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From: David Sterba <dsterba@suse.cz>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: dsterba@suse.cz, Forza <forza@tnonline.net>,
	linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Select DUP metadata by default on single devices.
Date: Mon, 20 Sep 2021 13:38:45 +0200	[thread overview]
Message-ID: <20210920113845.GH9286@twin.jikos.cz> (raw)
In-Reply-To: <a9b4ce46-27a2-377a-3c36-7706d71daf28@gmx.com>

On Mon, Sep 20, 2021 at 07:26:38PM +0800, Qu Wenruo wrote:
> 
> 
> On 2021/9/20 19:23, David Sterba wrote:
> > On Mon, Sep 20, 2021 at 06:46:31PM +0800, Qu Wenruo wrote:
> >>> - single by default for data on multiple devices (now it's raid0)
> >>
> >> Is there any discussion/thread on that part?
> >>
> >> As I'm not that aware about this.
> >
> > It's been discussed on IRC long time ago. The problem with raid0 is that
> > it's a striped profile and changing to another profile may be
> > problematic once all the chunk space is alloated. Unlike for single
> > where it's on just one device and converting to anything is easy.
> >
> > I think that for multi-device fs everybody specifies the profiles
> > manually anyway, but the defaults should be sane.
> 
> OK, that makes completely sense.
> 
> Then I have no concern for the switch so far.

Now tracked as

https://github.com/kdave/btrfs-progs/issues/406

  reply	other threads:[~2021-09-20 11:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-18 21:38 Select DUP metadata by default on single devices Forza
2021-09-18 23:58 ` Qu Wenruo
2021-09-20  3:32   ` Chris Murphy
2021-09-19 12:19 ` Su Yue
2021-09-20  9:09 ` David Sterba
2021-09-20 10:46   ` Qu Wenruo
2021-09-20 11:23     ` David Sterba
2021-09-20 11:26       ` Qu Wenruo
2021-09-20 11:38         ` David Sterba [this message]
2021-09-20 11:30     ` David Sterba
2021-09-20 11:12   ` Steven Davies
2021-09-20 11:32     ` David Sterba

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