[ceph-users] Migrate/convert replicated pool to EC?

David Turner drakonstein at gmail.com
Thu Oct 25 09:57:05 PDT 2018

There are no tools to migrate in either direction between EC and Replica.
You can't even migrate an EC pool to a new EC profile.

With RGW you can create a new data pool and new objects will be written to
the new pool. If your objects have a lifecycle, then eventually you'll be
to the new pool over time. Otherwise you can get there by rewriting all of
the objects manually.

On Thu, Oct 25, 2018, 12:30 PM Matthew Vernon <mv3 at sanger.ac.uk> wrote:

> Hi,
> I thought I'd seen that it was possible to migrate a replicated pool to
> being erasure-coded (but not the converse); but I'm failing to find
> anything that says _how_.
> Have I misremembered? Can you migrate a replicated pool to EC? (if so,
> how?)
> ...our use case is moving our S3 pool which is quite large, so if we can
> convert in-place that would be ideal...
> Thanks,
> Matthew
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