Re: root on sd0a on odroid-c1

[Nick Hudson <skrll%netbsd.org@localhost>]

On 02/25/16 14:34, Andrew Cagney wrote:
> On 22 February 2016 at 12:46, Andrew Cagney <andrew.cagney%gmail.com@localhost> wrote:
> > On 20 February 2016 at 17:14, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
> > > andrew.cagney%gmail.com@localhost (Andrew Cagney) writes:
> > >
> > > > so I simply added root=sd0a to /boot/boot.ini's boot line.  That resulted in:
> > > [...]
> > > > use one of: awge0 ld0[a-p] ddb halt reboot
> > > > Should this have worked?

Can you post a full dmesg?

As Michael says the usb explore code doesn't wait properly here. There 
was code, but it's bit rotted.


> Just FYI,
>
> Tried a similar configuration on the Pi (i.e., same physical disk, but
> did add ta powered USB hub), and it's working fine.  Hmm, perhaps it
> is a power issue.

Maybe.

> Andrew
>
> > > > However, I get the feeling that there's more going on.  For instance,
> > > > just adding an entry to /etc/fstab to mount of /dev/sd0a on /mnt fails
> > > > during boot (fsck can't access /dev/rsd0a during the boot).  Yet once
> > > > the system is booted it works fine.
> > > The USB disk is probably starting too slowly to be recognized at this
> > > point. There needs to be some kind of spin-up delay in the kernel to
> > > handle this situation.

There used to be one as mentioned above.

Can you try -current as of today - I made a change to dwctwo(4) this 
morning that *might* help here.

Nick