[LU-6866] MDT file migration is incompatible with HSM

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.8.0
• Labels: HSM migration
• Severity: 3
• Assignee: WC Triage
• Reporter: John Hammond

Description

Migrating a file between MDTs changes the FID of the file. The file FID is the used to identify the file in the HSM archive (unfortunately). So, for example, if a released file is migrated from one MDT to another then it cannot be restored.

Issue Links

• is related to: LU-7207 HSM: Add Archive UUID to delete changelog records
• is related to: LU-7586 sanity-hsm test_406: "cannot complete migration after HSM remove"
• is related to: LU-7607 Preserve inode number after MDT migration
• is related to: LU-2430 Migration tool for DNE
• is related to: LU-6868 MDT migration does not generate changelog records