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Old 26th March 2013
gpatrick gpatrick is offline
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Default NetBSD 6.1_RC2 and Xen 4.2.0/4.2.1

Have NetBSD 6.1_RC2 amd64 installed and downloaded the Xen source for 4.2.0 and 4.2.1 then followed the steps in Compiling Xen from Source on NetBSD

It boots into the Xen kernel, however, when attempting to create a NetBSD domu, the 'xm create' command returns
# xm create -c nbsd.cfg
Ignoring invalid configuration file /usr/pkg/xen420/etc/xen/xm-config.xml.
Using config file "./nbsd.cfg".
Error: need more than 1 value to unpack
It is the same error for both Xen 4.2.0 and 4.2.1.

kernel = "/var/xen/kernels/netbsd-INSTALL_XEN3_DOMU.gz"
memory = 128
name = 'nbsd'
vif = [ 'mac=00:16:3e:00:00:11, bridge=bridge0' ]
disk = [ 'file:/var/xen/images/xen-2GB.img,0x1,w' ]
root = "xbd0"
Image file was created using
# dd if=/dev/zero of=/var/xen/images/xen-2GB.img bs=1024 count=1 seek=2000000
I haven't found much in searching for the error about "1 value to unpack".

After having no luck in finding anything relevant I've installed Xen33 from pkgsrc and am able to successfully create a NetBSD domU.

Last edited by gpatrick; 26th March 2013 at 01:37 AM.
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Old 29th March 2013
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s0xxx s0xxx is offline
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Posts: 192

I've found two links where similar problem is discussed, I think NetBSD xen list also has a patch (or updated archive, I just glanced over the answers), check them out and see if they are of any help:

(read the whole thread) http://mail-index.netbsd.org/port-xe...msg006559.html

The best way to learn UNIX is to play with it, and the harder you play, the more you learn.
If you play hard enough, you'll break something for sure, and having to fix a badly broken system is arguably the fastest way of all to learn. -Michael Lucas, AbsoluteBSD
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