In the following the name of the GPFS file system is totofs
Display the state of the GPFS damemon
mmgetstate -aLv
Display current configuration and of the disk
mmlsdisk totofs
Disks listing
mmlsnsd
Available space disk
mmdf totofs
Delete disk01,disk02 & disk03 from GPFS file system (all the data will be copy on other disks)
mmdeldisk totofs "disk01;disk02;disk03"
Delete disk01,disk02 & disk03 from the GPFS cluster
mmdelnsd totofs "disk01;disk02;disk03"
Change the state of disk01 from down to up:
mmchdisk totofs start -d disk01
Rebalances or restores the replication of all files in totofs
mmrestripefs totofs -r