Re: How to build dm-raid4-5 module ?

On Thu, Mar 02, 2006 at 10:50:01AM -0800, Jane Liu wrote:
>  
> > FYI: the patch available on my people page is excluding
> >     Makefile and Kconfig changes; need to provide an updated one...
> 
> I see. I didn't get a chance to look up the actual patch. Hope I didn't
> confuse anyone.

Not me ;)

> 
> > Do you have evidence (tests etc.) for the degraded case not handled
> properly ?
> > I'ld be interested in those.
> 
> No, I don't have any evidence from tests. I just remembered the issue
> with array members being reordered if one member is missing. The
> proposed solution was to fill in the "gaps" with error mappings. Is that
> already done in rc10?

Ah, I misunderstood your concern.
Error mapping replacement in dmraid needs to be done for RAID4+5 mappings still.

Heinz

> 
> > Thanks,
> > Heinz
> 
> On Wed, Mar 01, 2006 at 06:41:05PM -0800, Jane Liu wrote:
> > Ralph,
> > 
> > I don't know what kind of compile errors you are getting, but if it
> has something to do with missing dm-split and dm-iostats, I think you
> can just remove references to those from the Makefile.
> > 
> > Please understand that the nvidia raid5 support in dmraid is still
> work-in-progress. Activating a degraded raid5 array is _not_ handled
> properly and may result in data corruption. Please be sure to back up
> your data.
> > 
> > Regards,
> > Jane
> > 
> > -----Original Message-----
> > From: [email protected]
> [mailto:[email protected]] On Behalf Of
> [email protected]
> > Sent: Wednesday, March 01, 2006 4:54 PM
> > To: [email protected]
> > Subject: How to build dm-raid4-5 module ?
> > 
> > 
> > Hello,
> > 
> > i am trying to build this dm-raid4-5 kernel module to get my nvidia
> > raid5 running. I?ve downloaded, patched und build kernel 2.6.15.4.
> After
> > changing the Makefile it compiles dm-raid4-5, but i?m getting errors
> > like there are some things not included. I can post a more detailed
> > report later, but may someone can tell me the way to build this
> module.
> > Greetings,
> > 
> > Ralph
> > 
> > 
> > 
> > 
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> > 
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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Cluster and Storage Development                   56242 Marienrachdorf
                                                  Germany
[email protected]                            +49 2626 141200
                                                       FAX 924446
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