[Veritas-bu] bpbkar processes hung on CLOSE_WAIT on Linux
2005-07-07 16:54:33
Subject: |
[Veritas-bu] bpbkar processes hung on CLOSE_WAIT on Linux |
From: |
ddunham AT taos DOT com (Darren Dunham) |
Date: |
Thu, 7 Jul 2005 13:54:33 -0700 (PDT) |
> On researching I found multiple bpbkar processes hung. They can not be
> killed with ANY signal (-9, -1, -15 etc... and yes I know the names
> SIGHUP, SIGTERM etc...).
That almost always indicates that the process made a system call that
did not return.
Have you tried strace on it? I presume it will show nothing. If you
can tell what system call it made, it may give an indication on what's
wrong. Probably a kernel module or driver is hanging.
> lsof reveals all the sockets are in CLOSE_WAIT. They all show the
> master server as the other side but on looking at the master the socket
> does not exist any longer.
>
> =20
>
> The CLOSE_WAIT means the other side has closed. One would expect these
> to go away eventually but I have some that are more than a day old.
They only go away when the application closes from its side or exits.
The CLOSE_WAIT then is just another symptom of the bpbkar process being
hung.
--
Darren Dunham ddunham AT taos DOT com
Senior Technical Consultant TAOS http://www.taos.com/
Got some Dr Pepper? San Francisco, CA bay area
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