Superblock backup

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Hi,

again, following the RAID-5 story, I was wondering
if could make sense to have a new superblock type,
let's say 2.x, having backup copies (of persistent
or quasi persistent data) in different areas of the
drive components.
This would be similar to filesystem or gpt.

Is there anything planned for this?

In any case, it would be still interesting to have
a "backup" capability at hand, like a "dd" of the
superblock to some secure file.

Any idea or suggestions?

Thanks,

bye,

-- 

piergiorgio
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