Re: Serial ATA (SATA) for Linux status report

From: Justin Cormack
Date: Thu Dec 04 2003 - 08:40:23 EST

On Wed, 2003-12-03 at 23:36, Jeff Garzik wrote:
> Andre Tomt wrote:
> > On Wed, 2003-12-03 at 21:44, Jeff Garzik wrote:
> >
> >>Intel ICH5
> >>----------
> >>Summary: No TCQ. Looks like a PATA controller, but with a few added,
> >>non-standard SATA port controls.
> > One question - with "including hotplug", does that mean some set hotplug
> > standard? Reason I'm asking is, we have a few servers from SuperMicro,
> > with a ICH5R S-ATA controller that claims it's supporting hotplug, but
> > hotplug is not in your ICH5-summary.
> Alas, there is no hotplug support in the ICH5 or ICH5-R SATA hardware.
> One could argue there is "coldplug" support in that hardware -- disable
> the entire interface, including any active devices, then re-enable and
> re-scan -- but it's a bit of a hack. If there's enough demand, I could
> write some code for that. It would involve something like
> # /sbin/sata off
> { plug in or remove a device }
> # /sbin/sata on
> You really, really, really don't want to actually unplug a SATA drive
> while it's active, on ICH5 hardware.

How does it work on other hardware?


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