From jforte@sac.sfbay.sun.com Wed Jan 6 09:57:18 2010 Received: from sunmail3mpk.sfbay.sun.com (sunmail3mpk.SFBay.Sun.COM [129.146.11.52]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id o06HvISq012179 for ; Wed, 6 Jan 2010 09:57:18 -0800 (PST) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by sunmail3mpk.sfbay.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.4) with ESMTP id o06HvIEQ013230; Wed, 6 Jan 2010 09:57:18 -0800 (PST) Received: from pmxchannel-daemon.nwk-avmta-1.sfbay.Sun.COM by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KVU00J0577IHQ00@nwk-avmta-1.sfbay.Sun.COM>; Wed, 06 Jan 2010 09:57:18 -0800 (PST) Received: from dm-sfbay-02.sfbay.sun.com ([129.146.11.31]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KVU008GM77H1D50@nwk-avmta-1.sfbay.Sun.COM>; Wed, 06 Jan 2010 09:57:17 -0800 (PST) Received: from sac.sfbay.sun.com (sac.SFBay.Sun.COM [129.146.226.132]) by dm-sfbay-02.sfbay.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.4) with ESMTP id o06HvH1J006979; Wed, 06 Jan 2010 09:57:17 -0800 (PST) Received: from sac.sfbay.sun.com (localhost [127.0.0.1]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id o06HvGYb012174; Wed, 06 Jan 2010 09:57:16 -0800 (PST) Received: (from jforte@localhost) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8/Submit) id o06HvGmf012170; Wed, 06 Jan 2010 09:57:16 -0800 (PST) Date: Wed, 06 Jan 2010 09:57:16 -0800 (PST) From: John Forte Subject: EOF of iSCSI Target Daemon [PSARC/2010/006 FastTrack timeout 01/13/2010] To: PSARC-ext@sun.com Cc: james.dunham@sun.com Message-id: <201001061757.o06HvGmf012170@sac.sfbay.sun.com> Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 Status: RO Content-Length: 5831 I am sponsoring this fasttrack for Jim Dunham. Timeout is set for 01/13/2010. - John Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI This information is Copyright 2010 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: EOF of iSCSI Target Daemon 1.2. Name of Document Author/Supplier: Author: James Dunham 1.3 Date of This Document: 06 January, 2010 2. Project Summary 2.1. Project Description This proposal is to remove support for the iSCSI Target Daemon from Solaris Next and OpenSolaris. This fast-track is for advance warning that within Solaris Next and OpenSolaris, the iSCSI Target Daemon, the CLI iscsitadm, the man page iscsitadm(1M), and ZFS's support for 'shareiscsi' support for ZVOLs will be removed. The PSARC cases being deprecated as a result of accepting this proposal are as follows: - PSARC/2007/153 iSCSI target provider - PSARC/2007/414 SCF changes for iSCSI Target - PSARC/2006/622 iSCSI/ZFS Integration - PSARC/2009/168 iSCSI Target PGR directory for ZVOLs The iSCSI Target in COMSTAR will replace all of the aforementioned functionality in Solaris Next and OpenSolaris, with the exception of ZFS's support for 'shareiscsi'. COMSTAR consists of the following PSARC cases: - PSARC/2007/523 COMSTAR: Common Multiprotocol SCSI Target - PSARC/2008/235 SCSI Block Disk Provider for COMSTAR - PSARC/2008/587 iSCSI Port Provider for COMSTAR - PSARC/2009/111 COMSTAR Infiniband SRP Target - PSARC/2008/395 iSER: iSCSI Extensions for RDMA - PSARC/2008/310 FCoE (Fibre Channel over Ethernet) Target 2.2. Risks and Assumptions The architectural design of the iSCSI Target Daemon and ZFS's shareiscsi support, being PSARC/2006/662, is not extensible in its present form, as the underlying implementation is based on a tight association many iSCSI Targets, supporting only a LUN 0, for each shareiscsi enabled ZVOL. COMSTAR's is a multi-protocol SCSI Target implementation that provides support for different types of SCSI Targets, not just iSCSI, supporting LUN numbers up to 16K. ZVOLs are used as backing store devices for SCSI Initiators using one or more or COMSTAR's support protocols. Although the iSCSI Target in COMSTAR is a functional replacement for the iSCSI Target Daemon, there is no means to provide an automated upgrade from one form of iSCSI Target to the other. The iSCSI Target Daemon, and ZFS shareiscsi support, presented a model of many iSCSI Target IDs, with one iSCSI LUNs per target. The iSCSI Target in COMSTAR presents a model of limited iSCSI Target IDs, currently 32, and many iSCSI LUNs per target, up to 16384. A many targets and one LU model, does not map into a few targets, with many LU model. As part of the Solaris Next documentation, a step by step description of how to upgrade existing iSCSI Target Daemon LUs to iSCSI Target LUs in COMSTAR will be provided. 