[LU-7661] MGS_SET_INFO handler is too permissive

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.8.0
• Labels: mgs
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

The handler for MGS_SET_INFO is needed only for the hack where setting the default striping on the root directory sets the default striping of the FS. It only needs to handle '*.lov.stripe{count,size,offset}=*'. So we should only allow those params to be set.

Issue Links

• is related to: LU-8454 non-root user is able to change stripe size for mount point
• is related to: LU-7660 FS default striping settings only honored on MDT 0
• is related to: LU-3289 IU Shared Secret Key authentication and encryption