Table Of Contents
Release Notes for Cisco iSCSI Driver Version 3.3.4 for Sun Solaris
November 14, 2003
These release notes support Cisco iSCSI Driver version 3.3.4 for Sun Solaris.
For a list of software caveats that apply to version3.3.4, see the "Caveats" section. The caveats are updated for every maintenance version and are located on Cisco.com and the Documentation CD-ROM.
These release notes describe the following topics:
The iSCSI Driver for Sun Solaris provides an IP host with the ability to access storage through an IP network. The iSCSI driver uses the iSCSI protocol to transport SCSI requests and responses over an IP network between the IP host and a Cisco SN 5400 or MDS 9000 Series system.
Architecturally, the iSCSI driver combines with the IP host's TCP/IP stack, network drivers, and network interface cards (NICs) to provide the same functions as a SCSI or a Fibre Channel adapter driver with a host bus adapter (HBA).
The iSCSI driver provides a transport for SCSI requests and responses for storage devices; however, instead of providing a transport for directly attached devices, the driver transports the SCSI requests and responses between the IP host and a Cisco SN 5400 or MDS 9000 Series system via an IP network. The SN 5400 or MDS 9000 Series system, in turn, transports SCSI requests and responses between it and the storage devices attached to it.
Once the iSCSI driver is installed and started, the host proceeds with a discovery process for storage devices.
A more technical description of the driver's design and its features can be found in the readme file that accompanies the iSCSI driver in the downloaded driver archive file.
Note The iSCSI protocol is an IETF-defined protocol for IP storage (ips). For more information about the iSCSI protocol, refer to the IETF standards for IP storage at http://www.ietf.org.
This section describes the system requirements for version 3.3.4 and includes the following information:
Operating System Requirements
•The iSCSI Driver for Sun Solaris runs only on SPARC processor-based machines.
•The iSCSI Driver for Sun Solaris requires either Sun Solaris version 7, 8 or 9, with all Sun-recommended patches installed for the version being used.
•If you are using the Sun Gigabit Ethernet adapter, the SUNWged driver must have the most recent version of patch 106765 (for SUNWged version 2.0) or patch 108813 (for SUNWged version 3.0) installed.
•The iSCSI Driver for Sun Solaris supports both single and multiple processor machines.
•To ensure the best performance for the iSCSI driver, the extended windowing feature of TCP should be enabled on all IP hosts. In general, a larger window size enhances system throughput performance.
•To maximize performance, the receive and transmit flow control feature of the Gigabit Ethernet driver should be enabled on all IP hosts. If the IP hosts are connected to any Ethernet switches, the receive and transmit flow control attributes should be enabled on each of the connected switch ports.
SN 5400 Series System Software Requirements
The iSCSI Driver version 3.3.4 for Sun Solaris is interoperable with a Cisco SN 5400 Series system running software release 3.2 or later. This version of the driver is not interoperable with a Cisco SN 5400 Series system running software release 2.5 or earlier.
MDS 9000 Series System Software Requirements
The iSCSI Driver version 3.3.4 for Sun Solaris is interoperable with a Cisco MDS 9000 Series system running SAN-OS Release 1.1(1) or later.
This section describes how to obtain iSCSI driver software and upgrade an existing iSCSI driver installation, and includes the following information:
Downloading the iSCSI Driver
Registered Cisco.com users can download the most current Cisco iSCSI drivers, readme files and release notes from Cisco.com. In addition, information about driver compatibility and other relevant driver information is available on Cisco.com. You can access software and related information by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Technical Support and Software Center.
Step 2 At the Software Center web page, under Software Products & Downloads, click Storage Networking Software.
Step 3 At the Storage Networking Software web page, click the appropriate link for your software.
Step 4 At the Software Download web page, click the file that you want to download.Another software download web page will be displayed with detailed information about the download file and Cisco's Software License Agreement. Follow the instructions on that and any subsequent web pages to download the software.
Step 5 To install and configure storage router software, see the appropriate storage router software configuration guide and release notes. To install and configure an iSCSI driver, see the readme file that accompanies the iSCSI driver (in the downloaded driver archive file) and the appropriate release notes.
Installing, Upgrading and Uninstalling iSCSI Driver Software
For complete procedures to install and configure, upgrade, or uninstall iSCSI driver software, refer to the readme file that accompanies the iSCSI driver (in the downloaded driver archive file).
New and Changed Information
The iSCSI driver for Sun Solaris no longer supports Sun Solaris version 2.6. It supports Sun Solaris version 7, 8 or 9 only.
Caveats describe unexpected behavior or defects in the specified version of the driver. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.
This document describes open and resolved severity 1 and 2 caveats and selected caveats of other severities:
•The "Open Caveats" section lists open caveats that apply to the current version and may apply to previous versions.
•The "Resolved Caveats" section list caveats resolved in this version, but open in previous versions.
Within the sections, the caveats are sorted alphanumerically by caveat number.
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any version. You can reach Bug Navigator II on Cisco.com at Service & Support:
There are no open severity 1 or 2 caveats for the iSCSI driver version 3.3.4 for Sun Solaris.
When traffic is running and async events occur on the targets, the iSCSI connections may get dropped and do not recover, causing traffic to stop. The Sun Gigabit Ethernet card may then fail to ping anything on the Gigabit Ethernet network. In some cases, a system panic may occur.
The problem only occurs when the iSCSI driver is running on a Solaris host with Sun Gigabit Ethernet patches 108813-12, 108813-13.
Workaround: None. This problem is resolved in iSCSI driver version 3.3.4.
Cisco iSCSI driver troubleshooting information is available on the Cisco.com web site.
You can access troubleshooting information by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Products & Services, and select Storage Networking Products from the menu.
Step 2 At the Cisco Storage Networking Products web page, click Cisco SN 5400 Series Storage Routers, and then click Technical Documentation.
Step 3 At the Technical Documentation web page, click the Tech Notes link.
Step 4 At the Tech Notes page, click the appropriate link for your iSCSI driver.
You can access iSCSI driver FAQs by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Products & Services, and select Storage Networking Products from the menu.
Step 2 At the Cisco Storage Networking Products web page, click Cisco SN 5400 Series Storage Routers, and then click Product Literature.
Step 3 At the Product Literature web page, click the Q&A link.
Step 4 At the Q&A page, click the appropriate link for your iSCSI driver.
The following sections describe the related documentation available for the iSCSI Driver version 3.3.4 for Sun Solaris. These documents consist of the iSCSI driver release notes and readme file, and the SN 5400 and MDS 9000 Series system hardware installation and software configuration guides.
This Release Notes document and the readme file are the only documents specific to iSCSI Driver version 3.3.4 for Sun Solaris. The release notes document is located on Cisco.com and the Documentation CD-ROM. The iSCSI driver readme file is available in electronic format, as part of the software download package. See the "Downloading the iSCSI Driver" section for details.
Refer to the appropriate SN 5400 or MDS 9000 Series system hardware installation guide for hardware installation procedures. These documents are available as electronic documents on Cisco.com and the Documentation CD-ROM, and they may also be available as printed manuals.
Refer to the appropriate SN 5400 or MDS 9000 Series system software configuration guide for software configuration information. These documents are available as electronic documents on Cisco.com and the Documentation CD-ROM, and they may also be available as printed manuals.
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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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