3. Business Summary 3.1. Problem Area Providing and supporting two different implementations of an iSCSI Target service is confusing to both system administrators and end users of Solaris, and also creates an unwanted support burden on Sun, having to support two totally different implementations of an iSCSI Target. The iSCSI Target in COMSTAR, and its use in the Sun Storage 7000 Unified Storage Server, the iSCSI Target in COMSTAR has proven itself as an enterprise class iSCSI Target implementation, in features, functionality, performance and overall stability. This is not the general consensus with the iSCSI Target Daemon, known to be an inferior iSCSI Target implementation. 3.2. Market/Requester 3.3. Business Justification The iSCSI Target in COMSTAR is built on an enterprise class, Common Multiprotocol SCSI Target, that in addition to providing support for iSCSI Targets, it also provides support for iSER, SRP, FC and FCoE SCSI Targets. COMSTAR provides proven block based SCSI Targets support for Solaris Next, OpenSolaris and the Sun Storage 7000 Unified Storage Systems. 3.4. Competitive Analysis Sun has a unique position over other storage vendors and operating systems, in that the iSCSI Target in COMSTAR is Open Source, based on Open Standards, for ubiquitous access to Open Storage. 3.5. Opportunity Window/Exposure Solaris Next, OpenSolaris, Sun Storage 7000 Unified Storage Systems 3.6. How will you know when you are done? Removal of the iSCSI Target in Solaris Next, OpenSolaris, and an installed based that is using the iSCSI Target in COMSTAR, as a replacement for the iSCSI Target Daemon. 4. Technical Description The iSCSI Target Daemon is an inferior implementation when compared to the iSCSI Target in COMSTAR. The iSCSI Target Daemon, supports only a single SCSI Target implementation, has been noted by storage-discuss, RPE and within the Sun Storage 7000 Unified Storage Server as being underperforming, with known scalability issues when used with Solaris, and other operating systems supporting iSCSI Initiators. A point worth stating is that an iSCSI Target listens for iSCSI Initiator requests on TCP/IP port 3260. This means that two different implementations of iSCSI Target can not run at the same time, on the same Solaris host. Therefore, when iSCSI Target in COMSTAR is active on a Solaris host, ZFS's shareiscsi support no longer works, even though the iSCSI Target Daemon has yet to be removed. All of these issues and more, were eliminated with the design, development and successful release of the iSCSI Target in COMSTAR. 6. Resources and Schedule 6.4. Steering Committee requested information 6.4.1. Consolidation C-team Name: ON 6.5. ARC review type: FastTrack 6.6. ARC Exposure: open From Richard.Matthews@sun.com Wed Jan 6 10:22:20 2010 Received: from sunmail2sca.sfbay.sun.com (sunmail2sca.SFBay.Sun.COM [129.145.155.234]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id o06IMKT8013195 for ; Wed, 6 Jan 2010 10:22:20 -0800 (PST) Received: from nwk-avmta-2.sfbay.sun.com (nwk-avmta-2.SFBay.Sun.COM [129.145.155.6]) by sunmail2sca.sfbay.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.4) with ESMTP id o06IMJK2022882 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Wed, 6 Jan 2010 10:22:20 -0800 (PST) Received: from pmxchannel-daemon.nwk-avmta-2.sfbay.sun.com by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KVU00E4T8D76300@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 06 Jan 2010 10:22:19 -0800 (PST) Received: from brmea-mail-2.sun.com ([192.18.98.43]) by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KVU003V28D2DVB0@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 06 Jan 2010 10:22:14 -0800 (PST) Received: from fe-amer-09.sun.com ([192.18.109.79]) by brmea-mail-2.sun.com (8.13.6+Sun/8.12.9) with ESMTP id o06IMDA5019352 for ; Wed, 06 Jan 2010 18:22:13 +0000 (GMT) Received: from conversion-daemon.mail-amer.sun.com by mail-amer.sun.com (Sun Java(tm) System Messaging Server 7u2-7.04 64bit (built Jul 2 2009)) id <0KVU00D008180700@mail-amer.