Re: [GIT PULL] kdbus for 4.1-rc1

David Lang
2015-04-30T00:06:08Z

On Wed, 29 Apr 2015, Theodore Ts'o wrote:

> On Wed, Apr 29, 2015 at 12:26:59PM -0400, John Stoffel wrote:
>> If your customers wnat this feature, you're more than welcome to fork
>> the kernel and support it yourself. Oh wait... Redhat does that
>> already. So what's the problem? Just put it into RHEL (which I use
>> I admit, along with Debian/Mint) and be done with it.
>
> Harald,
>
> If you make the RHEL initramfs harder to debug in the field, I will
> await the time when some Red Hat field engineers will need to do the
> same sort of thing I have had to do in the field, and be amused when
> they want to shake you very warmly by the throat. :-)
>
> Seriously, keep things as simple as possible in the initramfs; don't
> use complicated bus protocols; that way lies madness. Enterprise
> systems aren't constantly booting (or they shouldn't be, if your
> kernels are sufficiently reliable :-), so trying to optimize for an
> extra 2 or 3 seconds worth of boot time really, REALLY isn't worth it.

I've had Enterprise systems where I could hit power on two boxes, and finish the
OS install on one before the other has even finished POST and look for the boot
media. I did this 5 years ago, before the "let's speed up boot" push started.

Admittedly, this wasn't a stock distro boot/install, it was my own optimized
one, but it also wasn't as optimized and automated as it could have been
(several points where the installer needed to pick items from a menu and enter
values)

David Lang