File system issues
Suspect a GPFS file system problem when a file system does not mount or unmount.
You can also suspect a file system problem if a file system unmounts unexpectedly, or you receive an error message indicating that file system activity can no longer continue due to an error, and the file system is being unmounted to preserve its integrity. Record all error messages and log entries that you receive relative to the problem, making sure that you look on all affected nodes for this data.
These are some of the errors encountered with GPFS file systems:
- File system fails to mount
- File system fails to unmount
- File system forced unmount
- Unable to determine whether a file system is mounted
- Multiple file system manager failures
- Discrepancy between GPFS configuration data and the on-disk data for a file system
- Errors associated with storage pools, filesets and policies
- Failures using the mmbackup command
- Snapshot problems
- Failures using the mmpmon command
- NFS issues
- File access failure from an SMB client with sharing conflict
- Data integrity
- Messages requeuing in AFM