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?
http://kbase.redhat.com/faq/FAQ_43_8082.shtm
3) devlabel is RHEL 3 only
I would recommend (2) since RHEL 4 supports it out of the box and is
storage-agnostic.
Disclaimer - I myself havent used udev to provide persistent names in a
RHEL 4 cluster.
Riaan
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