graid hit the tree

Garrett Cooper yanegomi at
Fri Jun 17 13:33:22 UTC 2011

On Fri, Jun 17, 2011 at 6:09 AM, Gavin Atkinson <gavin at> wrote:
> On Thu, 2011-03-24 at 23:48 +0200, Alexander Motin wrote:
>> Hi.
>> I've just committed the new GEOM-based software RAID driver (graid) into
>> the HEAD [1]. Brave testers are welcome. :)
>> 1.
> One question.
> I'm very happy with the performance of the ahci subsystem, it is
> measurably faster against the old ATA subsystem on modern hardware.  I
> also really appreciate the compatibility shims to aid migration from the
> adX style numbering to adaX.  On every system I've migrated so far, this
> mapping has worked flawlessly.
> Is there any chance that mapping from /dev/arX -> /dev/raid/r0 etc could
> also be done?
> One thing that I have found is that it can be hard to determine from the
> dmesg exactly where raid partitions will appear.  It would be wonderful
> if devices similar to the "adX" devices could be made, for any graid
> devices found.

    For this case, would it make more sense to advise folks to use
devfs.conf ? Otherwise one would need to tell geom to talk ataraid a
bit, which may or may not confuse some consumers.

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