Re: USB storage no-boot regression (bisected)

Jeff Garzik
2009-04-15T02:49:11Z

Arjan van de Ven wrote:
> On Tue, 14 Apr 2009 22:30:28 -0400
> Jeff Garzik <jeff@garzik.org> wrote:
>
>> Arjan van de Ven wrote:
>>> This change just made it go faster enough for you to be out of luck;
>>> fundamentally your userland needs to wait if the device it wants is
>>> not there.
>> All these drivers are in-kernel, and the root device is passed via
>> command line. There is no userland at that point, that needs to wait.
>
> ok fair; but that does not change that the kernel does not know if a
> device is coming.
> Yes that sucks; sadly USB is just this way, you don't know when no new
> devices will come from a certain bus.

Perhaps -- but I can say that kernels <= 2.6.27 booted with 100%
reliability.

Now, Kernels >= 2.6.28 always fail.

The ONLY variable is the kernel.

Jeff