From: Roger Binns <rogerb@rogerbinns.com>
To: linux-btrfs@vger.kernel.org
Subject: data DUP
Date: Sat, 20 Apr 2013 13:17:06 -0700 [thread overview]
Message-ID: <kkut3u$lp1$1@ger.gmane.org> (raw)
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Is there any particular reason why I can't use DUP for data?
When I try to set it with balance there is a kernel message:
btrfs: dup for data is not allowed
The glossary at https://btrfs.wiki.kernel.org/index.php/Glossary says:
Regular data cannot be assigned DUP level.
It is somewhat baffling that code and documentation exists to prevent this!
My current use case is an older hard drive I am putting backups on. Since
my data fits in less than half of the drive, and drives get bad sectors
(this has had several it has reallocated) using DUP would be useful.
(I realise making two partitions and RAID-1 with them would work, which
makes the DUP restriction even sillier.)
Roger
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next reply other threads:[~2013-04-20 20:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-20 20:17 Roger Binns [this message]
2013-04-20 20:48 ` data DUP Hugo Mills
2013-04-20 21:15 ` Roger Binns
2013-04-20 21:23 ` Hugo Mills
2013-04-20 23:01 ` Roger Binns
2013-04-27 21:40 ` Calvin Walton
2013-04-27 23:29 ` Roger Binns
2013-04-28 2:53 ` Alex Elsayed
2013-04-28 8:29 ` Roger Binns
2013-04-22 13:37 ` David Sterba
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