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lvm2/test/shell/vgreduce-removemissing-snapshot.sh
Jonathan Earl Brassow 8322deefee Disallow snapshots of mirror segment types.
Snapshots of RAID logical volumes are allowed (including "raid1").  However,
snapshots of "mirror" logical volumes has been disallowed due to unsolvable
issues inherent to the design.  The fact that mirroring (dm-raid1.c) must
stop all I/O as the result of a failure and wait for userspace intervention
can lead to a circular dependency if userspace is simultaneously waiting for
snapshots (on mirrors) to make an I/O update before proceeding.

Various snapshot on mirror tests have been removed as a result.
2012-05-01 19:21:24 +00:00

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#!/bin/sh
# Copyright (C) 2011 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
. lib/test
exit 0
#
# Snapshots of 'mirrors' are not supported. They can no longer be created.
# This file could be used to test some aspect of vgreduce, snapshot, and
# RAID at some point though...
#
aux prepare_vg 5
lvcreate -m 3 --ig -L 2M -n 4way $vg "$dev1" "$dev2" "$dev3" "$dev4" "$dev5":0
lvcreate -s $vg/4way -L 2M -n snap
lvcreate -i 2 -L 2M $vg "$dev1" "$dev2" -n stripe
aux disable_dev "$dev2" "$dev4"
echo n | lvconvert --repair $vg/4way
aux enable_dev "$dev2" "$dev4"
#not vgreduce --removemissing $vg
vgreduce -v --removemissing --force $vg # "$dev2" "$dev4"
lvs -a -o +devices $vg | not grep unknown
lvs -a -o +devices $vg
check mirror $vg 4way "$dev5"