Amir Goldstein cbb44f0935 ovl: auto generate uuid for new overlay filesystems
Add a new mount option uuid=auto, which is the default.

If a persistent UUID xattr is found it is used.

Otherwise, an existing ovelrayfs with copied up subdirs in upper dir
that was never mounted with uuid=on retains the null UUID.

A new overlayfs with no copied up subdirs, generates the persistent UUID
on first mount.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
2023-08-12 19:02:50 +03:00
..
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2023-03-27 16:59:17 +04:00
2020-07-09 08:14:01 +02:00
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