Re: call for testing: mfi(4)

["Brian A. Seklecki" <bseklecki%collaborativefusion.com@localhost>]

On Mon, 2008-04-21 at 21:44 +0200, Christoph Egger wrote:
> Brian A. Seklecki wrote:
> > On Sun, 2008-04-20 at 23:58 -0400, Brian A. Seklecki (Mobile) wrote:
> >> On Sat, 2008-04-19 at 12:45 +0200, Christoph Egger wrote:
> >>> Hi!
> >>>
> >>> I need someone who can reproduce this crash:
> >>>
> >>> http://mail-index.netbsd.org/port-xen/2008/04/10/msg003555.html
> >> Sorry for the delay.  I'll be able to to test it in the AM.
> >> Unfortunately, that machine is getting rebuilt immediately there-after
> >> with FreeBSD (don't ask)
> > 
> > At 128MB for the Dom0, the pmap problem with mfi(4) is gone, but now
> > manifests itself in bnx(4), 192MB seems to be a good consensus.
> > 
> > See attached for panic @ 128MB Dom0
> 
> Are you using the configuration where you got the crash in mfi(4)
> and you use the mfi patch ?


Yes -- we're talking about at boot time, so the "configuration" would be
the stock XEN3_DOM0 config and the GRUB menu.lst:


title Xen 3.1.3 (256MB) / NetBSD (hda0, serial) #okay
  root(hd0,0)
  kernel (hd0,a)/xen.gz dom0_mem=262144 com1=9600,8n1
  module (hd0,a)/netbsd-xen bootdev=/dev/sd0a ro console=ttyS0 

title Xen 3.1.3 (192MB) / NetBSD (hda0, serial) #okay
  root(hd0,0)
  kernel (hd0,a)/xen.gz dom0_mem=196608 com1=9600,8n1
  module (hd0,a)/netbsd-xen bootdev=/dev/sd0a ro console=ttyS0 

title Xen 3.1.3 (128MB) / NetBSD (hda0, serial) #bnx(4) = panic
  root(hd0,0)
  kernel (hd0,a)/xen.gz dom0_mem=131072 com1=9600,8n1
  module (hd0,a)/netbsd-xen bootdev=/dev/sd0a ro console=ttyS0 

~BAS


> 
> > ~BAS
> > 
> > P.S. Maybe I'm greedy, but I would think that the Xen kernel + NetBSD
> > DOM0 + MFS could use ~128MB or less in a Veso-like deployment,
> > maximizing physical RAM available to DomUs.  Dom0 existing to manage
> > iSCSI targets, provide VLAN bridging, environmental data, and RAID
> > monitoring optionally (just musing)
> > 
> > 
> >> ~BAS
> >>
> >>
> >>> I want to know if this patch fixes it.
> >>>
> >>> http://www.netbsd.org/~cegger/mfi.diff
> >>>
> >>> Christoph
> >>>
> 
-- 
Brian A. Seklecki <bseklecki%collaborativefusion.com@localhost>
Collaborative Fusion, Inc.