Hi Hertha/Gerrard/anyone, SAN disk partitions device files changes with each reboot

[Gerrard Geldenhuis]

Hi
I am not 100% certain myself.

I have config similar to this in our multipath.conf file:
multipaths {
        multipath {
                wwid                    350002ac0xxxxxxx
                alias                   authdb-storage
                }
        }

This ensures that the "friendly" names found in /dev/mpath and
/dev/mapper always stays the same.

I have personnally used /dev/mapper because that is the "kitchen sink"
for all devices and more generic than using /dev/mpath.

When I then create the lvm stuff it would something like this:
pvcreate /dev/mapper/<alias-name>

I know it is not a definitef answer but do hope it helps. Maybe someone
else with more san expierence and linux internal knowledge can help
clear up the matter.

Regards

> -----Original Message-----
> From: redhat-list-bounces at redhat.com [mailto:redhat-list-
> bounces at redhat.com] On Behalf Of sunhux G
> Sent: 27 May 2008 10:12
> To: General Red Hat Linux discussion list
> Subject: Re: Hi Hertha/Gerrard/anyone,SAN disk partitions device files
> changes with each reboot
> 
> Hi Gerrard,
> 
> So ultimately which one should we use?
> /dev/mapper/...     or   ...
> 
> My apologies, I'm a bit confused after reading
> the reply
> 
>  Guess I have to read up more about this at
> http://www.redhat.com/docs/en-
> US/Red_Hat_Enterprise_Linux/5.2/html/DM_Multipath/index.html
> which you gave me previously but haven't got a chance.
> 
> 
> Thanks
> Goh