On Wed, Feb 21, 2018 at 4:00 PM, Peter Eisentraut <peter.eisentr...@2ndquadrant.com> wrote: > - XFS has (optional) reflink support. This file system is probably more > widely used than Btrfs. > > - Linux and glibc have a proper function to do this now. > > - APFS on macOS supports file cloning.
TIL that Solaris 11.4 (closed) ZFS supports reflink() too. Sadly, it's not in OpenZFS though I see numerous requests and discussions... (Of course you can just clone the whole filesystem and then pg_upgrade the clone in-place). -- Thomas Munro http://www.enterprisedb.com
