Is there other union fs that lowerdir is read-write and upperdir is for metadata cache

[Wang Yugui <wangyugui@xxxxxxxxxxxx>]

Hi,

Is there other union fs that
- lowerdir is read-write, not read-only
- upperdir is for metadata cache

so that we can merge multiple small filesystem to one bigger/faster fs?

Best Regards
Wang Yugui (wangyugui@xxxxxxxxxxxx)
2024/10/29