[LU-397] lustre 2.0 client can not mount to lustre 2.1 server

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.1.0
• Affects Version/s: Lustre 2.0.0
• Severity: 3
• Assignee: nasf (Inactive)
• Reporter: nasf (Inactive)

Description

The commit 06a67987e06f7fa9c0bfde549d54e2bed0a78ade introduced server identifier into lu_seq_range to distinguish between MDT and OST fids. But for old 2.0 client, it did not specify such identifier/flags, then caused 'fld_server_lookup()' failure.