From: Russell Coker <russell@coker.com.au>
To: Marc MERLIN <marc@merlins.org>, linux-btrfs@vger.kernel.org
Subject: Re: historical backups with hardlinks vs cp --reflink vs snapshots
Date: Thu, 22 May 2014 14:24:53 +1000 [thread overview]
Message-ID: <1668691.Jr8NPxkTPc@xev> (raw)
In-Reply-To: <20140521035928.GW10656@merlins.org>
On Tue, 20 May 2014 20:59:28 Marc MERLIN wrote:
> just wrote a blog post about the 3 way of doing historical snapshots:
> http://marc.merlins.org/perso/btrfs/post_2014-05-20_Historical-Snapshots-Wit
> h-Btrfs.html
> I love reflink, but that forces me to use btrfs send as the only way to
> copy a filesystem without losing the reflink relationship, and I have no
> good way from user space to see the blocks shared to see how many are
> shared or whether some just got duped in a copy.
> As a result, for now I still use hardlinks.
It would be nice if someone patched rsync to look for files with identical
contents and use reflink or hardlinks (optionally at user request) instead of
making multiple copies of the same data. Also it would be nice if rsync would
look for matching blocks in different files to save transfer.
--
My Main Blog http://etbe.coker.com.au/
My Documents Blog http://doc.coker.com.au/
prev parent reply other threads:[~2014-05-22 4:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-12 12:27 send/receive and bedup Scott Middleton
2014-05-14 13:20 ` Duncan
2014-05-14 15:36 ` Scott Middleton
2014-05-19 1:07 ` Marc MERLIN
2014-05-19 13:00 ` Scott Middleton
2014-05-19 16:01 ` Brendan Hide
2014-05-19 17:12 ` Konstantinos Skarlatos
2014-05-19 17:55 ` Mark Fasheh
2014-05-19 17:59 ` Austin S Hemmelgarn
2014-05-19 18:27 ` Mark Fasheh
2014-05-19 17:38 ` Mark Fasheh
2014-05-19 22:07 ` Konstantinos Skarlatos
2014-05-20 11:12 ` Scott Middleton
2014-05-20 22:37 ` Mark Fasheh
2014-05-20 22:56 ` Konstantinos Skarlatos
2014-05-21 0:58 ` Chris Murphy
2014-05-23 15:48 ` Konstantinos Skarlatos
2014-05-23 16:24 ` Chris Murphy
2014-05-21 3:59 ` historical backups with hardlinks vs cp --reflink vs snapshots Marc MERLIN
2014-05-22 4:24 ` Russell Coker [this message]
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