Re: [uml-user] udev hangs on boot when using a cow file

[richard -r. w. <ric...@gm...>]

Dan,

On Mon, Sep 26, 2011 at 6:27 PM, Dan Bassett <dba...@or...> wrote:
> I'm having issues when using cow files with CentOS6 system images.  It
> is specific to CentOS6.  When I tried with a debian image built with
> debootstrap, the system booted just fine.  I am experiencing this issue
> both with a custom built UML kernel as well as the kernel I obtained
> from the debian repository (2.6.32-1um-4+34squeeze1)

Is the issue related to CentOS 6 or udev?
IOW does the same udev version work on e.g. Debian?

> The issue I am experiencing is that during the boot process, udev hangs
> forever and the boot process does not complete.  It only occurs when I
> use a cow file by specifying just the cow file on the command line like
> "ubd0=cow_fs" rather than "ubd0=cow_fs,root_fs".  When I specify both
> the cow file and the backing file, the problem doesn't happen.  I am
> able to specify ubd0 either way with a debian image and the system boots
> as expected.  I have tried editing the appropriate rc script in the
> CentOS6 image to take udev out of the boot process, and the system
> boots, but has problems related to udev not running.

Can you find out _where_ udev hangs?
Is it a endless loop? A blocking system call?

-- 
Thanks,
//richard