IBM General Parallel File System Version 1.2 Enhances Migration, Performance, Recovery, Scalability, and Usability

Software Announcement
October 5, 1998
Announcement Letter Number: 298-364


Table of Contents:



At a Glance

GPFS V1.2 is a shared disk file system that allows access to files within an RS/6000 SP system from any node on the system. Enhancements include:

  • Improved file capabilities at file system creation

  • Changeable memory usage without stopping GPFS

  • Ability to test new releases of GPFS on a GPFS configuration

  • Preallocation of space for open files

  • Additional kernel heap storage for system functions and quicker recovery in case of token manager failures

  • Increased stripe group descriptor limits

  • Available on CD-ROM

  • No-charge upgrade to licensees of GPFS V1.1,
-----------------------------------------
For ordering, contact:
  Your IBM representative, an IBM
  Business Partner, or IBM North America
  Sales Centers at
    800-IBM-CALL  Reference: RE010



Overview

General Parallel File System for AIX (R) (GPFS) V1.2 is a parallel file system that supports almost all of the interfaces in today's popular UNIX (R) standards. GPFS works on a shared disk model. It allows access to files within an RS/6000 (TM) SP (TM) System from any node in the system. This provides high-performance file I/O to parallel jobs running on multiple RS/6000 SP nodes or to serial applications that are scheduled to RS/6000 SP nodes based on processor availability.

GPFS V1.2 has been enhanced in the areas of migration, performance, recovery, scalability and usability.



Intended Customers

RS/6000 SP customers who:

  • Require higher I/O performance

  • Use server consolidation

  • Have continuous high-availability SP environments with applications that use file I/O

  • Need improved performance in their data-intensive applications



Key Prerequisites

  • Parallel System Support Programs for AIX, Version 3.1
  • AIX Version 4.3.2



Planned Availability Dates

  • November 27, 1998: 4-mm and 8-mm tape

  • December 11, 1998: CD-ROM

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This announcement is provided for your information only. For additional information, contact your IBM representative, call 800-IBM-4YOU, or visit the IBM home page at: http://www.ibm.com



DESCRIPTION

General Parallel File System V1.2 for AIX is a shared disk model parallel file system that executes on all nodes of an RS/6000 SP partition. It manages the processing of an application's file system requests on the application node and accesses the assigned disks through the use of the IBM Virtual Shared Disk component of Parallel System Support Programs for AIX. Thus, normal I/O communications occur using the simple disk-level protocol of the IBM Virtual Shared Disk, which provides enhanced performance over other protocols. The use of twin-tailed disks and backup IBM Virtual Shared Disk servers allows applications to continue to operate without interruption in the event of IBM Virtual Shared Disk server or disk adapter failure.

GPFS V1.2 provides the following enhancements:

  • Migration to a new release of GPFS can be tested on a GPFS configuration. This will ease your migration by allowing you to test the new level of code without inhibiting your production level of code until such time as you are satisfied with the new functions.

  • An external programming call provides the ability to preallocate space for an open file. This allows you to allocate space for a file that has already been opened, before writing data to the file.

  • Several files can be created at file system creation in a GPFS file system. The number of i-nodes is now extendible up to a fixed limit, specified at file system creation, and changeable via the MMCHFS command.

  • The GPFS token manager is moved from the AIX kernel to the GPFS daemon. This provides additional kernel heap storage for system functions and quicker recovery in case of token manager failures.

  • Increased stripe group descriptor limits. The 512 disk descriptors are also increased to 1024.

  • Increased flexibility in the use of memory. Memory usage for GPFS can be changed by issuing a command without stopping and reinitializing GPFS.

  • Available on CD-ROM

  • A no-charge upgrade for licensees of GPFS V1.1
The required Recoverable Virtual Shared Disk is now included with Parallel System Support Programs at no additional charge.



Year 2000

This product is Year 2000 ready. Used in accordance with its associated documentation, it can correctly process, provide, or receive date data within and between the twentieth and twenty-first centuries. All other products (for example, software, hardware, and firmware) used with the product must properly exchange accurate date data with it.

