[Cbe-oss-dev] [PATCH 2.6.23] PS3: Ignore storage devices that are still being probed

[Geert Uytterhoeven]

On Fri, 7 Sep 2007, Michael Ellerman wrote:
> On Fri, 2007-09-07 at 01:49 -0700, Geoff Levand wrote:
> > Geert Uytterhoeven wrote:
> > > PS3: A storage device may show up in the repository before the hypervisor has
> > > finished probing:
> > >   - If its type is not yet known, it shows up as PS3_DEV_TYPE_STOR_DUMMY,
> > >   - If its regions are being probed, it shows up as having zero regions.
> > > If any of these happen, consider the device not yet present.  The storage
> > > probe thread will retry later.
> > > 
> > > This fixes the timing-dependent problem where a kernel booted from FLASH ROM
> > > sometimes cannot find the hard disk.
> > > 
> > > Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven at sonycom.com>
> > 
> > Paul,
> > 
> > This fixes a problem reported by users, so it would be nice for it to go
> > in for 2.6.23 if possible.  Sorry for it being so late. 
> 
> Does it only happen when booting from flash? If so why? I'm seeing the
> same symptom (hard disk not showing up), but booting from kboot.

So far we've seen it ourselves when booting from flash only. That doesn't
necessarily mean it cannot happen when booting from kboot.

It depends a lot on timing: firmware version, hard disk model, kernel config,
cold or warm boot, ... That's why it was so hard to track down.

Does the patch fix the problem for you?
What kernel are you using the first place?

With kind regards,
 
Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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