How to set permissions on devicemapper block device

I'm setting up a new RAC on RHEL5.1 using device mapper for multipath functionality.
How should I set the permissions for the block devices I'm going to use for ocr, voting and asm?
/dev/mapper/ocr1
/dev/mapper/voting1
etc.
Regards
Jon-Arne Storelv

Markus,
You are right about udev changing drastically between RHEL 4 and RHEL 5. The paper I referred to does include some guidelines for setting permissions for RHEL 5 as well. Here are some relevant extracts from the same pdf document:-
# From udev.permissions section
This file was obsoleted in later versions of the 2.6 kernels such as SLES10, RHEL5 and
Oracle Enterprise Linux 5 (OEL5), that functionality was merged into the rules files, which is explained later in this paper
...and later you will find this example in the document
For RHEL5, OEL5, SLES10
• Create a file /etc/udev/rules.d/99-raw.rules with the following content
with the following content
KERNEL=="raw[1-2]*", GROUP="oinstall", MODE="640"
KERNEL=="raw[3-5]*", OWNER="oracle", GROUP="oinstall", MODE="660"
/etc/udev/rules.d/50-udev.rules on Centos 5 gives plenty of examples of settings for all different types of devices. We really need to specify OWNER, GROUP and MODE for devices that RAC will use in a rules file.
Thanks,
Satish

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Copyright (c) 1982, 2005, Oracle. All rights reserved.
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