IJ53140: FORCE UNMOUNT OF A J2 FILESYSTEM MAY TAKE LONGER UNDER NFS ENV APPLIES TO AIX 7300-04

APAR status

• Closed as program error.

Error description

• Here is a scenario where the force unmount of a J2
  filesystem was taking longer than expected:
  
  1. The NFS server hosts 17 J2 filesystems, which are
     exported to an NFS client.
  2. One of these J2 filesystems on the NFS server
     contains approximately 300,000 files.
  3. The NFS client mounts all 17 filesystems and runs a
     scanner application on them.
  4. After the scanner application completes its task,
     the filesystems are unmounted on both the NFS client
     and the NFS server.
  5. On the NFS server, the filesystems are force
  unmounted.
  
  However, the force unmount of the specific J2 filesystem
   is taking longer than usual.
  

Local fix

Problem summary

• On a AIX LPAR when a j2 filesystem is exported as nfs share,
  then fter unmounting the nfs share and when unmounting
  the j2 using force unmount option, the unmount will
   take aroung  30-35 mins.
  

Problem conclusion

• The vnc cache will be purged, before proceeding to cleanup the
  inodes of the FS.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IJ53117

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  AIX V7.3

• Fixed component ID

  5765CD300

Applicable component levels