[PATCH] very rough cut of adaptec hostraid support for dmraid

Darrick J. Wong djwong at us.ibm.com
Thu Dec 22 00:03:00 UTC 2005


Actually, I'm leaving on a trip as we speak, so I'll not be able to get
you your metadata samples until after the holidays.  Sorry about that. :/

But, have a merry Xmas!  I'll talk you after the holidays. :)


Heinz Mauelshagen wrote:
> Darrick,
> thanks a lot for your contribution.
> Integrated into my code base -> builds ok.
> Can you send me same metadata samples ('dmraid -rD' output files
> tar'ed+bzip2'ed) so that I can elaborate this a bit more here, please ?
> RAID10 example(s) would be greate too.
> Hopefully will be able to look more at the code before Xmas.
> Regards,
> Heinz
> On Wed, Dec 14, 2005 at 04:29:24PM -0800, Darrick J. Wong wrote:
>>Below is a very preliminary patch to enable Adaptec HostRAID support in
>>dmraid.  I've been able to configure RAID 0 and 1 arrays on an IBM x226,
>>though I've not had a chance to test it on anything else, such as the
>>SATA HostRAID machine that I have sitting nearby.  I'm sending this
>>patch to this list for review and feedback; at this stage, this patch
>>should not be used by anyone with any valuable data at all.
>>So far, the only testing it's seen is an ad-hoc setup wherein I loaded
>>the a320raid module in SLES9, made a filesystem on the RAID, filled it
>>up with assorted junk, rebooted into to 2.6.14, ran dmraid -ay, and then
>>compared what was on the RAID with the originals.  That worked, so I
>>wrote some data, rebooted back into SLES9, and compared the filesystem
>>contents under a320raid.  That worked too, so off goes the patch.
>>Note that there's quite a bit missing right now--it can't write
>>metadata, spares are totally ignored, and nested RAID setups (RAID10 in
>>particular) are not implemented.  Yet.  Indeed, I'm only interested in
>>making sure that I'm not barking up the wrong tree with this. :)
>>Questions?  Comments?
>>Ataraid-list mailing list
>>Ataraid-list at redhat.com
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> Heinz Mauelshagen                                 Red Hat GmbH
> Consulting Development Engineer                   Am Sonnenhang 11
> Cluster and Storage Development                   56242 Marienrachdorf
>                                                   Germany
> Mauelshagen at RedHat.com                            +49 2626 141200
>                                                        FAX 924446
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