Re: [bug] sata detection problem

Maciej Rutecki
2009-02-08T12:30:18Z

2009/2/8 Ingo Molnar <mingo@elte.hu>:

[...]

> Look at the weird sda detection. The only _real_ device on this system is the
> ST3320620AS disk which got detected as sdb. But the bogus sda entry crashed the
> (older) OS installation on the box:
>
> [ 20.132252] VFS: Cannot open root device "sda3" or unknown-block(0,0)
>
> Find below a successful bootup. Bug is very sporadic. (seems timing related)
>

I had similar problem few months ago, while laptop hangs during DVD
drive detection. Problem occurs very often when CONFIG_HZ_1000 is set,
but never when CONFIG_HZ=300 is set. I reported this, but I hadn't any
response. Also I think, that is timming issue.

http://kerneltrap.org/mailarchive/linux-kernel/2008/8/11/2898134

--
Maciej Rutecki