RE: How to force an UNMOUNT?

One of the interesting side-effects of NFS.

Sometimes you need to IPL to be able to get it working after an unsuccessful UNMOUNT.

In the past generally we would tell customers not to unmount the NFS file system unless they were IPLing.

Would be interesting to know why that occurs and why an IPL is required to recover.

Regards,
Richard Schoen
Web: http://www.richardschoen.net
Email: richard@xxxxxxxxxxxxxxxxx

------------------------------

message: 4
date: Thu, 23 Sep 2021 12:28:05 +0000
from: Rob Berendt <rob@xxxxxxxxx>
subject: How to force an UNMOUNT?

Short of IPL'ing to restricted state, how do you force an UNMOUNT?

UNMOUNT TYPE(*ALL) MNTOVRDIR(*ALL)

File system or directory unmounted.
File system or directory unmounted.
File system or directory unmounted.
Object in use. Object is *N.
Message ID . . . . . . : CPFA09E
Message . . . . : Object in use. Object is *N.
Cause . . . . . : An operation attempted to use object *N. This object is
currently in use.

ENDNFSSVR SERVER(*ALL)

ENDJOB started for job 170678/QUSER/QNFSNLMD.
End of NFS server daemon or daemons of type *NLM was successful.
ENDJOB started for job 170675/QUSER/QNFSNSMD.
End of NFS server daemon or daemons of type *NSM was successful.
ENDJOB started for job 170673/QUSER/QNFSMNTD.
End of NFS server daemon or daemons of type *MNT was successful.
ENDJOB started for job 170670/QUSER/QNFSNFSD.
ENDJOB started for job 170669/QUSER/QNFSNFSD.
End of NFS server daemon or daemons of type *SVR was successful.
ENDJOB started for job 170623/QUSER/QNFSRGYD.
End of NFS server daemon or daemons of type *RGY was successful.
ENDJOB started for job 170586/QUSER/QNFSGSSD.
End of NFS server daemon or daemons of type *GSS was successful.
ENDJOB started for job 170643/QUSER/QNFSBIOD.
End of NFS server daemon or daemons of type *BIO was successful.
ENDJOB started for job 170641/QUSER/QNFSRPCD.
End of NFS server daemon or daemons of type *RPC was successful.
End NFS server command completed successfully.

ENDTCP
ENDSBS *ALL...
Got system ended to restricted state message

RCLSTG

An error has occurred in the Network File System (NFS).
File system or directory unmounted.
An error has occurred in the Network File System (NFS).
Pointer not set for location referenced.
File system error occurred. Error number 3474.
File system may be unusable.

IPL to restricted state, try again. Success.