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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.