[LU-3867] filename_is_volatile() uses strtoul(..., ..., 0) to parse MDT index

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.6.0
• Affects Version/s: Lustre 2.5.0
• Labels: dne
• Severity: 3
• Assignee: James Nunez (Inactive)
• Reporter: John Hammond

Description

If llapi_create_volatile_idx() is passed an MDT index other than -1 then it uses '%.4X' to encode the index into the volatile file name. But it uses an index of 0 rather than the one provided.

filename_is_volatile() uses strtoul(..., ..., 0) to parse the MDT index out of the volatile file name.

So llapi_create_volatile_idx() ignores MDT index when specified and filename_is_volatile() doesn't properly understand MDT indices greater than 9.