FreeBSD DomU: Upgrade from 7.2 to 8.0

[G VM]

From: mikemacleod at gmail.com
Date: Tue, 20 Jul 2010 07:53:04 -0400
Subject: Re: FreeBSD DomU: Upgrade from 7.2 to 8.0
To: drums_gvm at hotmail.com
CC: alex at nirgal.de; got.andras at deployis.eu; freebsd-xen at freebsd.org

If you're booting the XEN kernel, it's going to need to be running in paravirtualized mode. It lacks drivers for non-XEN devices. Also, I have found the XEN kernel running in paravirtualized mode to be nowhere near stable enough for production use. I have used 8.0 with the GENERIC kernel in several domUs (running on Xen 3.4.2 and 4.0) successfully.



This config file will work for an 8.0 box:

# Name of the domU
name = "freebsd-01"
# HVM options
kernel = "/usr/lib/xen/boot/hvmloader"
device_model = "/usr/lib64/xen/bin/qemu-dm"


builder = 'hvm'
# Virtual hardware configuration
vcpus = 1
memory = 512
disk = [ 'phy:/dev/SystemDisks/freebsd-01.root,hda,w' ]
vif = [ 'type=ioemu,bridge=eth0' ]
# Console and other options


serial = 'pty'
vfb = [ 'vnc=1,vncdisplay=1' ]


On Tue, Jul 20, 2010 at 7:45 AM, G VM <drums_gvm at hotmail.com> wrote:






> From: alex at nirgal.de

> To: got.andras at deployis.eu

> Date: Tue, 20 Jul 2010 13:31:48 +0200

> CC: freebsd-xen at freebsd.org

> Subject: Re: FreeBSD DomU: Upgrade from 7.2 to 8.0

>

> Hello,

>

> Am 20.07.2010 um 12:52 schrieb Gót András:

>

> > How's your domU config file for xen?

>

> Up until 7.2 i have used the GENERIC Kernel and never built one of my

> own, because there was no need. But as 7.3 or 8.0 will not boot up

> with their GENERIC Kernels (tested with the Live-DVD, error described

> in my first mail), i think i have to built a custom kernel.

>

> I plan to use the config from

>

>    /usr/src/sys/i386/conf/XEN

>

> You can find it there:

>

>    http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/conf/XEN?rev=1.9.2.1;content-type=text%2Fplain;only_with_tag=RELENG_8_0



>

> Note: i just want to use hvm-virtualization, paravirtualization is not

> necessary.

>

> Alex_______________________________________________

> freebsd-xen at freebsd.org mailing list

> http://lists.freebsd.org/mailman/listinfo/freebsd-xen

> To unsubscribe, send any mail to "freebsd-xen-unsubscribe at freebsd.org"



I had/have the exact same issue. I always used hvm with FreeBSD 7.2

>From the moment I upgraded to 7.3 or 8.0, I get a kernel panic.



Even the install cd does not boot for 7.3 or 8.0.



I did not fixed this yet. I would think that this is happening since there is some virtual stuff included in the kernel by default now and this was not there in 7.2

Maybe you can just disable hvm or something in the kernel config. As IIRC with HVM the OS is not aware that it is virtualised.



Please let me know if you find a solution!



Greetings!

                                          _______________________________________________

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http://lists.freebsd.org/mailman/listinfo/freebsd-xen

To unsubscribe, send any mail to "freebsd-xen-unsubscribe at freebsd.org"



I use a config with HVM(just like the one above). There are virtualization extensions on the cpu and those are enabled. (do note that I am using an AMD chip).
It just does not run 8.0 and 7.3(nor the 64 bit nor the 32bit cd).
7.2 is running very stable for me.

So I would expect that this wont fix this issue.

Greetings!