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lvm2/test/shell/lvconvert-cache-snapshot.sh
David Teigland fa2a728a39 lvconvert: snapshot: use command definitions
Lift all the snapshot utilities (merge, split, combine)
out of the monolithic lvconvert implementation, using
the command definitions.  The old code associated with
these commands is now unused and will be removed separately.
2017-02-13 08:20:10 -06:00

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#!/bin/sh
# Copyright (C) 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 various supported conversion of snapshot of cached volume
SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1
. lib/inittest
aux have_cache 1 3 0 || skip
aux prepare_vg 1
# Prepare cached LV
lvcreate -aey -L1 -n $lv1 $vg
lvcreate -H -L2 -n cpool $vg/$lv1
# Prepare snapshot 'cow' LV
lvcreate -L3 -n cow $vg
# Can't use 'cached' cow volume
not lvconvert -s cow $vg/$lv1
# Use cached LV with 'striped' cow volume
lvconvert -y -s $vg/$lv1 $vg/cow
check lv_field $vg/cow segtype linear
check lv_field $vg/$lv1 segtype cache
# Drop cache while being in-use origin
lvconvert --splitcache $vg/$lv1
check lv_field $vg/$lv1 segtype linear
# Cache existing origin
lvconvert -y --cache $vg/$lv1 --cachepool $vg/cpool
check lv_field $vg/$lv1 segtype cache
# Cannot split from 'origin' (being cached LV)
not lvconvert -y --splitsnapshot $vg/$lv1
lvchange --cachemode writeback $vg/$lv1
check lv_field $vg/$lv1 cache_mode "writeback"
check grep_dmsetup status ${vg}-${lv1}-real "writeback"
lvchange --cachemode writethrough $vg/$lv1
check lv_field $vg/$lv1 cache_mode "writethrough"
check grep_dmsetup status ${vg}-${lv1}-real "writethrough"
# Split 'cow' from cached origin
lvconvert -y --splitsnapshot $vg/cow
get lv_field $vg/cow attr | grep "^-wi"
vgremove -f $vg