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Re: [Qemu-devel] [RFC PATCH 0/4] Live block commit
From: |
Tiziano Müller |
Subject: |
Re: [Qemu-devel] [RFC PATCH 0/4] Live block commit |
Date: |
Tue, 14 Aug 2012 09:41:30 +0200 |
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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- Re: [Qemu-devel] [RFC PATCH 0/4] Live block commit,
Tiziano Müller <=