[LU-3285] Data on MDT

• Type: New Feature
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.11.0
• Affects Version/s: Lustre 2.7.0
• Assignee: Mikhail Pershin
• Reporter: Mikhail Pershin

Description

Change MDS and client stacks to handle both meta and data requests. This makes MDS to be able to store data of file along with metadata.

Issue Links

• is related to: LU-10496 sanity-dom sanity test_39k: FAIL: mtime is lost on close: 1515705427, should be 1484169395
• is related to: LU-11558 t32_verify_quota() not being called by t32_test()
• is related to: LU-14808 yaml support for DOM file
• is related to: LU-10498 sanity-dom test_fsx: FAIL: test_fsx failed with 120
• is related to: LU-10178 DoM: Use synced last BRW instead of extra SYNC RPC for CLIO fsync
• is related to: LU-10280 DoM cross-file open+readahead via statahead
• is related to: LU-10177 DoM: manual migration MDT-OST
• is related to: LU-10181 DoM performance optimization
• is related to: LU-11421 DoM: manual migration OST-MDT, MDT-MDT
• is related to: LU-10175 DoM:Full support for the LDLM lock convert
• is related to: LU-10180 DoM technical debts
• is related to: LU-10179 DoM: Data-on-MDT recovery cases
• is related to: LU-1757 Short I/O support
• is related to: LU-12196 mkfs.lustre should handle large MDTs properly
• is related to: LU-10176 Data-on-MDT phase II
• is related to: LUDOC-385 Data on MDT Documentation
• is related to: LU-5319 Support multiple slots per client in last_rcvd file