| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: file cloning in pg_upgrade and CREATE DATABASE |
| Date: | 2018-07-13 05:09:29 |
| Message-ID: | CAEepm=37B7N_=jvh9TBP=h6eeGMQFaB3YAw-Ov9p7S1sNv_Z=w@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Feb 21, 2018 at 4:00 PM, Peter Eisentraut
<peter(dot)eisentraut(at)2ndquadrant(dot)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
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