Deciding how the file system is mounted

Specify when the file system is to be mounted:
yes
When the GPFS daemon starts. This is the default.
no
Manual mount.
automount
When the file system is first accessed.
This can be changed at a later time by using the -A option on the mmchfs command.
Considerations:
  1. GPFS mount traffic may be lessened by using the automount feature to mount the file system when it is first accessed instead of at GPFS startup. Automatic mounts only produce additional control traffic at the point that the file system is first used by an application or user. Mounts at GPFS startup on the other hand produce additional control traffic at every GPFS startup. Thus startup of hundreds of nodes at once may be better served by using automatic mounts.
  2. Automatic mounts will fail if the node does not have the operating system's automount support enabled for the file system.
  3. When exporting file systems for NFS mounts, it may be useful to mount the file system when GPFS starts.