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

Heinz Mauelshagen mauelshagen at redhat.com
Wed Dec 21 14:12:41 UTC 2005


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.


On Wed, Dec 14, 2005 at 04:29:24PM -0800, Darrick J. Wong wrote:
> Hi,
> 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?
> --D

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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Cluster and Storage Development                   56242 Marienrachdorf
Mauelshagen at RedHat.com                            +49 2626 141200
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