Pkg xen devel - Jun 2006 - Xen from backports on sarge not working

Hi,

	I've downloaded and installed the Xen packages from backports.org
in a box with sarge, and it doesn't work. That's the short story. Now
the
long one :-)

	The problem is that I can't bring up the domUs. This is the error
displayed when I try:

~# xm create -c chen.cfg
Using config file "/etc/xen/chen.cfg".
Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

	And the configuration file chen.cfg is:

kernel = '/boot/vmlinuz-2.6.16-1-xen-686'
ramdisk = '/boot/initrd.img-2.6.16-1-xen-686'
memory = 128
name   = 'chen'
root   = '/dev/hda1 ro'
disk   = [ 'phy:vg0/chen-root,hda1,w',
'phy:vg0/chen-swap,hda2,w' ]
vif = [ 'ip=192.168.20.200', 'mac=00:16:3E:CE:00:FF' ]

	And my /etc/xen/xend-config.sxp (comments removed):

(xend-relocation-server yes)
(xend-relocation-hosts-allow '^localhost$')
(network-script 'network-bridge netdev=dummy0')
(vif-script vif-bridge)
(dom0-min-mem 196)
(dom0-cpus 0)

	I thought the interface dummy0 might be a problem, but exactly the
same happened when I tried to use a "real" interface like eth1.

	Something strange that I noticed, adding "-x" to the scripts
/etc/xen/scripts/network-bridge and /etc/xen/scripts/vif-bridge, is that
nothing was displayed; i.e., I think the scripts were not executed (or
maybe stderr is redirected to some logs, or hidden, and that's the reason
that I could see nothing :-?). This could be the issue, but I'm a bit stuck
and don't know how to follow from here :-/

	What puzzles me is that I have another box with the packages from
sid, and there I had no problem at all: install, configure and run, without
hassles. Would it be possible that there is something ackward involving the
backports, or the libraries in sarge, or something alike?

	The versions I'm using are:

ii  linux-image-2.6.16-1-xen- 2.6.16-11bpo1             Linux kernel 2.6.16
image on PPro/Celeron/PII/PIII/P4 machines
ii  xen-hypervisor-3.0-i386   3.0.2+hg9681-0bpo1        The Xen Hypervisor for
i386
ii  xen-tools                 1.5-1                     Tools to manage debian
XEN virtual servers
ii  xen-utils-3.0             3.0.2+hg9681-0bpo1        XEN administrative tools

	Let me know if there is any other package that I should list. Any
hints, tips, voodoo rituals or other solutions are welcome. Thanks in
advance :-)

-- 
	Roberto Suarez Soto				Allenta Consulting
	robe@allenta.com				   www.allenta.com

On Tue, Jun 20, 2006 at 12:03:40PM +0200, Roberto Suarez Soto
wrote:
> 	Let me know if there is any other package that I should list. Any
> hints, tips, voodoo rituals or other solutions are welcome. Thanks in
> advance :-)
udev, hotplug ?

-- 
Julien Danjou
.''`.  Debian Developer
: :' : http://julien.danjou.info
`. `'  http://people.debian.org/~acid
  `-   9A0D 5FD9 EB42 22F6 8974  C95C A462 B51E C2FE E5CD
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On Jun/20, Julien Danjou wrote:
> > 	Let me know if there is any other package that I should list. Any
> > hints, tips, voodoo rituals or other solutions are welcome. Thanks in
> > advance :-)
> udev, hotplug ?
	
	hotplug is not present in the system, and the version of udev is
0.091-1bpo1 (the one in sarge).

-- 
	Roberto Suarez Soto				Allenta Consulting
	robe@allenta.com				   www.allenta.com

Roberto Suarez Soto skrev:
> Error: Device 0 (vif) could not be connected. Hotplug scripts not working.
> 
> 	And the configuration file chen.cfg is:
> vif = [ 'ip=192.168.20.200', 'mac=00:16:3E:CE:00:FF' ]
> 	And my /etc/xen/xend-config.sxp (comments removed):
> (network-script 'network-bridge netdev=dummy0')
> (vif-script vif-bridge)
Maybe I don't get the whole picture here but I'd guess that you're
aiming for either something like this:

(network-script network-dummy)
(vif-script vif-bridge)

OR, to specify add a real NIC (other than eth0) as the bridge-port:

(network-script 'network-bridge netdev=eth1')
(vif-script vif-bridge)

//conny

On Jun/20, Roberto Suarez Soto wrote:
> 	I've downloaded and installed the Xen packages from backports.org
> in a box with sarge, and it doesn't work. That's the short story.
Now the
> long one :-)
[...]

	Fixed. The problem is that the scripts in /etc/xen/scripts assume
that /bin/sh is /bin/bash, and in my case it was /bin/dash. So the file
/var/log/xen-hotplug.log was full of:

trap: 53: ERR: bad trap

	I had seen it before, but I forgot to mention it on my report. My
bad. Changing /bin/sh to /bin/bash fixed it like a charm. Anyway, the
scripts should (IMHO) be modified to take this into account, so no one gets
into the same problem.

	I'm going to post a bug on the BTS so the crawlers pick it and it's
available for online searches. I'll post more details there :-)

-- 
	Roberto Suarez Soto				Allenta Consulting
	robe@allenta.com				   www.allenta.com