[dm-devel] Changing SAN vendors
Tore Anderson
tore at linpro.no
Fri Feb 6 07:41:09 UTC 2009
* Allen, Jack
> The Answer: The friendly names are kept in
> /var/lib/multipath/bindings. Because the WWID changed multipathd created
> new entries. All I had to do was remove the entries for the old WWID and
> change the friendly name for the new WWID. Simple, but hard to locate
> the file when no documents I could find to begin with tells you that is
> where the friendly names are kept.
>
> The Question: The first system was running RH EL 5.2, but the next
> system is running RH AS 4.7. There was no /var/lib/multipath directory,
> therefore no bindings file. So I created both, and entered mpath0 and
> mpath1 with the WWID, but it still uses mpath2 and mpath3. I know
> multipathd are different version between the two RH Release. Is there
> something else I need to change on the RH AS 4.7 system to make it use
> the mpath0 and mpath1 names?
I suggest you configure the names statically in /etc/multipath.conf
instead, this will work in both RHEL 4 and 5. This will also allow you
to give the devices more descriptive names than just "mpathN". For
instance:
multipaths {
multipath {
wwid 36006016034301f00b8934c11c241dd11
alias oracle
}
multipath {
wwid 36006016034301f001c578c8bab21dd11
alias varwww
}
}
Regards,
--
Tore Anderson
Redpill Linpro AS - http://www.redpill-linpro.com/
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