The service end date for this Year-2000-ready product is January 31, 2001.



PRODUCT POSITIONING

General Parallel File System is scalable, recoverable, and supports most standard UNIX file system interfaces.



REFERENCE INFORMATION

Refer to Software Announcement 297-318 dated August 26, 1997.

Trademarks

      RS/6000 and SP are trademarks of International Business
      Machines Corporation in the United States or other countries or
      both.
      AIX is a registered trademark of International Business
      Machines Corporation in the United States or other countries or
      both.
      UNIX is a registered trademark in the United States and other
      countries exclusively through X/Open Company Limited.
      Other company, product, and service names may be trademarks or
      service marks of others.



SUPPLEMENTAL INFORMATION



EDUCATION SUPPORT

The following class, AU88V2: RS/6000 (TM) SP (TM): Implementing GPFS, will be available by December 31, 1998.

Visit the following Web site for additional information:

The appropriate curriculum will include the enhancements described in this announcement.

Call IBM Education and Training at 800-IBM-TEACH (426-8322) for catalogs, schedules, and enrollments.



PUBLICATIONS

The GPFS Installation and Administration Guide, (SA22-7278) will be available after planned availability. To order, contact your IBM representative.

The GPFS Problem Determination Guide is available from the RS/6000 Web site:



TECHNICAL INFORMATION



Specified Operating Environment

Hardware Requirements

  • RS/6000 SP System with the SP Switch.

  • A minimum of three nodes must be running GPFS on the RS/6000 SP.
Software Requirements
  • AIX (R) Version 4 Release 3.2, or later modification levels (5765-C34)
  • Parallel System Support Programs for AIX, Version 3 Release 1, or later modification levels (5765-D51)
  • The IBM Virtual Shared Disk image and Recoverable Virtual Shared Disk image of PSSP
Compatibility: In considering migration, no coexistence support is provided with GPFS. All nodes in the partition must be at the same GPFS level. Node to node migration from Release 1 to future releases is not supported, but file data created with Release 1 can be preserved with Release 2 (for example, accessed via Release 2). There is no interoperability between Release 1 and future releases of GPFS.

A test GPFS 1.2.0 configuration can be in the same partition with a GPFS 1.1.0 configuration for test purposes.

Limitations

  • GPFS does not support memory mapped files (mmap)

  • atime, mtime, and ctime are supported within GPFS but not to the accuracy of the X/Open 4.0 standard

  • Release 2 of GPFS requires PSSP 3.1 and therefore will not work with the High-Performance Switch



Planning Information

Packaging: See Packaging Information in Software Announcement 297-318 dated August 26, 1997.



Security, Auditability, and Control

GPFS uses the security and auditability features of the AIX Version 4 operating system.

The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities.



ORDERING INFORMATION

GPFS V1.2 for AIX has one charge unit, the program package, containing the license for use, one installation, and one node to run GPFS on the Control WorkStation (CWS). Use-Packs are in fixed order quantities of 1, 5, 10, and 50, and are ordered based on the number of nodes in your RS/6000 SP system that will be running GPFS.

Orders for new licenses are accepted now. Delivery will begin one week following planned availability.

Program Name: General Parallel File System for AIX, Version 1.2. New users of General Parallel File System for AIX, Version 1.2 should specify Type 5765, Model B95, asset feature number 9001, the one-time charge (OTC) feature number for the program package listed under Order Type Description, CD-ROM, 4-mm or 8-mm media feature number, and OTC feature numbers for the Use-Pack that equals the use quantity desired.

                            OTC           Medium
                          Feature        Feature
Description                Number         Number       Medium

GPFSS V1.2 (5765-B95)

Program Package 1001 5204 CD-ROM 1 Use-Pack 1002 5202 4-mm Data Cartridge 5 Use-Pack 1003 5203 8-mm Data Cartridge 10 Use-Pack 1004 50 Use-Pack 1005

General Parallel File System 1.1.0 will remain orderable after the announce and availability of General Parallel File System 1.2. This provides a file system for customers running AIX 4.2 and PSSP 2.4. Refer to Software Announcement 297-328 dated August 26, 1997, for GPFS 1.1.0 ordering information.

