[ale] lsof and a hung system

[DJPfulio at jdpfu.com (DJ-Pfulio)]

On 10/19/2015 06:14 PM, Jim Kinney wrote:
> So the user notifies me they can do a cd to an nfs mounted directory. I
> get on and can't do ls -la on /. there's a trio of cat commands that
> are hung and anything that reads data from the drives basically does
> nothing. Nothing is running but the load average is 20 and not
> changing. So I try to kill the cat's and unmount the nfs folder.  No
> work. Dang! what else is open? run lsof. Nothing happens. 
> I'm expecting all sorts of file system errors when after I press the
> reset switch. A sync command just hangs. dmesg shows user space
> applications segfaults all over the the place. So the (very new) user
> would just run it again. I've got a zombie collection that The Walking
> Dead would call a "herd".
> 

sync?
hard?
nfs v3/v4?
mount options?



Zombies?!!?

*
http://abcnews.go.com/Technology/zombie-bees-found-northeast/story?id=22290433

* http://www.cdc.gov/phpr/zombies.htm - gotta be prepared