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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 snapshot on cache|writecache
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.ext4 || skip
mount_dir="mnt"
mkdir -p "$mount_dir"
mount_dir_snap="mnt_snap"
mkdir -p "$mount_dir_snap"
# generate random data
dd if=/dev/urandom of=pattern1 bs=512K count=1
aux prepare_devs 2 310
vgcreate $SHARED $vg "$dev1" "$dev2"
# creating a snapshot on top of a cache|writecache
test_snap_create() {
# cache | writecache
local convert_type=$1
# --cachepool | --cachevol
local convert_option=$2
lvcreate -n $lv1 -L 300 -an $vg "$dev1"
lvcreate -n fast -l 4 -an $vg "$dev2"
lvconvert -y --type $convert_type $convert_option fast $vg/$lv1
lvchange -ay $vg/$lv1
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern1 "$mount_dir/pattern1a"
lvcreate -s -L 32 -n snap $vg/$lv1
cp pattern1 "$mount_dir/pattern1b"
mount "$DM_DEV_DIR/$vg/snap" "$mount_dir_snap"
not ls "$mount_dir_snap/pattern1b"
rm "$mount_dir/pattern1a"
diff pattern1 "$mount_dir_snap/pattern1a"
umount "$mount_dir_snap"
lvconvert --splitcache $vg/$lv1
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -an $vg/fast
lvremove $vg/snap
lvremove $vg/$lv1
lvremove $vg/fast
}
test_snap_create cache --cachepool
test_snap_create cache --cachevol
test_snap_create writecache --cachevol
# removing cache|writecache while snapshot exists
test_snap_remove() {
# cache | writecache
local convert_type=$1
# --cachepool | --cachevol
local convert_option=$2
lvcreate -n $lv1 -L 300 -an $vg "$dev1"
lvcreate -n fast -l 4 -an $vg "$dev2"
lvconvert -y --type $convert_type $convert_option fast $vg/$lv1
lvchange -ay $vg/$lv1
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern1 "$mount_dir/pattern1a"
lvcreate -s -L 32 -n snap $vg/$lv1
cp pattern1 "$mount_dir/pattern1b"
lvconvert --splitcache $vg/$lv1
mount "$DM_DEV_DIR/$vg/snap" "$mount_dir_snap"
not ls "$mount_dir_snap/pattern1b"
rm "$mount_dir/pattern1a"
diff pattern1 "$mount_dir_snap/pattern1a"
umount "$mount_dir_snap"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -an $vg/fast
lvremove $vg/snap
lvremove $vg/$lv1
lvremove $vg/fast
}
test_snap_remove cache --cachepool
test_snap_remove cache --cachevol
test_snap_remove writecache --cachevol
# adding cache|writecache to an LV that has a snapshot
test_caching_with_snap() {
# cache | writecache
local convert_type=$1
# --cachepool | --cachevol
local convert_option=$2
lvcreate -n $lv1 -L 300 -an $vg "$dev1"
lvcreate -n fast -l 4 -an $vg "$dev2"
lvchange -ay $vg/$lv1
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
cp pattern1 "$mount_dir/pattern1a"
lvcreate -s -L 32 -n snap $vg/$lv1
lvconvert -y --type $convert_type $convert_option fast $vg/$lv1
cp pattern1 "$mount_dir/pattern1b"
mount "$DM_DEV_DIR/$vg/snap" "$mount_dir_snap"
not ls "$mount_dir_snap/pattern1b"
mv "$mount_dir/pattern1a" "$mount_dir/pattern1c"
diff pattern1 "$mount_dir_snap/pattern1a"
lvconvert --splitcache $vg/$lv1
diff pattern1 "$mount_dir/pattern1c"
diff pattern1 "$mount_dir_snap/pattern1a"
umount "$mount_dir_snap"
umount "$mount_dir"
lvchange -an $vg/$lv1
lvchange -an $vg/fast
lvremove $vg/snap
lvremove $vg/$lv1
lvremove $vg/fast
}
test_caching_with_snap cache --cachepool
test_caching_with_snap cache --cachevol
test_caching_with_snap writecache --cachevol
# adding cache|writecache to a snapshot is not allowed
lvcreate -n $lv1 -L 300 $vg "$dev1"
lvcreate -n fast -l 4 $vg "$dev2"
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
lvcreate -s -L 32 -n snap $vg/$lv1
not lvconvert -y --type writecache --cachevol fast $vg/snap
not lvconvert -y --type cache --cachevol fast $vg/snap
not lvconvert -y --type cache --cachepool fast $vg/snap
vgchange -an $vg
lvremove $vg/snap
lvremove $vg/$lv1
lvremove $vg/fast
vgremove -ff $vg
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