[Linux-cluster] persistent binding/naming with Linux

Riaan van Niekerk riaan at obsidian.co.za
Tue Jul 4 15:10:52 UTC 2006

sun sadm wrote:
> Hello colleague
> We use RHEL4 update 3, RHCS and SAN device.
> There are different possibilities for persistent naming/binding.
> What are the advantages and disadvantages of the different solutions? 
> Which is
> recommended? I would be very gladly for short configuration excerpts.
> 1) RDAC driver /var/mpp/devicemapping
> 2) udev a new rule in /etc/udev/rules.d
> 2) devlabel assigned name (mapped to UUID), this label in cluster.conf
> further possibilities?
> Nico

Good day Nico

1) I dont know RDAC. From what I was able to gather, it is IBM storage 
specific and an extra add-on (extra to the OS)
2) I found this in the Red Hat Knowledge Base: How can static names be 
assigned for devices in udev for Red Hat Enterprise Linux 4?
3) devlabel is RHEL 3 only

I would recommend (2) since RHEL 4 supports it out of the box and is 

Disclaimer - I myself havent used udev to provide persistent names in a 
RHEL 4 cluster.

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