Comment #4 on issue 376 by [email protected]: Rename instance without shutdown
http://code.google.com/p/ganeti/issues/detail?id=376

The name of an instance is used in multiple places, and in particular, in XEN configuration. It's used to name XEN configuration files as well as inside these files. Renaming an offline instance is fine, because the configuration files are constructed on instance start. But a running XEN instance's configuration apparently can't be changed without stopping and restarting it again (see also http://serverfault.com/q/483734/).

A possible solution would be to change our usage of hypervisors so that we use UUIDs instead of instance names in their configuration, making the configuration more robust.

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