Re: Xen 4 DOM0 with -current i386/amd64 rejects kernel?

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Feb 13, 2012 at 09:49:37AM -0600, John D. Baker wrote:
> On Sat, 11 Feb 2012, Manuel Bouyer wrote:
> 
> >On Fri, Feb 10, 2012 at 02:43:39PM -0600, John D. Baker wrote:
> >>Loading /stand/db/entropy-file Loading /netbsd-XEN WARNING: 6
> >
> >I think this is the problem:  /netbsd-XEN should be the first module
> >to be loaded. xen.gz will use the first module as dom0 kernel.
> >I'm not sure entropy-file will work with a Xen dom0 kernel (this is
> >new, I've not had time to play with it yet).
> 
> >>menu=Boot Xen w/512MB dom0, single-user (serial):rndseed 
> >>/stand/db/entropy-file;load /netbsd-XEN console=com0 -s;multiboot /xen.gz 
> >>dom0_mem=512M console=com1 com1=9600,8n1
> >
> >Maybe try to put the rndseed entry after the load entry ?
> 
> I've made this change.  It loads the kernel first and then the entropy
> file.  Boot log at:
> 
>   http://bobdbob.com/~jdbaker/nbsd-debug/boot-squash-XEN4-almost.txt
> 
> It now loads and starts the dom0 kernel.  Looks like ACPIVERBOSE is
> compiled in.

It is.

> It gets down to enumerating USB hubs and seems to be stuck
> there, or at least produces no further output (expecting the 'Enter path
> to command interpreter or return for "sh"' message).
> 
> I pressed the power switch.  Seems Xen only stops the dom0 kernel, but
> doesn't power the hardware off.  So I held it down and rebooted a normal
> kernel.  Now rebuilding following the latest updates.  I'll try again
> when done--with and without the "rndseed" command.

My guess is that it booted up to mounting root, but for some reason
output to console stopped> I think it's Xen which doesn't keep up with
the data from the NetBSD kernel; I'm seeing something similar on my
serial console with Xen 4.1:
[...]
^Macpi0: [FADT] GPE0_BLK       : 0x0000000000001028
^Macpi0: [FADT] GPE1_BLK       : 0x0000000000000000
^Macpi0: [FADT] PM1_EVT_LEN    : 0x0000000000000004
^Macpi0: [FADT] PM1_CNT_LEN    : 0x0000000000000002
^Macpi0: [FADT] PM2_CNT_LEN    : 0x0000mountroot: trying smbfs...
^Mmountroot: trying ntfs...
^Mmountroot: trying nfs...
^Mmountroot: trying msdos...
^Mmountroot: trying lfs...
^Mmountroot: trying ext2fs...
^Mmountroot: trying ffs...
^Mroot file system type: ffs
[...]
Did you try pressing 'enter' before the
power button ? Maybe it was already at the sh prompt ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--