From: Johannes Hirte <johannes.hirte@datenkhaos.de>
To: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
Cc: Justin Engwer <justin@mautobu.com>, linux-btrfs@vger.kernel.org
Subject: Re: I think he's dead, Jim
Date: Wed, 20 May 2020 22:53:19 +0200 [thread overview]
Message-ID: <20200520205319.GA26435@latitude> (raw)
In-Reply-To: <20200520013255.GD10769@hungrycats.org>
On 2020 Mai 19, Zygo Blaxell wrote:
>
> Corollary: Never use space_cache=v1 with raid5 or raid6 data.
> space_cache=v1 puts some metadata (free space cache) in data block
> groups, so it violates the "never use raid5 or raid6 for metadata" rule.
> space_cache=v2 eliminates this problem by storing the free space tree
> in metadata block groups.
>
This should not be a real problem, as the space-cache can be discarded
and rebuild anytime. Or do I miss something?
--
Regards,
Johannes Hirte
next prev parent reply other threads:[~2020-05-20 21:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 20:51 I think he's dead, Jim Justin Engwer
2020-05-18 23:23 ` Chris Murphy
[not found] ` <CAGAeKuv3y=rHvRsq6SVSQ+NadyUaFES94PpFu1zD74cO3B_eLA@mail.gmail.com>
[not found] ` <CAJCQCtQXR+x4mG+jT34nhkE69sP94yio-97MLmd_ugKS+m96DQ@mail.gmail.com>
2020-05-19 18:45 ` Justin Engwer
2020-05-19 20:44 ` Chris Murphy
2020-05-20 1:32 ` Zygo Blaxell
2020-05-20 20:53 ` Johannes Hirte [this message]
2020-05-20 21:35 ` Chris Murphy
2020-05-20 22:15 ` Johannes Hirte
2020-05-21 6:20 ` Zygo Blaxell
2020-05-21 17:24 ` Justin Engwer
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=20200520205319.GA26435@latitude \
--to=johannes.hirte@datenkhaos.de \
--cc=ce3g8jdj@umail.furryterror.org \
--cc=justin@mautobu.com \
--cc=linux-btrfs@vger.kernel.org \
/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.