The IESG has approved the following document: - 'iSCSI Extensions for RDMA Specification' (draft-ietf-storm-iser-15.txt) as Proposed Standard This document is the product of the STORage Maintenance Working Group. The IESG contact persons are Martin Stiemerling and Spencer Dawkins. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-storm-iser/ Technical Summary iSCSI Extensions for RDMA provides the RDMA data transfer capability to iSCSI by layering iSCSI on top of an RDMA-Capable Protocol. An RDMA-Capable Protocol provides RDMA Read and Write services, which enable data to be transferred directly into SCSI I/O Buffers without intermediate data copies. This document describes the extensions to the iSCSI protocol to support RDMA services as provided by an RDMA- Capable Protocol. Working Group Summary This document is a minor update to RFC 5046, primarily to reflect what has actually been done in implementations. WG Last Call turned up several issues around relaxing RFC 5046's requirements based on what implementations have done. These issues involved use of Send message types that have side effects (implementations often do not use these) and the consequences of delayed resource allocation (implementations have run into a race condition that can terminate an iSER connection if measures to avoid it are not taken). All of these issues have been resolved in the current version of this document, although the race condition avoidance is not perfect due to the need to cope with current "running code" in implementations. Document Quality There are multiple implementations of the iSER protocol; the primary purpose of this document is to reflect implementation experience so that the iSER protocol specification matches the "running code". Hemal Shah's review of the document resulted in some important changes in the text describing use of versions of the Send message. Alexander Neshinsky reported the resource allocation problem seen in implmenetations and provided valuable help in working out an approach that encompasses boht the "right thing" to do going forward and necessary measures to cope with current "running code" in implementations. Personnel Document Shepherd: David Black (storm WG co-chair) Responsible Area Director: Martin Stiemerling (Transport)
