https://bugs.kde.org/show_bug.cgi?id=438434

--- Comment #20 from [email protected] ---
(In reply to Martin Steigerwald from comment #19)
> There is a huge discussion following this. I do not have the time to review
> it right now, however there might be something in it in order to make Baloo
> work for these use cases.
Many thanks for keeping watch on the topic and there is indeed a lot to read
through.

Do you think this:

https://lore.kernel.org/linux-btrfs/[email protected]/

could imply that the major:minor device numbers, as seen by stat (and baloo),
start relating to the subvol? cf:

    There are long-standing problems with btrfs subvols, particularly in
    relation to whether and how they are exposed in the mount table.

     - /proc/self/mountinfo reports the major:minor device number for each
        filesystem and when a btrfs subvol is explicitly mounted, the number
        reported is wrong - it does not match what stat() reports for the
        mountpoint.

But there does seem to be a wide range of options put forward and it's not
really clear what the front runner is.

For me, name_to_handle_at() returns a 20 byte handle. Having such an invariant
is good, but it is big...

Thanks again...

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