Re: [Xen-devel] [PATCH v5 0/14] Migration Stream v2

[Hongyang Yang <yanghy@xxxxxxxxxxxxxx>]

Hi, Andrew,

On 06/12/2014 02:14 AM, Andrew Cooper wrote:
> Hello,
>
> Presented here for review is v5 of the Migration Stream v2 work.
>
> Major work in v5 is the legacy conversion python script which is capable of
> converting from legacy to v2 format on the fly.  It was tested using live
> migration saving in the legacy format, piping through the script and restoring
> using the v2 code.
>
> Other work includes a substantial refactoring of the code structure, allowing
> for a single generic save() and restore() functions, with function pointer
> hooks for each type of guest to implement.  The spec has been updated to
> include PV MSRs in the migration stream.
>
>
> This series depends on several prerequisite fixes which have recently been
> committed into staging (and have not passed the push gate at the time of
> writing).  The series also depends on the VM Generation ID series from David.
>
> I now consider the core of the v2 code stable.  I do not expect it to change
> much too much, other than the identified TODOs (and code review of course).
>
>
> The next area of work is the libxl integration, which will seek to undo the
> current layering violations.  It will involve introducing a new libxl framing
> format (which will happen to look curiously similar to the libxc framing
> format), as well as providing legacy compatibility using the legacy conversion
> scripts so migrations from older libxl/libxc toolstacks will continue to work.
What are your plans for libxl integration, do you have any design specs or is
it already implemented in the early stage?

> The code is presented here for comment/query/critism.
>
> ~Andrew
>
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> .
--
Thanks,
Yang.

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