Fwd: sorting out this power8 box!

[Adrian Chadd]

---------- Forwarded message ----------
From: Steven Peterson <steven.c.peterson at me.com>
Date: 5 January 2015 at 09:20
Subject: Re: sorting out this power8 box!
To: Adrian Chadd <adrian at freebsd.org>


Here is the note

Problem: QCOW2 can cause corruption under some stress conditions.

Solution: Consider using RAW disk image.As such, the default for
Kimchi is to also use RAW disk image format.


It is on the Power Linux Wiki

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/W51a7ffcf4dfd_4b40_9d82_446ebc23c550/page/IBM%20PowerKVM%202.1.1%20Known%20Issues%20and%20Readme


On Jan 5, 2015, at 11:22, Adrian Chadd <adrian at freebsd.org> wrote:

hi!


On 5 January 2015 at 04:27, Steven Peterson <steven.c.peterson at me.com> wrote:

Btw found a note in the IBM on about corruption of the disk using
powerkvm and qcow2 image format might that be the issue you where
describing?


URL?



-adrian

Steven Peterson

Sent from my iPhone please excuse my brevity and spelling

On Jan 4, 2015, at 23:09, Adrian Chadd <adrian at freebsd.org> wrote:

Hey!

So, we got the basics booting on the hypervisor but nathan hit a
roadblock with the virtualised storage layer getting garbage. It works
on the emulators, but not on the qemu-kvm setup that the hypervisor
platform uses.

He got a bootloader working on bare metal and the kernel loaded enough
to printf("hello, world") right at the beginning out the serial port.

He wrote a kexec bootloader that will suck in FreeBSD and call kexec
to boot it. He was using a PS3 to debug it, as the PS3 already runs
FreeBSD and it also uses an embedded Linux as a bootloader that uses
kexec. :)

So, progress. There's apparently a whole bunch of infrastructure code
that needs writing before we can speak to the rest of the device tree
on the metal. But now that we have the basics up and running the
progress should be nice and quick.

(God it's loud!)

-adrian


On 4 January 2015 at 12:38, Steven Peterson <steven.c.peterson at me.com> wrote:
How goes the hackathon?

On Dec 30, 2014, at 15:54, Adrian Chadd <adrian at freebsd.org> wrote:

Hi,

Thanks. We need some more bootloader support before we can boot -
apparently the firmware for these things uses linux and it kexec's a
new kernel to boot. So we need support for that framework. Nathan is
working on that this week.

Ok, so for the serial ports, what kind of serial ports are they? I'm
likely going to have to acquire DB9/DB25 hardware to match.. :)




-adrian
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