From: Zach Brown <zab@zabbo.net>
To: David Chinner <dgc@sgi.com>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: bdar: efficiently backup allocated bytes in file systems
Date: Tue, 18 Mar 2008 15:06:27 -0700 [thread overview]
Message-ID: <47E03CE3.3080903@zabbo.net> (raw)
In-Reply-To: <20080318213543.GC155407@sgi.com>
> Neat, Zach. You should look at xfs_copy - it does pretty much this for XFS
> filesystems....
haha, yet another round of the -fsdevel XFS drinking game :)
Does xfs_copy tend to assert the XFS file format in the backup files it
generates? One of the things I was hoping for with bdar was to have the
resulting copy image be agnostic. It's just a sparse map with some
checksumming, really.
That limits what we can do, of course. The current trivial format only
has one address space which doesn't fit well with the plans file systems
have of working with multiple addressable block ranges.
But I think I'm fine with that. The value:complexity ratio of this
trivial version is refreshingly large.
- z
next prev parent reply other threads:[~2008-03-19 19:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-18 1:13 bdar: efficiently backup allocated bytes in file systems Zach Brown
2008-03-18 7:47 ` Sitsofe Wheeler
2008-03-20 16:25 ` Zach Brown
2008-03-18 21:35 ` David Chinner
2008-03-18 22:06 ` Zach Brown [this message]
2008-03-18 23:52 ` David Chinner
2008-03-20 0:26 ` Szabolcs Szakacsits
2008-03-20 1:13 ` Andreas Dilger
2008-03-20 0:32 ` Ric Wheeler
2008-03-19 2:58 ` Andreas Dilger
2008-03-19 3:10 ` Zach Brown
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