File mv over NFS caused target vxfs to hang

[Thomas Lydick]

During a move process from one HP-UX 11.11 server to another through a NFS mount halted part way through.

Currently the target local vxfs file system is hung and any access is froze.

In addition I'm unable to kill the orginal mv command and other commands that followed.
ie du, df, umount.

[F Verschuren]

you can try to stop/start the nfs deamons.
a move locks the file, and a hickup can cause a wait on IO... a stop start can help if it wil not help I think a reboot is the only desent solution left...

[Dave Olker]

If you really want to pursue this problem then you should open a support call with HP and get the WTEC folks to load their analysis tools on the system. Some of these tools can analyze a running system and determine why the process is hung, where it is blocked, what resource it's waiting for, etc.

They may not be able to recover the mv process as it appears completely wedged, but they might be able to determine why it happened to help you avoid it happening in the future.

Your other option, if you're going to reboot the system anyway, would be to TOC the system and collect a memory dump that could be analyzed by HP support.

If you already have the analysis tools on your system then I could give you some ideas of things to run to collect the relevant data.

Regards,

Dave