[LU-13031] store JobID of program that created file in inodes at create time

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0, Lustre 2.15.4
• Labels: LTS15 llnl lug23dd medium
• Assignee: Thomas Bertschinger
• Reporter: Andreas Dilger

Description

It would be useful to store the JobID that created a file in an xattr on the MDT inode. This would allow tracking the source of files after the fact, and can help users with the provenance of their file data (e.g. which run the files came from, which can then be used to determine runtime parameters used, whether the run was successful or not, etc.).

It isn't clear whether this would be needed on the OST inodes as well, but I think initially the MDT inode would be enough, as this would be the only xattr visible to users. The OST xattr would only be accessible for low-level scanning tools.

Issue Links

• duplicates: LU-11901 Store JobID of program that initially created file
• has to be done before: LU-16798 lfs find: new --jobid option
• is related to: LU-17219 lfs find: add ability to print extended attributes
• is related to: LU-15743 "lfs find" is missing "-xattr" support
• is related to: LU-16007 NRS Jobid default RPC aggregation
• is related to: LU-17648 store JobID of process deleting file into xattr
• is related to: LUDOC-373 Add information about Lustre xattrs