[LSF/MM TOPIC] end-to-end data and metadata corruption detection

Hi-

I know there is some work on ext4 regarding metadata corruption detection; btrfs also has some corruption detection facilities.  The IETF NFS working group is considering the addition of corruption detection to the next NFSv4 minor version.  T10 has introduced DIF/DIX.

I'm probably ignorant of the current state of implementation in Linux, but I'm interested in understanding common ground among local file systems, block storage, and network file systems.  Example questions include:  Do we need standardized APIs for block device corruption detection?  How much of T10 DIF/DIX should NFS support?  What are the drivers for this feature (broad use cases)?

-- 
Chuck Lever
chuck[dot]lever[at]oracle[dot]com




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