[LU-14405] 'lfs fid2path' failed with -ERANGE if directory has 8 stripes

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: Lai Siyao
• Reporter: Lai Siyao

Description

mdt_path_current() uses mdt_thread_info.mti_xattr_buf to read LMV, whose size is static and can't hold LMV with 8 stripes. Instead, it should use the standard mdt_stripe_get() to read LMV which allocates dynamic memory to hold LMV.