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Re: [Xen-devel] [PATCH] Improve xenbus timeout error message

On Fri, Jun 30, 2006 at 04:29:45PM +0100, Mark McLoughlin wrote:

> Hi,
>       With latest fedora, we're seeing:
>   XENBUS: Timeout connecting to devices!
>       Attached is a patch to make it a little bit more useful:
>   XENBUS: Timeout connecting to device: device/vif/0
>       The problem is that the timeout occurs before the xennet module can
> ever be loaded, which is to be expected. Anything that can be done to
> avoid the timeout in this case?

The timeout is there to ensure that the boot does not proceed until all the
devices needed during boot are available.  In this case, since it's a vif, if
you were using an NFS root then your boot would presumably fail.

If you need to improve this, you will have to have some way to tell the tools
"these devices I need for boot, these I don't", and then have the tools put a
flag in the store so that Xenbus knows that it doesn't need to wait for them.



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