[Gluster-devel] BitRot notes

[Nagaprasad Sathyanarayana]

Interesting use case. Can AFR also use bit rot detection and heal from a good copy (if possible)?

Thanks
Naga


> On 06-Nov-2014, at 8:48 pm, Alok Srivastava <asrivast at redhat.com> wrote:
> 
> Thanks Venky for sharing the details.
> I have included Pranith and Atin for a specific question:
> 
> With current implementation of erasure coding, Do we  have the capability of detecting and correcting bit rot? 
> 
> Let's say we have fragments of a file on multiple bricks and a read request is sent to the bricks, a brick  doesn't respond as it may have disk(s) damaged by bit rot or any other failure. Will EC detect and correct bit rot in this case? 
> 
> Regards
> Alok
> 
> 
> ----- Original Message -----
> From: "Venky Shankar" <vshankar at redhat.com>
> To: gluster-devel at gluster.org
> Cc: "Vijay Bellur" <vbellur at redhat.com>, "Ric Wheeler" <rwheeler at redhat.com>, "Alok Srivastava" <asrivast at redhat.com>, "Raghavendra Bhat" <rabhat at redhat.com>
> Sent: Friday, October 31, 2014 4:09:03 PM
> Subject: BitRot notes
> 
> Hey folks,
> 
> Myself and Raghavendra (@rabhat) have been discussing about BitRot[1] 
> and came up with a list of high level tasks (breakup items) captured 
> here[2]. The pad will be updated on an ongoing basis reflecting the 
> current status/items that are being worked on. As always, contributions 
> in any form (design, code, doc, etc..) are more than welcome (just make 
> sure you're heard on the pad/email :))
> 
> [1]: 
> http://www.gluster.org/community/documentation/index.php/Features/BitRot
> [2]: https://public.pad.fsfe.org/p/glusterfs-bitrot-notes
> 
> Thanks,
> venky
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>