Re: Proposed enhancements to MD

Matt Domsch
2004-01-16T14:11:41Z

On Fri, 16 Jan 2004, Christoph Hellwig wrote:
> On Fri, Jan 16, 2004 at 02:56:46PM +0100, Lars Marowsky-Bree wrote:
> > If it encodes the bus/id/lun, I can forsee bad effects if the device
> > enumeration changes because the HBAs get swapped in their slots ;-)

I believe it's just supposed to be a hint to the firmware that the drive
has roamed from one physical slot to another.

> A bus/id/lun enumeration is completely bogus.  Think (S)ATA, FC or
> iSCSI.
>
> So is there a pointer to the current version of the spec?  Just reading
> these multi-path enumerations start to give me the feeling this spec
> is designed rather badly..

www.snia.org in the DDF TWG section, but requires you be a member of SNIA
to see at present. The DDF chairperson is trying to make the draft
publicly available, and if/when I see that happen I'll post a link to it
here.

Thanks,
Matt

--
Matt Domsch
Sr. Software Engineer, Lead Engineer
Dell Linux Solutions www.dell.com/linux
Linux on Dell mailing lists @ http://lists.us.dell.com