Re: [Qemu-devel] [RFC PATCH 0/4] Live block commit

[Tiziano Müller]

Hi Jeff

This is an awesome feature and absolutely necessary to get a working
live-snapshot/backup solution.

What is the status on this? Will it make it into 1.2.0?

Thanks in advance,
best regards,
Tiziano

Am Dienstag, den 31.07.2012, 01:16 -0400 schrieb Jeff Cody:
> These are proposed changes, to add live block commit functionality.
> 
> I originally had intended for this RFC series to include the more
> complicated case of a live commit of the active layer, but removed
> it for this commit in the hopes of making it into the soft feature
> freeze for 1.2, so this series is the simpler case.
> 
> This series adds the basic case, of a live commit between two
> images below the active layer, e.g.:
> 
> [base] <--- [snp-1] <--- [snp-2] <--- [snp-3] <--- [active]
> 
> can be collapsed down via commit, into:
> 
> [base] <--- [active]
> 
> or,
> 
> [base] <--- [snp-1] <--- [active],
> 
> [base] <--- [snp-3] <--- [active],
> 
> etc..
> 
> 
> qemu-io tests for the block commit will be adding onto the v1 patch
> set.
> 
> These patches are on top of Supriya's reopen() series, and Paolo's
> block mirror series (the RFC series).  I have not rebased yet to the
> newer patches put out by Supriya and Paolo - this was tested w/o the
> reopen, by manually making sure the images stayed in a r/w state.
> 
> 
> Jeff Cody (4):
>   block: add support functions for live commit, to find and delete
>     images.
>   block: add live block commit functionality
>   qerror: new errors for live block commit, QERR_TOP_NOT_FOUND
>   QAPI: add command for live block commit, 'block-commit'
> 
>  block.c             |  136 ++++++++++++++++++++++++++++++++++-
>  block.h             |    4 ++
>  block/Makefile.objs |    2 +-
>  block/commit.c      |  200 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>  block_int.h         |   19 +++++
>  blockdev.c          |   78 ++++++++++++++++++++
>  qapi-schema.json    |   33 +++++++++
>  qerror.c            |    4 ++
>  qerror.h            |    3 +
>  qmp-commands.hx     |    6 ++
>  trace-events        |    2 +
>  11 files changed, 485 insertions(+), 2 deletions(-)
>  create mode 100644 block/commit.c
> 

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