Re: [RFH] xen domain0 failover stuff

[Ryan Harper <ryanh@us.ibm.com>]

* Don Zickus <dzickus@redhat.com> [2006-03-31 09:41]:
> On Thu, Mar 30, 2006 at 09:48:12PM -0800, Chris Wright wrote:
> > * Don Zickus (dzickus@redhat.com) wrote:
> > > Continuing on my project to get a domain0 to failover to a second domain0,
> > > I have stumbled upon an out of memory problem.  Does anyone know what type
> > > of quirky scenario I would have had to create in order to have
> > > xen_create_contiguous_region() fail within
> > > swiotlb_init_with_default_size() of the linux x86_64 kernel?  
> > 
> > Sounds like nothing other than running low on that amount of contiguous
> > pages.
> > 
> > CTRL-a CTRL-a CTRL-a m
> > 
> > Typing that should show you what's available, I suspect it's less than
> > the swiotlb is asking for.
> 
> You know I have never been able to get this to work.  It keeps wanting to
> initializing my modem (minicom uses the same CTRL-a interface).  :)  Or
> maybe this is because I am using the redhat version.  

The conswitch parameter to xen allows you to change the key used with
control to switch between Xen and Dom0 serial input.  I use 'x' and
don't have to reconfigured minicom.

title Xen 3.0-unstable / XenLinux 2.6.11
kernel /boot/xen.gz dom0_mem=524288 com1=115200,8n1 conswitch=x
module /boot/vmlinuz-2.6.11-xen0 root=/dev/sda1 ro console=tty0

-- 
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253
ryanh@us.ibm.com