Data gathered by gpfs.snap for a controller snapshot

This topic describes the type of data that is always gathered by the gpfs.snap command for a master snapshot.

When the gpfs.snap command is specified with no options, a master snapshot is taken on the node where the command was issued. All of the information from Data gathered by gpfs.snap on all platforms, Data gathered by gpfs.snap on AIX, Data gathered by gpfs.snap on Linux, and Data gathered by gpfs.snap on Windows is obtained, as well as this data:

The output of these commands:

  • mmauth
  • mmgetstate -a
  • mmlscluster
  • mmlsconfig
  • mmlsdisk
  • mmlsfileset
  • mmlsfs
  • mmlspolicy
  • mmlsmgr
  • mmlsnode -a
  • mmlsnsd
  • mmlssnapshot
  • mmremotecluster
  • mmremotefs
  • tsstatus

The contents of the /var/adm/ras/mmfs.log.* file on all nodes in the cluster.

Performance monitoring data

The master snapshot, when taken on a Linux node, collects the following data:

  1. The output of these commands:

    • mmlscluster
    • mmdiag --waiters --iohist --threads --stats --memory
    • mmfsadm eventsExporter mmpmon chms
    • mmfsadm dump nsd
    • mmfsadm dump mb
Note: The InfiniBand fabric and performance monitoring data are collected only when the master node is a Linux node.

InfiniBand interface data

The output of the ibdiagnet command is collected on Linux nodes with InfiniBand network interfaces in case of extended network discovery. It discovers the InfiniBand structure or fabric, and might take several minutes for execution.

The ibdiagnet command creates the following files:

  • ibdiagnet2.debug
  • ibdiagnet2.log
  • ibdiagnet2.db_csv
  • ibdiagnet2.lst
  • ibdiagnet2.net_dump
  • ibdiagnet2.sm
  • ibdiagnet2.pm
  • ibdiagnet2.nodes_info
  • ibdiagnet2.pkey
  • ibdiagnet2.aguid
  • ibdiagnet2.fdbs
  • ibdiagnet2.mcfdbs
  • ibdmchk.sw_out_port_num_paths
  • ibdmchk.sw_out_port_num_dlids