[CentOS] 5.2-5.3 Xen upgrade weirdness

Timo Schoeler timo.schoeler at riscworks.net
Wed Apr 1 14:15:12 UTC 2009


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thus Tom Diehl spake:
| Hi,
|
| Has anyone tried upgrading xen domu's from 5.2 to 5.3? I just did a
| yum upgrade glibc & yum upgrade yum. All appeared to go well but when I
| rebooted and tried to connect to the network, I could not. Looking at
| /etc/sysconfig/network-scripts I see that the that there is now an
ifcfg-eth0
| and an ifcfg-eth0.bak. ifcfg-eth0 now contains configuration for a
dynamically
| configured interface and ifcfg-eth0.bak has the old static config
information.
|
| In addition, the mac address of the interface has also been changed. I
can put
| everything back but I would like to know if this behavior is
deliberate? If so
| how do I revert whatever is making the changes so that this does not
happen.
| I have software on some of my domu's that requires me to go get new
license
| keys when mac addresses or ip addresses change.
|
| So far in my limited testing this only seems to happen on the domu.
The dom0
| seems to be OK, although I have not yet rebooted it.
|
| I did not see anything in the release notes.
|
| Regards,

Hi Tom,

you can nail the MAC addresses of the domU's in /etc/xen/auto/config-file:

http://wiki.xensource.com/xenwiki/XenNetworking#head-d5446face7e308f577e5aee1c72cf9d156903722

(see 'Additional Notes', also). If not set here, they will change every
reboot (create, destroy) of domU.

HTH,

Timo
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