From: Hugo Mills <hugo-lkml@carfax.org.uk>
To: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: btrfs userspace question - where's the utility to dump/restore?
Date: Thu, 17 Jan 2013 22:18:19 +0000 [thread overview]
Message-ID: <20130117221819.GA5406@carfax.org.uk> (raw)
In-Reply-To: <6196.1358453135@turing-police.cc.vt.edu>
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On Thu, Jan 17, 2013 at 03:05:35PM -0500, Valdis Kletnieks wrote:
> So I'm looking at playing with btrfs, and I start looking at the
> userspace pieces I'll need. What I can't find is an equivalent
> of the ext[34] "dump/restore" package to dump data to an external
> backup device. Is 'tar cf --acls --selinux --xattrs /external/fs.dump'
> as good as it gets, or is something else recommended?
tar doesn't handle reflinks(+), so the above won't quite give you a
complete duplicate. In the btrfs tool, there's send/receive, which
should(*) be sufficient to deal with reflinks.
Hugo.
(+) aka CoW copies, or snapshots
(*) I regret to say that I've not had the opportunity to play with
send/receive myself yet, so I can't advise on the details of making it
work yet.
--
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next prev parent reply other threads:[~2013-01-17 22:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-17 20:05 Valdis Kletnieks
2013-01-17 22:18 ` Hugo Mills [this message]
2013-01-19 18:02 ` Valdis.Kletnieks
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