Date: Sun, 10 Feb 2013 16:56:00 -0800 From: Marc Fournier <scrappy@hub.org> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: 9-STABLE -> NFS -> NetAPP: Message-ID: <0EB27C56-93A1-4FAE-9FB5-CAD960098609@hub.org> In-Reply-To: <1946688889.2870936.1360542666536.JavaMail.root@erie.cs.uoguelph.ca> References: <1946688889.2870936.1360542666536.JavaMail.root@erie.cs.uoguelph.ca>
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--Apple-Mail=_4E15226B-B282-4E39-9A08-2093243749EB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 On 2013-02-10, at 4:31 PM, Rick Macklem <rmacklem@uoguelph.ca> wrote: > Marc Fournier wrote: >> Hi John =85 >>=20 >> Does this help? >>=20 >> root@io:~ # ps auxl | grep du >> root 1054 0.0 0.1 16176 6600 ?? D 3:15AM 0:05.38 du -skx /vm/2799 0 >> 81426 0 20 0 newnfs >> root 12353 0.0 0.1 16176 5104 ?? D Sat03AM 0:05.41 du -skx /vm/2799 0 >> 91597 0 20 0 newnfs >> root 64529 0.0 0.1 16176 5164 ?? D Fri03AM 0:05.40 du -skx /vm/2799 0 >> 43227 0 20 0 newnfs >> root 12855 0.0 0.0 16308 1988 0 S+ 5:26AM 0:00.00 grep du 0 12847 0 = 20 >> 0 piperd > It is probably too late, but all the lines (without the | grep du) = would be > more useful. I also include the "H" flag, so it lists threads as well = as > processes. The above just says the "du" command is waiting for a vnode = lock. > The interesting process/thread is the one that is holding a vnode lock > while waiting for something else. As requested, 'ps auxlH' attached =85 --Apple-Mail=_4E15226B-B282-4E39-9A08-2093243749EB Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii > > Are you still getting the: > nfs_getpages: error 13 > vm_fault: pager read error, pid 11355 (https) Fairly quiet: --Apple-Mail=_4E15226B-B282-4E39-9A08-2093243749EB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 And that is it since last reboot ~20 days ago =85=20 >=20 > messages logged? >=20 > With John's recent patch, the error# would no longer be 13 if it was > caused by the "intr" flag resulting in a Read RPC terminating with = EINTR. > If you are still getting the above with "error 13", it suggests that > the server is replying EACCES for the Read RPC. > I suggested before that you check to make sure that the executable had > read access for everyone one the file server. Since I didn't hear = back, > I'll assume this is the case. Don't understand this question =85 I have 34 VPSs running off of this = server right now =85 that 'du process' runs against each of those VPSs = every night, and this problem started happening on Friday night's run =85 = ~18 days into uptime =85 so the same process has run repeatedly, with no = issues, 18 times before it hung on Friday =85 also, the hang, once = 'triggered', only seems to recur against the same directory =85 the same = directory doesn't necessarily trigger it, but once it starts, it appears = to do it for the same directory =85 I'm not sure if I've ever seem it = happening to two different directories at the same time =85 Also, please note that the du command is run from the physical server, = as root =85 > rick > ps: If it is still up and hasn't been rebooted, you could: > sysctl debug.kdb.break_to_debugger=3D1 > - then type <ctrl><alt><esc> at the console and do the following > from the debugger > = http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerne= ldebug-deadlocks.html > How well this work depends on what options your kernel was built = with. My remote console on that one doesn't work very well =85 I can view, but = I can't type =85 --Apple-Mail=_4E15226B-B282-4E39-9A08-2093243749EB--
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