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lvm2/test/shell/writecache.sh
David Teigland 4829f27b76 writecache: drop real dm suffix
fixes the problem of adding writecache to an active LV
2020-02-17 13:07:06 -06:00

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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 writecache usage
SKIP_WITH_LVMPOLLD=1
. lib/inittest
aux have_writecache 1 0 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 64
vgcreate $SHARED $vg "$dev1"
vgextend $vg "$dev2"
lvcreate -n $lv1 -l 8 -an $vg "$dev1"
lvcreate -n $lv2 -l 4 -an $vg "$dev2"
# test1: create fs on LV before writecache 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 --yes --type writecache --cachevol $lv2 $vg/$lv1
check lv_field $vg/$lv1 segtype writecache
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 writecache is attached
lvconvert --yes --type writecache --cachevol $lv2 $vg/$lv1
check lv_field $vg/$lv1 segtype writecache
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
# test3: attach writecache to an active LV
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
lvconvert --yes --type writecache --cachevol $lv2 $vg/$lv1
check lv_field $vg/$lv1 segtype writecache
lvs -a $vg/${lv2}_cvol --noheadings -o segtype >out
grep linear out
cp pattern1 $mount_dir/pattern1.after
diff pattern1 $mount_dir/pattern1
diff pattern1 $mount_dir/pattern1.after
umount $mount_dir
lvchange -an $vg/$lv1
lvchange -ay $vg/$lv1
mount "$DM_DEV_DIR/$vg/$lv1" $mount_dir
diff pattern1 $mount_dir/pattern1
diff pattern1 $mount_dir/pattern1.after
umount $mount_dir
lvchange -an $vg/$lv1
lvremove $vg/$lv1
vgremove -ff $vg