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Re: btrfs snapshots (of root file system)?

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From	Keith Bainbridge <keithrbau@gmail.com>
Newsgroups	linux.debian.user
Subject	Re: btrfs snapshots (of root file system)?
Date	Mon, 02 Oct 2023 11:40:01 +0200
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I use timeshift for this. It claims to use btrfs as an option. I've only
used rsync on extra, and that has saved my bacon a few times

All the best

Keith BAINBRIDGE

+61 (0)447 667 468
keithrbau@gmail.com

UTC + 10

>From my Apad

On Sun, 1 Oct 2023, 15:10 hw, <hw@adminart.net> wrote:

> Hi,
>
> with btrfs, how do I make a snapshot of the root file system?  The
> purpose is to update software and being able to go back to a previous
> state if necessary.
>
> There doesn't seem to be a command to create snapshots but only
> subvolumes?  How does a subvolume turn into a snapshot?  (The root
> file system is, of course, not on a subvolume.)
>
> How do I merge snapshots?  IIRC, when you remove a ZFS snapshot, the
> older state is merged to the state the snapshot is in.  Apparently
> btrfs can only delete snapshots --- and it seems like a bad idea to
> delete the root file system.  How would I boot from it when it's been
> deleted?
>
> Can I make a snapshot on a different volume?  The manpage doesn't say
> that the destination of a subvolume must be on the same volume, and in
> any case, I should be able to do that.
>
>

Thread

btrfs snapshots (of root file system)? hw <hw@adminart.net> - 2023-10-01 02:40 +0200
  Re: btrfs snapshots (of root file system)? debian-user@howorth.org.uk - 2023-10-01 12:00 +0200
    Re: btrfs snapshots (of root file system)? hw <hw@adminart.net> - 2023-10-01 21:30 +0200
  Fwd: btrfs snapshots (of root file system)? Keith Bainbridge <keithrbau@gmail.com> - 2023-10-02 11:40 +0200
  Re: btrfs snapshots (of root file system)? Keith Bainbridge <keithrbau@gmail.com> - 2023-10-02 11:40 +0200
  Re: btrfs snapshots (of root file system)? Anders Andersson <pipatron@gmail.com> - 2023-10-02 21:40 +0200
    Re: btrfs snapshots (of root file system)? hw <hw@adminart.net> - 2023-10-04 21:40 +0200

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