype >out
grep linear out
lvchange -ay $vg/$lv1
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
diff pattern1 "$mount_dir/pattern1"
cp pattern1 "$mount_dir/pattern1b"
ls -l "$mount_dir"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvconvert --splitcache $vg/$lv1
check lv_field $vg/$lv1 segtype linear
check lv_field $vg/$lv2 segtype linear
lvchange -ay $vg/$lv1
lvchange -ay $vg/$lv2
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
ls -l "$mount_dir"
diff pattern1 "$mount_dir/pattern1"
diff pattern1 "$mount_dir/pattern1b"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -an $vg/$lv2
# test2: create fs on LV after cache is attached
lvconvert -y --type cache --cachevol $lv2 $vg/$lv1
check lv_field $vg/$lv1 segtype cache
lvs -a $vg/${lv2}_cvol --noheadings -o segtype >out
grep linear out
lvchange -ay $vg/$lv1
mkfs.xfs -f -s size=4096 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern1 "$mount_dir/pattern1"
ls -l "$mount_dir"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvconvert --splitcache $vg/$lv1
check lv_field $vg/$lv1 segtype linear
check lv_field $vg/$lv2 segtype linear
lvchange -ay $vg/$lv1
lvchange -ay $vg/$lv2
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
ls -l "$mount_dir"
diff pattern1 "$mount_dir/pattern1"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -an $vg/$lv2
# misc tests
lvremove $vg
lvcreate -n $lv1 -l 2 -an $vg "$dev1"
lvcreate -n $lv2 -l 2 -an $vg "$dev1"
lvcreate -n $lv3 -l 2 -an $vg "$dev2"
lvconvert -y --type writecache --cachevol $lv3 $vg/$lv1
not lvconvert -y --type writecache --cachevol ${lv3}_cvol $vg/$lv2
not lvconvert -y --type cache --cachevol ${lv3}_cvol $vg/$lv2
not lvconvert -y --type cache --cachepool ${lv3}_cvol $vg/$lv2
vgremove -ff $vg
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