Re: [PATCH] pg_upgrade: support for btrfs copy-on-write clones

Oskari Saarenmaa <os(at)ohmu(dot)fi> wrote:

> Add file cloning as an alternative data transfer method to pg_upgrade.

> Currently only btrfs is supported, but copy-on-write cloning is also
> available on at least ZFS.  Cloning must be requested explicitly and if
> it isn't supported by the operating system or filesystem a fatal error
> is thrown.
>
> This provides upgrade performance similar to link mode while allowing
> the old cluster to be used even after the new one has been started.

Please add the patch here to make sure it gets reviewed:

https://commitfest.postgresql.org/action/commitfest_view/open

For more information on the process, see:

http://wiki.postgresql.org/wiki/CommitFest

--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company