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<strong>Lustre 1.8.2</strong>
<strong>Lustre 1.8.2</strong>
<p>Lustre 1.8.2 is now GA and will soon be available for download. Lustre 1.8.2 introduces support for RHEL 5.4, offers several minor improvements (including 16TB LUN support), and provides a number of bug fixes. Learn about the 1.8 family of features - [[Lustre_1.8#Adaptive_Timeouts|Adaptive Timeouts]], [[Lustre_1.8#OSS_Read_Cache|OSS Read Cache]], [[Lustre_1.8#OST_Pools|OST Pools]] and [[Lustre_1.8#Version-Based_Recovery|Version-based Recovery]] and why you should upgrade.</p>
<p>Lustre 1.8.2 is now GA and will soon be available for download (it is already available from the Lustre git repository). Lustre 1.8.2 introduces support for RHEL 5.4, offers several minor improvements (including 16TB LUN support), and provides a number of bug fixes, including the short read-ahead bug for 32-bit clients (see [https://bugzilla.lustre.org/show_bug.cgi?id=21506 Bug 21506]). Learn about the 1.8 family of features - [[Lustre_1.8#Adaptive_Timeouts|Adaptive Timeouts]], [[Lustre_1.8#OSS_Read_Cache|OSS Read Cache]], [[Lustre_1.8#OST_Pools|OST Pools]] and [[Lustre_1.8#Version-Based_Recovery|Version-based Recovery]] and why you should upgrade.</p>


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<p>LUG 2009 was our most successful Lustre user event to date. For presentations and videos, see [[Lustre User Group 2009]].  
<p>LUG 2009 was our most successful Lustre user event to date. For presentations and videos, see [[Lustre User Group 2009]].  
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<strong>[http://wiki.lustre.org/index.php/HPC_Software_Workshop_and_Seminars_-_Regensburg_Germany_2009 HPC Software Workshop and Seminar - Lustre Slides]</strong>
<p>Slides from the presentations at the Lustre Advanced Seminar and Open Storage track at the Sun HPC Software Workshop held September 7-10 are posted [http://wiki.lustre.org/index.php/HPC_Software_Workshop_and_Seminars_-_Regensburg_Germany_2009 here]. Please consider joining the Sun Lustre team at SC09, November 14-20 in Portland, Oregon and also at LUG 2010, April 14-16 at Monterey Bay, California.  [http://lug2010.org/ Registration for LUG 2010] is now open.
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<strong> Lustre Bug Alert: Short Read While Accessing File > 4GB on 32-bit Client</strong>
<strong>[http://wiki.lustre.org/index.php/HPC_Software_Workshop_and_Seminars_-_Regensburg_Germany_2009 HPC Software Workshop and Seminar - Lustre Slides]</strong>
<p>A bug impacting 32-bit Lustre clients has been identified in the most recent 1.8 releases. This issue manifests itself as a short read from files larger than 4GB.
<p>Slides from the presentations at the Lustre Advanced Seminar and Open Storage track at the Sun HPC Software Workshop held September 7-10 are posted [http://wiki.lustre.org/index.php/HPC_Software_Workshop_and_Seminars_-_Regensburg_Germany_2009 here]. Please consider joining the Sun Lustre team at SC09, November 14-20 in Portland, Oregon and also at LUG 2010, April 14-16 at Monterey Bay, California. [http://lug2010.org/ Registration for LUG 2010] is now open.
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The problem is that, on the read path, the Lustre client stores the file size temporarily in a 32-bit variable (this happens only when a glimpse is necessary). Then, when an application tries to read beyond the 4GB offset, variable overflow occurs, resulting in a truncated read returned to the application. To be clear, this is a client side issue and the file is not at all corrupted on disk. 64-bit clients are not impacted by this problem.
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This regression was introduced in 1.8.1 and will be resolved in 1.8.2, so it affects release 1.8.1.1. Lustre 1.8.0.1 and prior releases (including 1.8.0) are unaffected. A patch is available in [https://bugzilla.lustre.org/show_bug.cgi?id=21506 Bug 21506].  
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Revision as of 10:13, 4 February 2010


High Performance and Scalability

For the world's largest and most complex computing environments, the Lustre™ file system redefines high performance, scaling to tens of thousands of nodes and petabytes of storage with groundbreaking I/O and metadata throughput.

More on Lustre performance, service, and support at sun.com/lustre


Lustre 1.8.2

Lustre 1.8.2 is now GA and will soon be available for download (it is already available from the Lustre git repository). Lustre 1.8.2 introduces support for RHEL 5.4, offers several minor improvements (including 16TB LUN support), and provides a number of bug fixes, including the short read-ahead bug for 32-bit clients (see Bug 21506). Learn about the 1.8 family of features - Adaptive Timeouts, OSS Read Cache, OST Pools and Version-based Recovery and why you should upgrade.


Lustre User Group 2010

Plan to join us for LUG 2010 April 14-16 at the Seascape resort and conference center on Monterey Bay, California. Registration for LUG 2010 is now open.

LUG 2009 was our most successful Lustre user event to date. For presentations and videos, see Lustre User Group 2009.


Lustre 2.0 Alpha-6 Available

We are pleased to announce that Lustre 2.0 Alpha-6 is available for download. This is the sixth step in a series of milestone based pre-releases as we move towards Lustre 2.0 GA. New milestone releases will be planned for every 4-6 weeks.


HPC Software Workshop and Seminar - Lustre Slides

Slides from the presentations at the Lustre Advanced Seminar and Open Storage track at the Sun HPC Software Workshop held September 7-10 are posted here. Please consider joining the Sun Lustre team at SC09, November 14-20 in Portland, Oregon and also at LUG 2010, April 14-16 at Monterey Bay, California. Registration for LUG 2010 is now open.


Send feedback on the lustre wiki to: lustre-wiki-feedback@sun.com