Re: Issue mounting USB mass-storage drive

[Brad Spencer <brad%anduin.eldar.org@localhost>]

mlelstv%serpens.de@localhost (Michael van Elst) writes:

> nagelbh%sdf.org@localhost (Bruce Nagel) writes:
>
>>umass0: failed to create xfers
>
> Usually means the kernel ran out of (contigous) memory. This can be
> a consequence of using USB3, the xhci driver does not support
> multi-segment DMA yet.
>
> It should only happen after some larger uptime when kernel memory
> might be too fragmented.
>
> -- 

I see this with a USB CDROM drive on a Xen DOM0 with no USB3 involved.
I have to take to keeping the drive hooked up when the DOM0 boots in
order to get it to work.  It did not take long uptime for this to fail
for me after boot up.



-- 
Brad Spencer - brad%anduin.eldar.org@localhost - KC8VKS - http://anduin.eldar.org