From: Gregory Farnum <gregory.farnum@dreamhost.com>
To: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Chuck Lever <chuck.lever@oracle.com>,
lsf-pc@lists.linux-foundation.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
linux-scsi@vger.kernel.org,
Sven Breuner <sven.breuner@itwm.fraunhofer.de>
Subject: Re: [LSF/MM TOPIC] end-to-end data and metadata corruption detection
Date: Tue, 31 Jan 2012 11:28:26 -0800 [thread overview]
Message-ID: <CAF3hT9AgVpcZkGLkr4EH4x4heNFgxNykM4Mp3V_C-RBSwJh7mA@mail.gmail.com> (raw)
In-Reply-To: <4F283F7A.4020905@itwm.fraunhofer.de>
On Tue, Jan 31, 2012 at 11:22 AM, Bernd Schubert
<bernd.schubert@itwm.fraunhofer.de> wrote:
> I guess we should talk to developers of other parallel file systems and see
> what they think about it. I think cephfs already uses data integrity
> provided by btrfs, although I'm not entirely sure and need to check the
> code. As I said before, Lustre does network checksums already and *might* be
> interested.
Actually, right now Ceph doesn't check btrfs' data integrity
information, but since Ceph doesn't have any data-at-rest integrity
verification it relies on btrfs if you want that. Integrating
integrity verification throughout the system is on our long-term to-do
list.
We too will be said if using a kernel-level integrity system requires
using DIO, although we could probably work out a way to do
"translation" between our own integrity checksums and the
btrfs-generated ones if we have to (thanks to replication).
-Greg
next prev parent reply other threads:[~2012-01-31 19:28 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-17 20:15 [LSF/MM TOPIC] end-to-end data and metadata corruption detection Chuck Lever
[not found] ` <38C050B3-2AAD-4767-9A25-02C33627E427-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2012-01-26 12:31 ` Bernd Schubert
[not found] ` <4F2147BA.6030607-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
2012-01-26 14:53 ` Martin K. Petersen
[not found] ` <yq1k44e1pn6.fsf-+q57XtR/GgMb6DWv4sQWN6xOck334EZe@public.gmane.org>
2012-01-26 16:27 ` Bernd Schubert
2012-01-26 23:21 ` James Bottomley
[not found] ` <1327620104.6151.23.camel-sFMDBYUN5F8GjUHQrlYNx2Wm91YjaHnnhRte9Li2A+AAvxtiuMwx3w@public.gmane.org>
2012-01-31 19:16 ` Bernd Schubert
2012-01-31 19:21 ` Chuck Lever
2012-01-31 20:04 ` Martin K. Petersen
2012-01-31 2:10 ` Martin K. Petersen
2012-01-31 19:22 ` Bernd Schubert
2012-01-31 19:28 ` Gregory Farnum [this message]
2012-02-01 16:45 ` [Lsf-pc] " Chris Mason
2012-02-01 16:52 ` James Bottomley
[not found] ` <1328115175.2768.11.camel-sFMDBYUN5F8GjUHQrlYNx2Wm91YjaHnnhRte9Li2A+AAvxtiuMwx3w@public.gmane.org>
2012-02-01 17:41 ` Chris Mason
2012-02-01 17:59 ` Bernd Schubert
2012-02-01 18:16 ` James Bottomley
2012-02-01 18:30 ` Andrea Arcangeli
2012-02-02 9:04 ` Bernd Schubert
2012-02-02 19:26 ` Andrea Arcangeli
[not found] ` <20120202192643.GC5873-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-02-02 19:46 ` Andreas Dilger
2012-02-02 22:52 ` Bernd Schubert
2012-02-01 18:15 ` Martin K. Petersen
[not found] ` <yq1d39ys9n1.fsf-+q57XtR/GgMb6DWv4sQWN6xOck334EZe@public.gmane.org>
2012-02-01 23:03 ` Boaz Harrosh
[not found] ` <DE0353DF-83EA-480E-9C42-1EE760D6EE41@dilger.ca>
2012-01-31 2:22 ` Martin K. Petersen
2012-01-26 15:36 ` Martin K. Petersen
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