Re: [Xen-users] Xen not restarting after power interruption

["Niels Dettenbach (Syndicat IT&Internet)" <nd@xxxxxxxxxxxx>]

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richardsambell <richard.sambell@xxxxxxxxxxxxxxxxxxxxx> schrieb:

>vmlinuz-2.6.11.
> xen-2.0.6
Uhaa!
This seems *very* old and outdated from a security view and other things. Hope 
your machine is not running on public networks - but if you talk about 
"firewalling" i assume it is at least exposed to potentially insecure networks. 
So this might be urgent.

>From this point it could make sense to backup / copy over your DomUs and 
>update or reinstall (as att gentoo and xen was very "new" and usually 
>configured "by hand" i would prefer to do a reinstall) your Gentoo / Xen to a 
>current version of Xen and kernel. Then copy back your DomUs and start it.

You may have to check the network configuration before proceeding (if possible) 
or copy old /etc/confid/net and /etc/xen for your reference what was happen. 
Gentoo has changed network configuration syntax slightly (see 
/etc/conf.d/net.example) and xen has changed some default names in the network 
devices / bridge config. See changes on xen wiki for upgrading notes if 
required.

Setting up Xen with Gentoo is much more easy today as att of 2.0 and there are 
some helpful HOWTOs out i.e. in several wikis.

>tried 'xend start' from root and got:
>
>---
>Traceback (most recent call last):
> File "/usr/sbin/xend", line 27, in ?
> from xen.xend.server import SrvDaemon
> File "/usr/lib/python/xen/xend/server/SrvDaemon.py", line 35, in ?
> from xen.xend.server import SrvServer
> File "/usr/lib/python/xen/xend/server/SrvServer.py", line 28, in ?
> from twisted.web import server, static
> ImportError: No module named web
> ---
>
>"ImportError: No module named web" - so where did it suddenly go? or is
>this
>masking some other issue?

Hmm,
if you or the host really did no other thing (i.e. some update automatics) in 
between then ungraceful restart it might be that one or several files was 
"gonge" during a filesystem repair after the hard shutdown.

Try to find if "web" is there somewhere in the filesystem or if it could be 
loaded from your xens python. If not you can try to find copies from that files 
to replace it into your system.

hth
best regards,


Niels.
- --
Niels Dettenbach
Syndicat IT&Internet
http://www.syndicat.com
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