Re: [Xen-devel] Re: Failure to setup Xen 3.4.1 Dom0 on top of Ubuntu 9.10 Server HVM DomU ( 2.6.30.2 xenified kernel)

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

Pvops kernel 2.6.31-rc6 frequently hangs at the point of issuing DHCPRELEASE on main ethernet interface at  Dom0 .
After some time (1-2 min) console droppes into stack trace:-

SoltLock  CPU#0 idle for 61 sec!
. . . . . . . . . . .
{DRDY}
SoltLock  CPU#0 idle for 61 sec!
. . . . . . . . . . .
{DRDY}
. . . . .

It doesn't happen to any of xenified kernels 2.6.29.6 or 2.6.30.2 running
via different Grub2 entries under the same Xen 3..4.1 Hypervisor on top
Ubuntu 9.10 Server (alpha 4).

Only cold restart of ADSL modem ( with embedded DHCP server) working
as router to the NET ( ZYXEL P660RT2) allows to issue DHCPDISCOVER
on eth1 (Dom0) , what successfully follows by DHCPOFFER, DHCPREQUEST,DHCPACK , xenbus activation and login prompt finally.

Boris



--- On Mon, 8/31/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: Failure to setup Xen 3.4.1 Dom0 on top of Ubuntu 9.10 Server HVM DomU ( 2.6.30.2 xenified kernel)
To: xen-devel@xxxxxxxxxxxxxxxxxxx, "Christian Tramnitz" <chris.ace@xxxxxxx>
Date: Monday, August 31, 2009, 3:17 AM

The most recent build 2.6.31-rc6 compiled with static cmd line per Chris
works as well as xenified kernels via GRUB2 menuentry on Ubuntu 9.10 Server (alpha 4)

Boris

--- On Sun, 8/30/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: Failure to setup Xen 3.4.1 Dom0 on top of Ubuntu 9.10 Server HVM DomU ( 2.6.30.2 xenified kernel)
To: xen-devel@xxxxxxxxxxxxxxxxxxx, "Christian Tramnitz" <chris.ace@xxxxxxx>
Date: Sunday, August 30, 2009, 2:19 PM

It does help for 2.6..30.2  xenified aka Suse kernel( via Andy Lyon's Patch Set V.3)  and doesn't help for 2.6.31-rc5 pvops enabled kernel.
I can't build  fresh 2-6-31-rc6 at the moment. Make fails.

Boris.

--- On Sun, 8/30/09, Christian Tramnitz <chris.ace@xxxxxxx> wrote:

From: Christian Tramnitz <chris.ace@xxxxxxx>
Subject: [Xen-devel] Re: Failure to setup Xen 3.4.1 Dom0 on top of Ubuntu 9.10 Server HVM DomU ( 2.6.30.2 xenified kernel)
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Date: Sunday, August 30, 2009, 9:26 AM

Afaik grub2 does not pass the boot parameters "root=/dev/sda2 ro console=tty0" to the kernel in multiboot/module combination. I have seen the same problem on gentoo/grub2 and also read about this before. (This is not really Xen specific, but multiboot related).
My workaround was to compile the kernel options as static cmdline into the kernel itself...

Best regards,
   Christian

Boris Derzhavets wrote:
> Karmic Server HVM DomU setup at Xen 3.4.1 Dom0 F11 via virt-install.
> Attempt to build Xen from source and xenified kernel succeeded.
> Before creating Grub 2 entry for Xen Host directive "root=UUID=.."  switched off by editing /etc/default/grub and update-grub run.
>
> Manually created entry /boot/grub/grib.cfg as advised for Debian (Grub 2)
>   Xen 3.4.1 Ubuntu 9.10 {
> multiboot (hd0,1)/xen-3.4.gz
> module    (hd0,1)/vmlinuz-2.6.30.2 root=/dev/sda2 ro console=tty0
> module    (hd0,1)/initrd-2.6.30.2.img
> }
>
> Failure when waiting for /dev/sda2 and dropping to grub prompt
>
> HVM itself loads fine.
>
> Boris.


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