[LU-13593] Fix growing message buffer

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Affects Version/s: Lustre 2.14.0
• Labels: patch
• Severity: 3
• Assignee: Sebastien Buisson
• Reporter: Sebastien Buisson

Description

lustre_grow_msg_v2() should move memory region even if new size for buffer has already been set. The use case is when it is called via mdt_dom_read_on_open() and req_capsule_server_grow() in order to put DoM file content into RMF_NIOBUF_INLINE field (RQF_LDLM_INTENT_OPEN request with ldlm_intent_open_server format for server part). Indeed, there is another field RMF_FILE_SECCTX (and soon another one for encryption context support) after RMF_NIOBUF_INLINE.

To achieve this, I will push a patch that adds an 'oldlen' parameter.

Issue Links

• is related to: LU-12443 sanity test_271f: @@@@@@ FAIL: expect 1 READ RPC, occured