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Andrew Pollock


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Tuesday, 01 November 2005

The quest for IPMI LAN access over down interfaces continues

Today I upgraded daedalus to 2.6.14. I had to backport yaird to stable, which wasn't a big deal. It's available here if you're interested. The kernel package for 2.6.14 from unstable worked fine otherwise.

I had two motivations behind upgrading - inotify and another look to see if the situation with IPMI had changed.

Well inotify just works, and is the bomb. I'm going to have lots of fun with it.

IPMI, on the other hand is still broken, which makes me sad. As I've previously pointed out by way of example, LAN access to the base-board management controller via IPMI is impossible after Linux shuts down the interface. It's supposed to work, but the way Linux does it seems to stop it from working.

I'd read that the problem was resolved in 2.6.12, and so dutifully tested it out on daedalus to my detriment. I also tested it on 2.6.14, but again, had the same problem (I remembered to schedule a deferred reboot this time).

So IPMI with a box running Linux is all good as long as the box is actually running. I suspect if the box panicked and/or hung itself, it'd also be useful for rebooting it, but if you shut the box down and remove power, IPMI won't allow you to turn it back on again.

[16:01] [tech] [permalink]