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[Gluster-devel] bit rot support for glusterfs
From: |
shishir gowda |
Subject: |
[Gluster-devel] bit rot support for glusterfs |
Date: |
Tue, 24 Dec 2013 13:05:08 +0530 |
Hi All,
I will be starting to work on bit rot detection for glusterfs.
This work will be primarily based on Doug Willam's prototype
(https://github.com/williamsdoug/glusterfs_bitrot_proto).
The existing design can be found @
http://gluster.org/community/documentation/index.php/Arch/BitRot_Detection#Current_Prototype
Few design updates:
1. Depend on change-log to recompute checksum. This eliminates
periodic crawl of brick/volume to update the checksum.
2. Policy to determine when checksum to recomputed. If a file is under
going active I/O, then compute checksum only after a delay
3. Ability to turn off/on bit rot detection in volumes.
4. If bit rot is turned on for a volume, a crawl would be necessary in
this case to compute checksum.
This just a initial draft, and will update the design doc, and the thread soon.
Please feel free to comment.
With regards,
Shishir
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