URGENT: [diagnostic] cache_lock: blocked on 0xda5265a8 ""

[Matthew Dillon]

:cache block thing is the only thing showing up in dmesg when processes
:start hanging.

    I dont see any disk hangs (no wchan's are in the bio subsystem).  You
    may have found a namecache deadlock but I can't track it down without
    a kernel core and it sounds like you need physical access to do one
    safely, unless you have a remote power cycler on the box too.

						-Matt