[gpfsug-discuss] internal details on GPFS inode expansion

[David Johnson]

When GPFS needs to add inodes to the filesystem, it seems to pre-create about 4 million of them.
Judging by the logs, it seems it only takes a few (13 maybe) seconds to do this.
However we are suspecting that this might only be to request the additional inodes and 
that there is some background activity for some time afterwards.  
Would someone who has knowledge of the actual internals be willing to confirm or deny this,
and if there is background activity, is it on all nodes in the cluster, NSD nodes, "default worker nodes"?

Thanks,
 -- ddj
Dave Johnson
ddj at brown.edu