I am seeing processes on Linux with the name "[126.96.36.1991-ma]", where the number is the IP address of our NFS server. Does anyone know what these processes are, where I can find out information about them, or a good keyword to search the web with?
I see the processes on a machine where something funky is going on with NFS - something seems to be stuck in a loop making a huge number of NFS requests (read, renew, and authrefrsh), but all obvious candidates (like user programs) that might be doing so have been killed.
A large number of
[188.8.131.521-ma] processes exist (for brief periods of time) on the machine in question, but not (at least not for long enough that I have detected them) on machines that are acting normally.
So it would appear that these processes are involved somehow in the problem, but I don't know how.
I found them while looking for processes in "uninterruptible sleep", via
while [ 1 ] ; do ps -w -w -e -o pid,state,tname,time,args| grep ' D ' | grep -v grep; sleep 0.1; done
Details about the system:
Red Hat Enterprise Linux Workstation release 6.3 (Santiago)
Linux [...] 2.6.32-279.5.1.el6.x86_64 #1 SMP Tue Jul 24 13:57:35 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
Thanks in advance!