[LU-8846] lfs_migrate() should try to unlink volatile file

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Labels: lfs
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

lfs_migrate() bypasses llapi_create_volatile_idx() and creates a volatile file directly. (It does this because it needs to create the volatile file with a specific striping and llapi_create_volatile_idx() does not allow us to pass in striping.) It should do as llapi_create_volatile_idx() does and try to unlink the volatile file after opening it (in case volatile file creation is not supported).

Or we could add O_LOV_DELAY_CREATE to the open flags and use llapi_create_volatile_idx() but then we would need a function to apply the striping described by a struct llapi_stripe_param to an open file handle.

Issue Links

• is related to: LU-8559 sanity test_56xa: cannot swap layouts: Operation not permitted