[gpfsug-discuss] Spectrum Scale with RHEL7.6 kernel 3.10.0-957.21.2

[Felipe Knop]

Hi,

Though we are still learning what workload results in the problem, it
appears that even minimal I/O on the file system may cause the OS to crash.
One pattern that we saw was 'mkdir'.  There is a chance that the DR site
was not yet impacted because no I/O workload has been run there. In that
case, rolling back to the prior kernel level (one which has been tested
before) may be advisable.

  Felipe

----
Felipe Knop                                     knop at us.ibm.com
GPFS Development and Security
IBM Systems
IBM Building 008
2455 South Rd, Poughkeepsie, NY 12601
(845) 433-9314  T/L 293-9314





From:	KG <spectrumscale at kiranghag.com>
To:	gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:	06/09/2019 09:38 AM
Subject:	[EXTERNAL] Re: [gpfsug-discuss] Spectrum Scale with RHEL7.6
            kernel	3.10.0-957.21.2
Sent by:	gpfsug-discuss-bounces at spectrumscale.org



One of my customer already upgraded their DR site.

Is rollback advised? They will be running from DR site for a day in
another week.

On Sat, Jun 8, 2019, 03:37 Felipe Knop <knop at us.ibm.com> wrote:
  Zach,

  This appears to be affecting all Scale versions, including 5.0.2 -- but
  only when moving to the new 3.10.0-957.21.2 kernel. (3.10.0-957 is not
  impacted)

  Felipe

  ----
  Felipe Knop knop at us.ibm.com
  GPFS Development and Security
  IBM Systems
  IBM Building 008
  2455 South Rd, Poughkeepsie, NY 12601
  (845) 433-9314 T/L 293-9314



  Zachary Mance ---06/07/2019 05:51:37 PM---Which versions of Spectrum
  Scale versions are you referring to? 5.0.2-3? ---------------------------

  From: Zachary Mance <zmance at ucar.edu>
  To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
  Date: 06/07/2019 05:51 PM
  Subject: [EXTERNAL] Re: [gpfsug-discuss] Spectrum Scale with RHEL7.6
  kernel 3.10.0-957.21.2
  Sent by: gpfsug-discuss-bounces at spectrumscale.org



  Which versions of Spectrum Scale versions are you referring to? 5.0.2-3?
  ---------------------------------------------------------------------------------------------------------------

  Zach Mance  zmance at ucar.edu  (303) 497-1883

  HPC Data Infrastructure Group / CISL / NCAR
  --------------------------------------------------------------------------------------------------------------- 



  On Fri, Jun 7, 2019 at 3:45 PM Felipe Knop <knop at us.ibm.com> wrote:
        All,

        There have been reported issues (including kernel crashes) on
        Spectrum Scale with the latest RHEL7.6 kernel 3.10.0-957.21.2.
        Please consider delaying upgrades to this kernel until further
        information is provided.

        Thanks,

        Felipe

        ----
        Felipe Knop knop at us.ibm.com
        GPFS Development and Security
        IBM Systems
        IBM Building 008
        2455 South Rd, Poughkeepsie, NY 12601
        (845) 433-9314 T/L 293-9314


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