Re: Filesystem snapshotting in dpkg (was Re: A 2025 NewYear present: make dpkg --force-unsafe-io the default?)

[Christian Kastner <ckk@debian.org>]

Hi,

I have not been monitoring this thread but this new Subject popped up,
and then something came to mind:

On 2024-12-28 15:21, Guillem Jover wrote:
> Port-specific or hardware specific optimizations might make sense in
> dpkg, but that depends on the type, semantics, testability and
> intrusiveness, among other things.
> 
> In this case (filesystem snapshotting), I do think dpkg is (currently at
> least) really the wrong place, for at least the following reasons:

I read somewhere that Fedora can do full rollbacks because the make use
of "ostree". See [1] for example. We have ostree in our Archive [2].

I'm not familiar with it yet, but had this bookmarked as something to
look into at some point.

Best,
Christian

[1]: https://docs.fedoraproject.org/en-US/fedora-silverblue/updates-upgrades-rollbacks/
[2]: https://packages.debian.org/sid/ostree