Comment 21 for bug 1548450
Revision history for this message
| Dan Smith (danms) wrote Re: Host data leak during resize/migrate for raw-backed instances | #21 |
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1b1ed1a
(Get the code!)
I'm good with the live migrate case of this. Obviously this code all needs to be cleaned up and unified, but...
Talking to Lee in the back channel, it sounds like the cold case might be copying the file over top of itself if we're on shared storage, which would be a bad idea. So I think he needs to make a change to fix that.
In general, I hate the idea of copying this file between the compute nodes because it becomes an issue for us potentially evolving the content/format of that file, and then copying a new-format file to an older compute node which can't understand it. However, I think we probably already have that case if we're on shared storage, where the file lives in a shared-by-both location. That's a time bomb waiting to go off, but we'll just have to deal with it when it happens I guess.