GPFS filesystem is hanging and there is a slowness in job processing

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux (RHEL)
  • IBM Spectrum Scale's Global Parallel File System (GPFS)

Issue

  • /abcd/ file system is hanging and there is a slowness in job processing.
  • Does Red Hat support the IBM Spectrum Scale Global Parallel File System (GPFS)?
  • Does Red Hat support Global Parallel File System (GPFS)?
  • Does Red Hat support the mmfslinux kernel module?
  • Does Red Hat support the mmfs26 kernel module?

Resolution

  • Global Parallel File System (GPFS) is not shipped by Red Hat.
  • Please contact the file system vendor i.e. IBM Spectrum Scale to debug the issue.

Root Cause

Diagnostic Steps

  • You can check in sosreport with the following command:

    • Look in proc/mounts for gpfs mounts

      $ grep -w gpfs proc/mounts 
/dev/abcd /efg gpfs rw,relatime 0 0

    • Look in etc/fstab for gpfs mounts

      # grep -w gpfs etc/fstab 
 /dev/abcd /efg gpfs rw,mtime,atime,dev=abcd,noauto 0 0

    • Look for the mmfs kernel modules in modinfo output

      $ grep -A3 ^filename.*mmfs sos_commands/kernel/modinfo*
filename:       /lib/modules/3.10.0-327.62.1.el7.x86_64/extra/mmfs26.ko
supported:      external
author:         IBM <gpfs@us.ibm.com>
description:    GPFS Kernel Module
--
filename:       /lib/modules/3.10.0-327.62.1.el7.x86_64/extra/mmfslinux.ko
supported:      external
author:         IBM <gpfs@us.ibm.com>
description:    GPFS portability layer

This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.

Comments