From: Christoph Anton Mitterer <calestyo@scientia.net>
To: Mitchell Fossen <msfossen@gmail.com>, linux-btrfs@vger.kernel.org
Subject: Re: RAID1 vs RAID10 and best way to set up 6 disks
Date: Fri, 03 Jun 2016 20:59:33 +0200 [thread overview]
Message-ID: <1464980373.6679.28.camel@scientia.net> (raw)
In-Reply-To: <1464979359.1571.25.camel@gmail.com>
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On Fri, 2016-06-03 at 13:42 -0500, Mitchell Fossen wrote:
> Thanks for pointing that out, so if I'm thinking correctly, with
> RAID1
> it's just that there is a copy of the data somewhere on some other
> drive.
>
> With RAID10, there's still only 1 other copy, but the entire
> "original"
> disk is mirrored to another one, right?
To be honest, I couldn't tell you for sure :-/ ... IMHO the btrfs
documentation has some "issues".
mkfs.btrfs(8) says: 2 copies for RAID10, so I'd assume it's just the
striped version of what btrfs - for whichever questionable reason -
calls "RAID1".
Especially, when you have an odd number devices (or devices with
different sizes), its not clear to me, personally, at all how far that
redundancy actually goes respectively what btrfs actually does... could
be that you have your 2 copies, but maybe on the same device then?
Cheers,
Chris.
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next prev parent reply other threads:[~2016-06-03 18:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-03 18:10 RAID1 vs RAID10 and best way to set up 6 disks Mitchell Fossen
2016-06-03 18:13 ` Christoph Anton Mitterer
2016-06-03 18:42 ` Mitchell Fossen
2016-06-03 18:59 ` Christoph Anton Mitterer [this message]
2016-06-05 0:41 ` Brendan Hide
2016-06-05 1:10 ` Christoph Anton Mitterer
2016-06-05 15:36 ` Chris Murphy
2016-06-05 20:31 ` Christoph Anton Mitterer
2016-06-05 23:35 ` Chris Murphy
2016-06-06 11:54 ` Austin S. Hemmelgarn
2016-06-03 19:57 ` Justin Brown
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