Date: Tue, 24 Feb 2009 22:18:57 -0800 From: "Kevin Oberman" <oberman@es.net> To: Guy Helmer <ghelmer@palisadesys.com> Cc: freebsd-stable@freebsd.org Subject: Re: 7.1 hangs in cache_lookup mutex? Message-ID: <20090225061857.4CAE21CC0B@ptavv.es.net> In-Reply-To: Your message of "Tue, 24 Feb 2009 15:46:28 CST." <49A46AB4.3080003@palisadesys.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> Date: Tue, 24 Feb 2009 15:46:28 -0600 > From: Guy Helmer <ghelmer@palisadesys.com> > Sender: owner-freebsd-stable@freebsd.org > > I think I may have found a clue regarding some of the hangs I'm seeing > on FreeBSD 7.1. > I have a program (kvoop), compiled under FreeBSD 6 and using > compatibility libraries under FreeBSD 7, that seems to be consistently > involved during these hangs. This time, I noticed that many processes > are stopped, waiting on the ufs lock. I can't tell for certain, but I > assume this kvoop process 33203 is blocking the other processes. The > kvoop process looks to me like it is waiting for a mutex, but nothing > shows up being deadlocked. Am I on the right track? Is there something > else I should be looking for? For whatever it is worth, I have seen this three times over the past couple of weeks. My system is RELENG_7 of Feb. 7. I have no real information to add other than that I have also had this problem. When it happens, the only way out is a reboot. It hit me twice while updating Xorg. Thanks for your efforts! I hope someone can track down what is triggering with this. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090225061857.4CAE21CC0B>