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 06 Jan 2010 11:22:13 -0700 (MST) Received: from dhcp-ublm03-9-40.central.sun.com ([unknown] [129.152.9.40]) by mail-amer.sun.com (Sun Java(tm) System Messaging Server 7u2-7.04 64bit (built Jul 2 2009)) with ESMTPSA id <0KVU00FSD8CR1980@mail-amer.sun.com>; Wed, 06 Jan 2010 11:22:05 -0700 (MST) Date: Wed, 06 Jan 2010 12:22:03 -0600 From: Rick Matthews Subject: Re: EOF of iSCSI Target Daemon [PSARC/2010/006 FastTrack timeout 01/13/2010] In-reply-to: <201001061757.o06HvGmf012170@sac.sfbay.sun.com> Sender: Richard.Matthews@sun.com To: John Forte Cc: PSARC-ext@sun.com, James.Dunham@sun.com Message-id: <4B44D4CB.3010902@Sun.COM> MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <201001061757.o06HvGmf012170@sac.sfbay.sun.com> User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) Status: RO Content-Length: 6593 A whole hearted +1 John Forte wrote: > I am sponsoring this fasttrack for Jim Dunham. Timeout is set for 01/13/2010. > > - John > > > Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI > This information is Copyright 2010 Sun Microsystems > 1. Introduction > 1.1. Project/Component Working Name: > EOF of iSCSI Target Daemon > 1.2. Name of Document Author/Supplier: > Author: James Dunham > 1.3 Date of This Document: > 06 January, 2010 > > 2. Project Summary > 2.1. Project Description > > This proposal is to remove support for the iSCSI Target Daemon > from Solaris Next and OpenSolaris. This fast-track is for advance > warning that within Solaris Next and OpenSolaris, the iSCSI Target > Daemon, the CLI iscsitadm, the man page iscsitadm(1M), and ZFS's > support for 'shareiscsi' support for ZVOLs will be removed. > > The PSARC cases being deprecated as a result of accepting this proposal > are as follows: > > - PSARC/2007/153 iSCSI target provider > - PSARC/2007/414 SCF changes for iSCSI Target > - PSARC/2006/622 iSCSI/ZFS Integration > - PSARC/2009/168 iSCSI Target PGR directory for ZVOLs > > The iSCSI Target in COMSTAR will replace all of the aforementioned > functionality in Solaris Next and OpenSolaris, with the exception of > ZFS's support for 'shareiscsi'. > > COMSTAR consists of the following PSARC cases: > > - PSARC/2007/523 COMSTAR: Common Multiprotocol SCSI Target > - PSARC/2008/235 SCSI Block Disk Provider for COMSTAR > - PSARC/2008/587 iSCSI Port Provider for COMSTAR > - PSARC/2009/111 COMSTAR Infiniband SRP Target > - PSARC/2008/395 iSER: iSCSI Extensions for RDMA > - PSARC/2008/310 FCoE (Fibre Channel over Ethernet) Target > > 2.2. Risks and Assumptions > > The architectural design of the iSCSI Target Daemon and ZFS's shareiscsi > support, being PSARC/2006/662, is not extensible in its present form, as > the underlying implementation is based on a tight association many iSCSI > Targets, supporting only a LUN 0, for each shareiscsi enabled ZVOL. > > COMSTAR's is a multi-protocol SCSI Target implementation that provides > support for different types of SCSI Targets, not just iSCSI, supporting > LUN numbers up to 16K. ZVOLs are used as backing store devices for SCSI > Initiators using one or more or COMSTAR's support protocols. > > Although the iSCSI Target in COMSTAR is a functional replacement for the > iSCSI Target Daemon, there is no means to provide an automated upgrade > from one form of iSCSI Target to the other. The iSCSI Target Daemon, and > ZFS shareiscsi support, presented a model of many iSCSI Target IDs, with > one iSCSI LUNs per target. The iSCSI Target in COMSTAR presents a model > of limited iSCSI Target IDs, currently 32, and many iSCSI LUNs per > target, up to 16384. A many targets and one LU model, does not map > into a few targets, with many LU model. > > As part of the Solaris Next documentation, a step by step description > of how to upgrade existing iSCSI Target Daemon LUs to iSCSI Target LUs > in COMSTAR will be provided. > > 3. Business Summary > 3.1. Problem Area > > Providing and supporting two different implementations of an iSCSI > Target service is confusing to both system administrators and end users > of Solaris, and also creates an unwanted support burden on Sun, having > to support two totally different implementations of an iSCSI Target. > > The iSCSI Target in COMSTAR, and its use in the Sun Storage 7000 Unified > Storage Server, the iSCSI Target in COMSTAR has proven itself as an > enterprise class iSCSI Target implementation, in features, > functionality, performance and overall stability. This is not the > general consensus with the iSCSI Target Daemon, known to be an inferior > iSCSI Target implementation. > > 3.2. Market/Requester > 3.3. Business Justification > > The iSCSI Target in COMSTAR is built on an enterprise class, Common > Multiprotocol SCSI Target, that in addition to providing support for > iSCSI Targets, it also provides support for iSER, SRP, FC and FCoE SCSI > Targets. > > COMSTAR provides proven