On 2023/9/4 23:03, Amir Goldstein wrote:
On Mon, Sep 4, 2023 at 5:38 PM Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx> wrote:
..
Let me put it this way:
If there was an official offline tool to merge overlayfs layers
I would expect that tool to mark the offline merged directories
with an empty "trusted.overlayfs.origin", to be able to distinguish
them from pure non-merge directories.
I do not consider dealing with this in erofs-utils side a workaround
I consider it crafting layers in expected overlayfs format.
Thanks for the hints.
Ok, marking impure makes sense as long as it's properly described.
Just tried to describe the background since the question I think
is not quite erofs-utils specific, btw, if there could be some
reference official offline tool, that would be great!
There is this tool from kmxz that supports offline merge:
https://github.com/kmxz/overlayfs-tools
but it is not in any way "official".
I have contributed redirect and metacopy support in 2020
and there hasn't been much traffic since.
This tool does not deal with origin and impure xattrs.
Thanks, very useful link! will also check this later.
Thanks,
Amir.
