!?!

I have a tar running, by accident.  I kill it.  Nothing happens.
I've tried specifying '/bin/kill -9'.  I've verified that, not as root,
I get "permission denied".


I can kill a sleep successfully.

Can anyone suggest how or why kill would be ignored?  I'm thinking this may
be related to a process being marked as in disk wait, during which it's
unkillable, but I find it disturbing...

It generally shows up with status R.

The process appears to have exited now, I can't tell if that's from kill -HUP
or from old age.

-s