Re: Analyzed/Solved: Booting 2.6.30-rc2-git7 very slow

[Andrew Morton <akpm@linux-foundation.org>]

On Fri, 24 Apr 2009 05:45:19 -0700 (PDT) Martin Knoblauch <knobi@knobisoft.de> wrote:

> 
> 
>  OK, I just found the reason for both intel-ucode and tg3 failures. Apparently between 2.6.28 and 2.6.29 the mount of sysfs has subtely changed from:
> 
> /sys /sys sysfs rw 0 0
> 
> to:
> 
> none /sys sysfs rw,relatime 0 0

I assume that you're referring to the contents of /proc/mounts?

>  The "none" breaks the RHEL-4 provided hotplug script "firmware.agent" when it tries to parse the mount point for "/sys". As a result, the firmware loading is never properly finished and the driver(s) just timeout on the value  in /sys/class/firmware/timeout. Bingo. Simple fix in user-pace possible - cool down Martin :-)
> 
> Questions remains: was this intentional? It breaks existing userspace and should therefore be considered a regression - right? On the other hand, it will never be a problem for RHEL-4/5 kernels, unless the change in 2.6.29 gets backported. Any ideas?

afaik that was unintentional and was probably a mistake.

I wonder how we did that.