[LU-3467] Unified request handler on OST

• Type: Technical task
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.6.0
• Affects Version/s: Lustre 2.5.0
• Assignee: Mikhail Pershin
• Reporter: Andreas Dilger

Description

This ticket is to change the OST to use the unified request handler and be able to handle the OUT update requests from the MDS. This is needed for LFSCK, and will also be needed for the DAOS access to the OST.

Issue Links

• is related to: LU-4327 tgt_ses_info()) ASSERTION( env->le_ses != ((void *)0) ) failed
• is related to: LU-4384 Hit unsupported incompat filesystem feature error after downgrade system from 2.6 to 2.5.0
• is related to: LU-4215 Some expected improvements for OUT