source: vbox/trunk/src/VBox/Storage/testcase/tstVDShareable.vd@ 35789

# $Id: tstVDShareable.vd 35789 2011-01-31 15:25:22Z vboxsync $
#
# Storage: Testcase for shareable disks.
#

#
# Copyright (C) 2011 Oracle Corporation
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License (GPL) as published by the Free Software
# Foundation, in version 2 as it comes in the "COPYING" file of the
# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
#

# Init I/O RNG for generating random data for writes
iorngcreate size=10M seed=1234567890

# Create disk containers.
createdisk name=shared1
createdisk name=shared2

# Create the disk and close it.
create disk=shared1 mode=base name=tstShared.vdi type=fixed backend=VDI size=20M
close disk=shared1 mode=all delete=no

# Open the disk with sharing enabled.
open disk=shared1 name=tstShared.vdi backend=VDI shareable=yes
open disk=shared2 name=tstShared.vdi backend=VDI shareable=yes

# Write to one disk and verify that the other disk can see the content.
io disk=shared1 async=yes max-reqs=32 mode=seq blocksize=64k off=0-20M size=20M writes=100
comparedisks disk1=shared1 disk2=shared2

# Write to the second disk and verify that the first can see the content.
io disk=shared2 async=yes max-reqs=64 mode=seq blocksize=8k off=0-20M size=20M writes=50
comparedisks disk1=shared1 disk2=shared2

# Close but don't delete yet.
close disk=shared1 mode=all delete=no
close disk=shared2 mode=all delete=no

# Open and delete
open disk=shared1 name=tstShared.vdi backend=VDI shareable=no
close disk=shared1 mode=single delete=yes

# Cleanup
destroydisk name=shared1
destroydisk name=shared2
iorngdestroy