> On 9 Oct 2024, at 10:04, Zbigniew Jędrzejewski-Szmek <zbys...@in.waw.pl> 
> wrote:
> 
> On Tue, Oct 08, 2024 at 06:14:29PM +0100, Barry Scott wrote:
>>> On 4 Oct 2024, at 16:05, Zbigniew Jędrzejewski-Szmek <zbys...@in.waw.pl> 
>>> wrote:
>>> 
>>> Hi folks,
>>> 
>>> I was recently doing a bunch of test reinstalls of Fedora [1],
>>> looking to see if it's complicated to retain the user directories
>>> during a reinstall. The answer is, sadly, that it's possible only with
>>> some manual tinkering. This is a known problem [2].
>>> 
>>> With a little bit of trickery, Anaconda will let the "home" subvolume
>>> be and install the system to a new "root" subvolume, so user data is
>>> preserved. But then after a reboot a new user will be created, because
>>> the old user is not hooked up into /etc/passwd.
>>> 
>>> We actually have a partial solution for this: systemd-homed.
>>> With systemd-homed the information about the user is maintained in the
>>> user directory/subvolume/partition, e.g. /home/username.homedir.
>>> After a reinstall, ideally nothing needs to be done and the user
>>> account is ready to be used.
>> 
>> I like the idea of being able to reinstall and keep the /home.
>> But I'd rather not use systemd-homed to get the feature.
>> I already have full-disk-encryption for security.
>> 
>> What about having the necessary meta data in a per user file in /home
>> and read that when doing the reinstall?
>> 
>> I would have /home/barry and /home/barry.metadata for example.
> 
> What you describe is pretty much the proposal you were replying to,
> just with different paths. You'd have (unencrypted)
> /home/barry.homedir/ and /home/barry.homedir/.identity and
> systemd-homed would create /home/barry/ with a bind mount.

> You mention FDE, but the proposal was explicitly about homed homes
> without encryption at the homed level. This kind of setup is often
> used with FDE.

I'll search for the docs on this style of use. Thanks for the heads up.

Barry


> 
> Zbyszek
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