rados cppool slooooooowness

[Simon Murray <simon.murray@xxxxxxxxxxxxxxxxx>]

Morning guys,

I've got about 8 million objects sat in .rgw.buckets that wants moving out of the way of OpenStack RDB traffic onto its own (admittedly small) cold storage pool on separate OSDs.

I attempted to do this over the weekend during a 12h scheduled downtime, however my estimates had this pool completing in a rather un-customer friendly (think no backups...) 7 days.

Anyone had any experience in doing this quicker?  Any obvious reasons why I can't hack do_copy_pool() to spawn a bunch of threads and bang this off in a few hours?

Cheers

Si

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