block based SCSI Targets support for Solaris > Next, OpenSolaris and the Sun Storage 7000 Unified Storage Systems. > > 3.4. Competitive Analysis > > Sun has a unique position over other storage vendors and operating > systems, in that the iSCSI Target in COMSTAR is Open Source, based on > Open Standards, for ubiquitous access to Open Storage. > > 3.5. Opportunity Window/Exposure > > Solaris Next, OpenSolaris, Sun Storage 7000 Unified Storage Systems > > 3.6. How will you know when you are done? > > Removal of the iSCSI Target in Solaris Next, OpenSolaris, and an > installed based that is using the iSCSI Target in COMSTAR, as a > replacement for the iSCSI Target Daemon. > > 4. Technical Description > > The iSCSI Target Daemon is an inferior implementation when compared to > the iSCSI Target in COMSTAR. The iSCSI Target Daemon, supports only a > single SCSI Target implementation, has been noted by storage-discuss, > RPE and within the Sun Storage 7000 Unified Storage Server as being > underperforming, with known scalability issues when used with Solaris, > and other operating systems supporting iSCSI Initiators. > > A point worth stating is that an iSCSI Target listens for iSCSI > Initiator requests on TCP/IP port 3260. This means that two different > implementations of iSCSI Target can not run at the same time, on > the same Solaris host. > > Therefore, when iSCSI Target in COMSTAR is active on a Solaris host, > ZFS's shareiscsi support no longer works, even though the iSCSI Target > Daemon has yet to be removed. > > All of these issues and more, were eliminated with the design, > development and successful release of the iSCSI Target in COMSTAR. > > 6. Resources and Schedule > 6.4. Steering Committee requested information > 6.4.1. Consolidation C-team Name: > ON > 6.5. ARC review type: FastTrack > 6.6. ARC Exposure: open > > -- --------------------------------------------------------------------- Rick Matthews email: Rick.Matthews@sun.com Sun Microsystems, Inc. phone:+1(651) 554-1518 1270 Eagan Industrial Road phone(internal): 54418 Suite 160 fax: +1(651) 554-1540 Eagan, MN 55121-1231 USA main: +1(651) 554-1500 --------------------------------------------------------------------- From John.Forte@sun.com Fri Jan 15 11:16:39 2010 Received: from newsunmail1brm.central.sun.com (newsunmail1brm.Central.Sun.COM [129.147.62.245]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id o0FJGdOx014243 for ; Fri, 15 Jan 2010 11:16:39 -0800 (PST) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by newsunmail1brm.central.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.4) with ESMTP id o0FJGbHX030615 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Fri, 15 Jan 2010 12:16:38 -0700 (MST) Received: from pmxchannel-daemon.nwk-avmta-1.sfbay.Sun.COM by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KWA0040LYVPIU00@nwk-avmta-1.sfbay.Sun.COM> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 15 Jan 2010 11:16:37 -0800 (PST) Received: from brmea-mail-1.sun.com ([192.18.98.31]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KWA00H5OYVO75B0@nwk-avmta-1.sfbay.Sun.COM> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 15 Jan 2010 11:16:37 -0800 (PST) Received: from fe-amer-09.sun.com ([192.18.109.79]) by brmea-mail-1.sun.com (8.13.6+Sun/8.12.9) with ESMTP id o0FJGa3t003317 for ; Fri, 15 Jan 2010 19:16:36 +0000 (GMT) Received: from conversion-daemon.mail-amer.sun.com by mail-amer.sun.com (Sun Java(tm) System Messaging Server 7u2-7.04 64bit (built Jul 2 2009)) id <0KWA00400YQQVN00@mail-amer.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 15 Jan 2010 12:16:36 -0700 (MST) Received: from [129.146.56.52] ([unknown] [129.146.56.52]) by mail-amer.sun.com (Sun Java(tm) System Messaging Server 7u2-7.04 64bit (built Jul 2 2009)) with ESMTPSA id <0KWA00928YVO8H70@mail-amer.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 15 Jan 2010 12:16:36 -0700 (MST) Date: Fri, 15 Jan 2010 11:14:28 -0800 From: John Forte Subject: Re: EOF of iSCSI Target Daemon [PSARC/2010/006 FastTrack timeout 01/13/2010] In-reply-to: <201001061757.o06HvGmf012170@sac.sfbay.sun.com> Sender: John.Forte@sun.com To: James.Dunham@sun.com Cc: PSARC-ext@sun.com Message-id: <4B50BE94.2060105@sun.com> MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <201001061757.o06HvGmf012170@sac.sfbay.sun.com> User-Agent: Thunderbird 2.0.0.17 (X11/20081014) Status: RO Content-Length: 79 This case has timed out with a +1 and has been marked closed approved. - John