Hi, I was recently informed of a situation that came up when an engineer added an SR-IOV nic to a compute node that was hosting some guests that had VFs attached. Unfortunately, adding the card shuffled the PCI addresses causing some degree of havoc. Basically, the PCI addresses associated with the previously allocated VFs were no longer valid.
I tend to consider this a non-issue. The expectation that hosts have relatively static hardware configuration (and kernel/driver configs for that matter) is the price you pay for having pets with direct hardware access. That being said, this did come as a surprise to some of those involved and I don't think we have any messaging around this or advice on how to deal with situations like this. So what should we do? I can't quite see altering OpenStack to deal with this situation (or even how that could work). Has anyone done any research into this problem, even if it is how to recover or extricate a guest that is no longer valid? It seems that at the very least we could use some stern warnings in the docs. Cheers, Brent
pgpTofx8v4Ts8.pgp
Description: PGP signature
__________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: [email protected]?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
