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

[Gerrard Geldenhuis]

> -----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.
> 

Please, please read the document... its not that long and would be an
hour well spend. It discusses things like adding exception lists in lvm
which prevents lvm scanning inactive backup luns, which could
subsequently cause them to become active, possibly creating lots of
uneccesary swapping between paths.

Regards