On Fri, Dec 2, 2016 at 3:05 PM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:
> On Fri, Dec 2, 2016 at 10:30 AM, Amir Goldstein <amir73il@xxxxxxxxx> wrote:
>> Hi Miklos,
>>
>> Wanted to give you a heads up on upcoming announcement for
>> overlayfs snapshots POC, just to give you a sense of what's been
>> driving my recent overlayfs development efforts
>> and also because I am eager to share the news ;-).
>
> Okay, so this is sort of reverse-overlay. For this to be useful,
> however, there would have to be a way to make the snapshot *after*
> /mnt is mounted, no?
Okay, so doing multiple snapshots on the fly would work something like this:
- there are SNAP{1..N} and a MASTER branch
- view of snapshot(i) is an overlay of (from bottom up) MASTER;
SNAP{N}; ...; SNAP{i}
Modification of master would always go to the latest snapshot branch (SNAP{N}).
The big change to overlayfs is to allow splitting the bottom layer.
Thanks,
Miklos
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