Tejun Heo writes:
> > and NOTE: the card or driver (or both) for the Promise 300 TX4 isn't
> > stable for production use -- and has a repeatable problem of timing out
> > some drives before it can spin-up from standby (just the drive -- not the
> > computer). The error logically removes the drive from the system until
> > the next boot (unplugging, and replugging in the SATA cable on the drive
> > would hang the machine within 5 seconds of replugging in the cable). Not
> > an instant, hang as might indicated a HW upset plugging in cable, but a
> > couple second delay after plugin -- before keyboard would lock up --
> > pointing toward the software trying to re-add+initialize the drive.
> Some promise controllers seem to suffer transmission problems when
> combined with certain drives, which often show up as timeouts. The
> hardreset of sata_promise wasn't as robust as it should have been and
> in some cases it wasn't able to recover a link after error condition
> causing the system to lose drive after such events. The hardreset
> problem was fixed recently by Mikael Pettersson. Can you please try
> 2.6.28-rc5 and see whether sata_promise still loses drives after
> Mikael, I think the hardreset fix is worthy including into -stable.
> It should be safe for -stable too, right?
The hardreset fix was included in 220.127.116.11. I wanted it in 2.6.26-stable
too, but that branch seems to have been closed now.