[mythtv-users] OT: How can I tell what process is writing to my hard drive?

[William Munson]

Recently my myth backend system started to have continuous low level 
hard drive activity 24 hours a day. Basically a continuous flicker, not 
solid on. This is not normal for this system and I want to track down 
who is doing all the I/O and hopefully even what file(s). Do any of the 
experts here know how to troubleshoot this kind of a problem. Is there a 
command that allows monitoring of drive activity like top does for 
system activity?

System is FC6 based on MythDora but heavily customized. Myth SVN and 
system are pretty much up to date.

TIA,
Bill