Re: Moving all s3 objects from an ec pool to a replicated pool using storage classes.

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This probably doesn’t solve your overall immediate problem, but these PRs that should be in Quincy enable Lua scripting to override any user-supplied storage class on upload.  This is useful in contexts where user / client behavior is difficult to enforce but the operator wishes to direct objects at upload to specific storage classes.  One example would be to shunt large objects to a cost-effective QLC EC pool, while smaller default to a faster replicated TLC pool.

https://github.com/ceph/ceph/pull/43529
https://github.com/ceph/ceph/pull/43626

This may be useful in conjunction with other techniques discussed in this thread.

> 
> And even after modifying s3cmd code to avoid sending x-amz-storage-class:STANDARD,
> 
> the default_storage_class from the user info was still ignored.
> 
> So basically you need all your clients to set the correct new storage class for new PUT's.

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