Possible project idea

[Austin S Hemmelgarn <ahferroin7@gmail.com>]

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I'd been looking at the wiki page with project ideas, and I realized 
that there were no listed ideas that suggested the adding support for 
arbitrary erasure coding methods.  Ceph for example has an option that 
allows you to set arbitrary erasure coding such that you use n devices 
to store the data, and can tolerate loss of any m devices out of it.

Technically, this would be covered as a special case by the whole 
copies/stripes/parity thing that was discussed a while back before 
raid56 code made it into the kernel (I've tried to find the thread for 
reference, but haven't been unable to locate it), but I didn't see that 
'project' listed anywhere on the page either.

IMHO, this would be an excellent feature to differentiate BTRFS from 
bcachefs and ZFS (although I would not be surprised if they both copied 
it themselves).


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