Lustre discuss - Jul 2009 - What mechanism to safe Lustre FS when one OST error?

I''m a new bie, I installed Lustre 1.8 on Centos5.2 with some OSTs
I have a question: when an OSTi error, so overall system is can not 
access Files, because strips is placed in this OSTi.
So, what mechanism to safe Lustre FS when one OSTi error?
(Have a mechanism for RAID-OSTs, like RAID-HDD?)

Thanks in advanced!

I''m a new bie, I installed Lustre 1.8 on Centos5.2 with some OSTs
I have a question: when an OSTi error, so overall system is can not 
access Files, because strips is placed in this OSTi.
So, what mechanism to safe Lustre FS when one OSTi error?
(Have a mechanism for RAID-OSTs, like RAID-HDD?)

Thanks in advanced!

On Jul 20, 2009  11:27 +0700, lesonus wrote:
> I''m a new bie, I installed Lustre 1.8 on Centos5.2 with some OSTs
> I have a question: when an OSTi error, so overall system is can not 
> access Files, because strips is placed in this OSTi.
> So, what mechanism to safe Lustre FS when one OSTi error?
> (Have a mechanism for RAID-OSTs, like RAID-HDD?)
Lustre is usually used on top of RAID block devices (e.g. MD RAID, or
harware RAID).  If you want more reliability due to host failure then
you need multi-port storage (h/w RAID), or some people have used DRBD
for this.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.