[gpfsug-discuss] FYI - Spectrum Scale 5.0.2 Available

[Simon Thompson]

Looks like its also moved to a unified installer … i.e. no separate download for protocols anymore.

Simon

From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of "Robert.Oesterlin at nuance.com" <Robert.Oesterlin at nuance.com>
Reply-To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Date: Friday, 14 September 2018 at 20:37
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] FYI - Spectrum Scale 5.0.2 Available

I did not see this on Fix Central yet (I’m assuming you can upgrade from 5.0.1,X) , but it is on Passport Advantage. Looks like a nice set of changes, which is summarized here:

https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1xx_soc.htm

Here are few highlights I think are worth noting (not all of them)  – I beta tested watch folders and It’s a great addition to Scale.

File system core improvements

  *   Combined gpfs.base and gpfs.ext into a single package on Linux
  *   File system maintenance mode provides a safe access window for file system maintenance
  *   The maxActiveIallocSegs attribute improves the performance of deletes and unlinks
  *   The mmnetverify command checks the connectivity of remote clusters
  *   The GPFS portability layer (GPL) can be rebuilt automatically
     *   You can now configure a cluster to automatically rebuild the GPL whenever a new level of the Linux kernel is installed or whenever a new level of IBM Spectrum Scale is installed. For more information, see the description of the autoBuildGPL attribute in the topic mmchconfig command<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_mmchconfig.htm?view=kc>.
  *   Two features cope with long I/O waits on directly attached disks

  *   The diskIOHang callback event allows you to add notification and data collection scripts to analyze the cause of a local I/O request that has been pending in the node kernel for more than 5 minutes. For more information, see mmaddcallback command<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_mmaddcallback.htm?view=kc>.
  *   The panicOnIOHang attribute controls whether the GPFS daemon panics the node kernel when a local I/O request has been pending in the kernel for more than five minutes. For more information, see mmchconfig command<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_mmchconfig.htm?view=kc>.

Watch folder
Watch folder is a flexible API that allows programmatic actions to be taken based on file system events. For more information, see Introduction to watch folder<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1ins_wfintro.htm?view=kc#watchintro>. It has the following features:

  *   Watch folder can be run against folders, filesets, and inode spaces.
  *   Watch folder is modeled after Linux inotify, but works with clustered file systems and supports recursive watches for filesets and inode spaces.
  *   Watch folder has two primary components:

o    The GPFS programming interfaces, which are included within <gpfs_watch.h>. For more information, see Watch folder API<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_watchfolderapi.htm?view=kc#watchfolderapi>.

o    The mmwatch command, which provides information for all of the watches running within a cluster. For more information, see mmwatch command<https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_mmwatch.htm?view=kc#mmwatch>.

  *   A watch folder application uses the API to run on a node within an IBM Spectrum Scale cluster.

o    It utilizes the message queue to receive events from multiple nodes and consume from the node that is running the application.

o    Lightweight events come in from all eligible nodes within a cluster and from accessing clusters.

  *   Watch folder is integrated into call home, IBM Spectrum Scale snap log collection, and IBM Spectrum Scale trace.



Bob Oesterlin
Sr Principal Storage Engineer, Nuance
507-269-0413

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