[dm-devel] Re: fibre channel/multipath questions

[Rik Bobbaers]

On Tuesday 30 August 2005 07:01, christophe varoqui wrote:
> On lun, 2005-08-29 at 18:23 +0100, Christoph Hellwig wrote:
> > I think you can setup dm-multipath based on WWNs, so the device
> > numbers don't matter.  Cc'ed the dm-devel list to verify my assumption.
>
> Yes, true for the multipathed devices, which leaves the problem intact
> for the local drives ...

There is no problem with multipath recognising different devices. Nor is there 
a problem with raid devices.
at boot these are all recognised, if they change, no problem at all...
situation we have:
local disks in raid1 (i'd prefer sda + sdb)
san disks are multipath (sdc and on...)
problem is: lilo.conf... i say: [r|b]oot=/dev/md0
raid-extra-boot="/dev/sda, /dev/sdb"

the last rule poses the problem. depending on how many multipath devices i 
have, i constantly have to change lilo.conf for every machine.

in bsd, there is a way to set your drives to a fixed name, is there something 
alike in linux? or a sollution to this problem? (i'm definately willing to 
help find one, if there isn't... and i guess i'm not the only one with this 
problem?)

thanks in advance all! (and sorry for the spamming)

-- 
harry
aka Rik Bobbaers

K.U.Leuven - LUDIT          -=- Tel: +32 485 52 71 50
Rik.Bobbaers at cc.kuleuven.be -=- http://harry.ulyssis.org

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