From: Geoff Seeley <gseeley@gmail.com>
To: pve-user@lists.proxmox.com
Subject: Re: [PVE-User] PBS and ZFS Pools Compression?
Date: Thu, 8 Apr 2021 09:22:44 -0700 [thread overview]
Message-ID: <CAF3x0qAmG6AY7PEEehy2j9hNkfRGmPNGmeQGLGRzUNUPZ6RZ=g@mail.gmail.com> (raw)
In-Reply-To: <mailman.181.1617896884.359.pve-user@lists.proxmox.com>
>
> > I may be wrong, but AFAIK ZFS detects compressed data and thus it is not
> > doing double-compression in such cases,
>
> AFAIK the only way to detect compressed data is to actually compress it,
> then
> test the size. So this is double-compression ...
>
ZFS compression is a little more complex than this, but the good news is
that ZFS is also smart enough not to do this!
This is a good article on the subject:
https://klarasystems.com/articles/openzfs1-understanding-transparent-compression/
TL;DR: Enable compression at the pool level and forget about it.
-Geoff
next parent reply other threads:[~2021-04-08 16:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.181.1617896884.359.pve-user@lists.proxmox.com>
2021-04-08 16:22 ` Geoff Seeley [this message]
2021-04-08 18:06 Dietmar Maurer
2021-04-08 23:51 ` Roland
2021-04-09 6:54 ` Fabian Grünbichler
-- strict thread matches above, loose matches on Subject: below --
2021-04-08 15:47 Dietmar Maurer
2021-04-08 13:06 Lindsay Mathieson
2021-04-08 13:12 ` Roland
2021-04-08 13:13 ` Lindsay Mathieson
2021-04-08 15:19 ` Mikhail
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAF3x0qAmG6AY7PEEehy2j9hNkfRGmPNGmeQGLGRzUNUPZ6RZ=g@mail.gmail.com' \
--to=gseeley@gmail.com \
--cc=pve-user@lists.proxmox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox