pNFS Update Garth Goodson Status Draft is currently at 62 pages - - PowerPoint PPT Presentation

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Oct 13, 2023 340 likes •408 views

pNFS Update Garth Goodson Status Draft is currently at 62 pages Many updates since Paris IETF Please read through and give feedback Update highlights Refined defs of layouts and layout segments Includes defs for

SLIDE 1

pNFS Update

Garth Goodson

SLIDE 2

Status

 Draft is currently at 62 pages  Many updates since Paris IETF  Please read through and give feedback

SLIDE 3

Update highlights

 Refined defs of layouts and layout segments

 Includes defs for overlapping/conflicting layouts

 Updated crash recovery considerations

 Both in general and for NFSv4 Files  For clients, metadata server, storage devs

 Updated operation sequencing discussion  File-based device multipathing for failures

 Assumes equivalent devices

SLIDE 4

Open issues/To do

 OPEN principals & stateids for I/O

 Much discussion, won’t solve it here/now

 Callback sequencing via sessions

 Discussion on adding support in sessions

 More text on error handling required  Flags in layoutrecall to specify client behavior

 E.g., write through MDS, re-get layout…

 References to block/obj layout structures

SLIDE 5

Going forward

 NFSv4.1 discussion (later)  Prototyping and interoperability

 Should aim for Connectathon demos