Install NetBSD guest on Linux host?

Install NetBSD guest on Linux host?

[Gerd Hoffmann]

  Hi,

xen3 domU support has been merged to the netbsd-3 branch according to
netbsd.org.  So I went to netbsd-daily
(.../NetBSD-daily/netbsd-3/200606090000Z/i386/binary/), fetched the bits
and tried to boot the installer kernel.  Didn't work.  Any idea what I'm
doing wrong?

my config file looks like this:

------------- cut here ---------------
# general
name    = "netbsd";
memory  = 128;

# booting
kernel  = "/vm/netbsd/netbsd-INSTALL_XEN3_U.gz";
on_crash = "destroy";

# virtual harddisk
disk = [ 'phy:xen/netbsd,0,w' ];

# virtual network
vif = [ 'mac=aa:00:62:73:64:00' ];
dhcp = "dhcp";

------------- cut here ---------------

Trying to boot results in this:

------------- cut here ---------------
Started domain netbsd
[ Kernel symbol table missing! ]
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

panic: HYPERVISOR_mmu_update failed

Stopped in pid 0.1 () at        0xc021f2eb:     leave
?(c07490c0,7ff0,d,c0794ea4,c022cb0f) at 0xc021f2eb
?(c0258d9b,0,1fa57a4,14041a63,c0794f0c) at 0xc01c9cb2
?(1,0,8d80,1,1) at 0xc022cb0f
?(c07658a0,c09e9000,80fb000,7,13) at 0xc02289d9
?(c0748d80,1000,0,c075f800,c0794f74) at 0xc0210fc5
?(c09e8000,fbc00000,c0794f68,c0794f6c,c09e8000) at 0xc022501b
?(c024f8d2,c0247c60,c076390c,1,4000) at 0xc02106fc
?(0,0,0,0,0) at 0xc01a5677
ds          0x11
es          0x11
fs          0x31
gs          0x11
edi         0xc0258d9b
esi         0x100
ebp         0xc0794e78
ebx         0xc0794e98
edx         0xc079a000
ecx         0
eax         0xc079a000
eip         0xc021f2eb
cs          0x9
eflags      0x202
--db_more--
------------- cut here ---------------

xen says (recent -testing tree):
(XEN) DOM9: (file=mm.c, line=1082) Bad L1 flags 800

The "Kernel symbol table missing!" message looks suspious to me as there
is a special loadbsdsymtab() function in the domain builder, so it
should be there, no?

cheers,

  Gerd

-- 
Gerd Hoffmann <kraxel@suse.de>
http://www.suse.de/~kraxel/julika-dora.jpeg

Re: Install NetBSD guest on Linux host?

[Keir Fraser]

On 14 Jun 2006, at 13:26, Gerd Hoffmann wrote:

> xen3 domU support has been merged to the netbsd-3 branch according to
> netbsd.org.  So I went to netbsd-daily
> (.../NetBSD-daily/netbsd-3/200606090000Z/i386/binary/), fetched the 
> bits
> and tried to boot the installer kernel.  Didn't work.  Any idea what 
> I'm
> doing wrong?

You can't run a debug build of Xen because we steal bit 11 of PTEs to 
indicate grant-table mappings. But that bit is actually used by NetBSD.

It might be time to remove that debugging, or at least not make it 
dependent on debug=y.

  -- Keir

Re: Install NetBSD guest on Linux host?

[Gerd Hoffmann]

> You can't run a debug build of Xen because we steal bit 11 of PTEs to
> indicate grant-table mappings. But that bit is actually used by NetBSD.

Ah, ok.  A non-debug build boots netbsd much better and the install
actually starts ;)

Now the kernel crashes when the installer attempts to write the
disklabel :-(

Guess there is something wrong with the disk configuration.

I tries first with
  disk = [ 'phy:xen/netbsd,wd0d,w' ];

which I picked from the xen2 netbsd howto.  Building the domain fails,
xend gives me this:

[2006-06-14 17:24:28 xend] ERROR (xmlrpclib2:124) int argument required
Traceback (most recent call last):
  File "/usr/lib/python/xen/util/xmlrpclib2.py", line 103, in
_marshaled_dispatch
    response = self._dispatch(method, params)
  File "/usr/lib/python2.4/SimpleXMLRPCServer.py", line 406, in _dispatch
    return func(*params)
  File "/usr/lib/python/xen/xend/server/XMLRPCServer.py", line 63, in
domain_create
    info = XendDomain.instance().domain_create(config)
  File "/usr/lib/python/xen/xend/XendDomain.py", line 227, in domain_create
    dominfo = XendDomainInfo.create(config)
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 183, in create
    vm.initDomain()
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 1233, in
initDomain
    self.createDevices()
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 1393, in
createDevices
    self.createDevice(n, c)
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 1009, in
createDevice
    return self.getDeviceController(deviceClass).createDevice(devconfig)
  File "/usr/lib/python/xen/xend/server/DevController.py", line 80, in
createDevice
    (devid, back, front) = self.getDeviceDetails(config)
  File "/usr/lib/python/xen/xend/server/blkif.py", line 59, in
getDeviceDetails
    front = { 'virtual-device' : "%i" % devid }
TypeError: int argument required


Now I have
  disk = [ 'phy:xen/netbsd,0,w' ];

which I think isn't correct too, but it boots the guest at least ...

cheers,
  Gerd


-- 
Gerd Hoffmann <kraxel@suse.de>
http://www.suse.de/~kraxel/julika-dora.jpeg