Upgrades: To upgrade from GPFS Release 1 to GPFS Release 2:

                            OTC           Medium
                          Feature        Feature
Description                Number         Number       Medium

Program Package 1006 5204 CD-ROM 1 Install for 1007 5202 4-mm Data Upgrade Cartridge 5203 8-mm Data Cartridge

For current licensees of GPFS V1.1 this is a no-charge upgrade.

AIX/UNIX (R) Upgrade Protection Plan is offered for General Parallel File System 1.2 (5765-B95). Details of upgrade protection for GPFS 2.1 (5765-B95), under the AIX/UNIX Upgrade Protection plan (5692-ADV), will be provided later. Orders for GPFS 2.1 via UPP/5692-ADV can be placed beginning on October 23, 1998.

Refer to Software Announcement 297-318 dated August 26, 1997.

Customization Options: Select the appropriate feature numbers to customize your order with delivery options desired. These features can be specified on the initial or MES orders.

Example: If publications are not desired for the initial order, specify feature number 3470 to ship media only. For future updates, specify feature number 3480 to ship media updates only. If, in the future, publication updates are required, order an MES to remove feature number 3480; then, the publications will ship with the next release of the program.

                                                          Feature
Description                                               Number

Initial Shipments

Serial Number Only 3444 (suppresses shipment of media and documentation) Ship Media Only 3470 (suppresses initial shipment of documentation) Ship Documentation Only 3471 (suppresses initial shipment of media)

Update Shipments

Ship Media Updates Only 3480 (suppresses update shipment of documentation) Ship Documentation Only 3481 (suppresses update shipment of media) Suppress Updates 3482 (suppresses update shipment of media and documentation)

Expedite Shipments

Feature Description Number

Local IBM Office Expedite 3445 (for IBM use only) Customer Expedite Process Charge 3446 ($30 charge for each product)

Expedite shipments will be processed to receive 72-hour delivery from the time IBM Software Manufacturing Solutions (SMS) receives the order. SMS will then ship the order via overnight air transportation.



TERMS AND CONDITIONS

Licensing: IBM International Program License Agreement. Proofs of Entitlement (PoEs) are required for all authorized use.

Limited Warranty Applies: Yes

Program Services: Available until December 31, 2001

Money-back Guarantee: Two-month, money-back guarantee

Copy and Use on Home/Portable Computer: No

Support Line: AIX

Upgrades: Customers can acquire upgrades up to the currently authorized level of use of the qualifying programs.

Volume Orders: Yes, contact your IBM representative.

Passport Advantage Applies: No

AIX/UNIX Upgrade Protection Applies: Yes

Entitled Upgrade for Current AIX/UNIX Upgrade Protection Licensees: Yes

Variable Charges Apply: No

Educational Allowance: Yes, to qualified educational institution customers.



CHARGES

Contact your IBM representative for charges information for this announcement.



CALL NOW TO ORDER

To order, contact the IBM North America Sales Centers, your local IBM representative, or your IBM Business Partner.

IBM North America Sales Centers, our national direct marketing organization, can add your name to the mailing list for catalogs of IBM products.

 Phone:     800-IBM-CALL
 Fax:       800-2IBM-FAX
 Internet:  ibm_direct@vnet.ibm.com
 Mail:      IBM North America Sales Centers
            Dept. RE010
            P.O. Box 2690
            Atlanta, GA  30301-2690
 Reference: RE010

To identify your local IBM Business Partner or IBM representative, call 800-IBM-4YOU.

Note: Shipments will begin after the planned availability date.

Trademarks

      RS/6000 and SP are trademarks of International Business
      Machines Corporation in the United States or other countries or
      both.
      AIX is a registered trademark of International Business
      Machines Corporation in the United States or other countries or
      both.
      UNIX is a registered trademark in the United States and other
      countries exclusively through X/Open Company Limited.
      Other company, product, and service names may be trademarks or
      service marks of others.