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Re: [Xen-devel] [PATCH] External device migration support

Stefan Berger wrote:

This patch enables external devices, such as for example a mounted hard
drive image or a TPM, to be migrated to a remote machine. The patch
hooks into the checkpointing (XendCheckpoint.py) code and performs
migration in 4 different steps:
Please let me know what you think about this idea.

I really like the idea because it seems to work for any external device that can be migrated but does not allow concurrent access from both migration source and destination.

I have not looked at the patch in detail, but I saw the specific inclusion of
+# The tool used for initiating virtual TPM migration
+#(vtpm-migration-tool '')

Could this migration tool specification be more generalized so that any device migration can be configured, not just vtpm devices?

Best Regards,
Michael Paesold

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