i SER update Or Gerlitz Ogerlitzvoltaire com www

i. SER update Or Gerlitz Ogerlitz@voltaire. com www. openfabrics. org

Past Ø Merged into Linux kernel 2. 6. 18 and OFED Ø A joint effort of the IB and i. SCSI communities Ø special thanks to Roland, Sean and Mike Christie Ø i. SER push accompanied by the RDMA CM and the i. SCSI kernel library (rdma_cm and libiscsi modules) which are of use for other RDMA ULPs and i. SCSI transports Ø RDMA CM IP & i. SER annexes approved by IBTA Ø i. SER RFC soon to be published by the IETF www. openfabrics. org 2

Nowadays Ø Integration within the Linux open-iscsi initiator framework into distributions to be released at H 1/07 Ø Target side integration with commercial 3 rd party storage vendors Ø Initial work on open source i. SER target within the Linux STGT target Ø Probably implemented in user space! Ø Working prototype exists for INET (tcp) iscsi www. openfabrics. org 3

What’s Next Ø IBTA i. SER annex compliance Ø BIDI transfer (bi-directional scsi commands) Ø Derived by object storage needs Ø in early RFC stage Ø work is planned in all levels: open-iscsi, scsi midlayer. and iser Ø IBTA 1. 2 extensions ØBlock List, ZBVA, Send with Invalidate ØPending HW (e. g. Hermon), FW, and SW (verbs) availability www. openfabrics. org 4

Next Steps (cont’d) ØHigh-Availability / Multi Pathing Øopen-iscsi and i. SER comply well into standard multipathing schemes ØNothing special is planned ØSLP / i. SNS ØWork is needed, but at the open-iscsi / distribution level www. openfabrics. org 5