Files suddenly zeroed!?

[mackpei]

Hello,

Yesterday something strange happened on our system:

Some executable files were suddenly zeroed! These files (together with other executable files) are mounted via NFS. We suppose this could be a human cause (perhaps unintended), is also an NFS problem possible?

Hints are appreciated...

Mack

 

[bfitzmai]

This could be an NFS server problem... Are you getting any messages like "NFS Server not Responding" or "RPC Timeout"... If you have root privileges, unmount the NFS mount... "umount /home/<directory>" and try to remount it... cd /home/<directory> to see if your files are back to normal.

 

[mackpei]

Thanks for your hint.

We did not see any messages like "NFS Server not Responding" or "RPC Timeout", because we noticed this error after our system was stopped due to the zero-sized executable files.

Our sysadm restored the zeroed files from backup yesterday.

There were just about 20 from 2000+ files zeroed. Is this a "typical" NFS problem?

Regards
Mack