Bakeathon 2007 Issues List

From Linux NFS

• Complete server export getdeviceinfo/getdevicelist implementation [Marc/Dean]
• Number of sessions slots hardcoded to be number of rpc slots. Need ability to dynamically change this value. rpc_slots is ceiling on sessions_slots. Dynamic slot allocation on client and server. [Rahul]
• Sessions priority on sessions slot table. Change to use priority wait queue for slot table. (will do fair scheduling) []
• Session/sunrpc retry behavior [?]
• Session interupt issues [?]
• Incremental sessionid creation issues [Marc]
• Client layout syncronization issues [Benny]
• 2.6.18 client port to 2.6.23 [Andy, Ricardo]
• Managing layout segment (alloc/inject layout) [Andy, Benny]
• Layout device/lease []
• Delegations and Layouts []
• Continue to use devicelist on mount? []
• MDS/DS I/O syncronization, need to determine if 'commit' needs to be sent to data servers and/or MDS []

-> Interface to layout driver is fine (sends list of dirty pages) but need flag to indicate if those pages were written to a data server or MDS (might also need another flag to say that once they are committed they also need to be layoutcommitted)

• Layoutget timing [Andy pay attention as code ported forward]

-> Put when write/read chunk size determined (nfs_pageio_init_write/read)

• Asyncronous layoutget [Future Work, Requires more investigation/justification]
• Server 4.1 replay cache [Extra 4.1 correctness work]
• Layout driver API and layout driver callback API needs to be streamlined and optimized

-> Avoid having layout driver calling NFS common code directly, it should use the layout driver callback API.

• Must call layoutcommit before removing pages from page cache.
• devicelist crashes kernel if use 4KB pages

-> Need to dynamically allocate devlist