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[dm-devel] Re: [PATCH v3 00/12] snapshot-merge target



On Thu, Nov 19 2009 at  9:53am -0500,
Alasdair G Kergon <agk redhat com> wrote:

> On Thu, Nov 19, 2009 at 09:02:33AM -0500, Mike Snitzer wrote:
> > DM (and LVM) snapshot merging allows a snapshot (its COW store) to be
> > merged back into the snapshot's origin device.
> > One expected use of snapshot merging is rollback of a root filesystem
> > after system upgrades (e.g.: yum update).
> 
> Has the patch to 'Documentation/device-mapper' been written yet?
> (It won't go upstream until we have that of course.  Same for the
> replicator and any other new dm targets.)

Nope, I'll work on that (and adding comments like Andi suggested).  I'll
include these changes into the v4 snapshot-merge patchset submission
that I'll be getting out today.  The v4 patchset will be based on v9 of
the handover patch that we worked on (which I just emailed to dm-devel).

Mike


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