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[Xen-devel] Discussion: Add API to retrieve migration progress

Hi, list,

One customer requests that we should show migration progress bar in 'xl migrate' or 'virsh migrate', like '-h/--hash' option in 'rpm' command, so that they could see clearly what happened in migration period. To deal with that, we need to have a method to retrieve migration progress. And we hope such stuff could be finally merged to upstream. How do you think?

Besides, currently, there is some debug messages about the transferred pages and remaining dirty pages in libxc xc_domain_save, but that could not be reported to upper layer. We may need a libxl API, which could save the migration status (that could be libxc passed to libxl through pipe or other way); and may need an asyncprogress callback to handle the async thing. Do you have any prefers about how it will be like?


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