[Lustre-discuss] thumper disk write cache patch

[Syuuichi Ihara]

Hi Andreas,

Yes, I absolutely agree. I will file this as RFE.
But, the patch is useful now as work-around for disabling the write cache of all of drives.

Thanks,

-Ihara

Andreas Dilger wrote:
> On Nov 02, 2007  10:32 +0900, Syuuichi Ihara wrote:
>> I have just filed the patch for disabling the write cache for mv_sata.
>> Please see below.
>> https://bugzilla.clusterfs.com/show_bug.cgi?id=14040
> 
> Ihara-san,
> have you looked at submitting this patch to the upstream driver maintainers
> and/or Red Hat?  It looks like the patch is hard coded to disable the write
> cache, but it would be desirable to allow this to be a tunable parameter
> (e.g. module parameter, or /proc setting?)
> 
>> Martin Gasthuber wrote:
>>>    we are in the process of configuring a thumper (Sun X4500) running  
>>> RHEL 4.5 as an OSS/OST - for this we need a patch for the Sun-Marvell  
>>> driver to disable the disk write cache - did anybody has this patch ???
> 
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Software Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
> 
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at clusterfs.com
> https://mail.clusterfs.com/mailman/listinfo/lustre-discuss