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

[Andi Kleen]

> OK, I hadn't noticed because I was so focused on the details.
> 
> 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).

Thanks. Can you put that into the changelogs (at least for the main
feature) and into a overview comment somewhere in the code?

-Andi
-- 
ak at linux.intel.com -- Speaking for myself only.