Date: Mon, 11 Oct 2010 00:00:28 +0200 From: Kai Gallasch <gallasch@free.de> To: Andriy Gapon <avg@icyb.net.ua> Cc: freebsd-fs@freebsd.org Subject: Re: Locked up processes after upgrade to ZFS v15 Message-ID: <F51886DD-5D2F-46C4-B47B-46B63F8A3DAD@free.de> In-Reply-To: <4CB17983.3020907@icyb.net.ua> References: <39F05641-4E46-4BE0-81CA-4DEB175A5FBE@free.de> <20101009111241.GA58948@icarus.home.lan> <CF901B53-657E-49FC-A43B-27BC7D49F7A7@free.de> <4CB17983.3020907@icyb.net.ua>
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Am 10.10.2010 um 10:29 schrieb Andriy Gapon: > on 09/10/2010 16:37 Kai Gallasch said the following: >> I must repeat. I offer my help if someone wants to dig into the locking problem. > > Kai, > > I would like to look into this. > Can you provide shell access to a system that exhibits the behavior? > Or even better serial console for remote debugging, if possible. Andriy, glad to hear this :) I can give you root access and serial console access to a secondary server, that also showed the same lockups, like the big server. I'll mail you the details. > Also, can you first try with the very latest stable/8 or even head? Yes, I can do so if it's what you want, but wouldn't you loose the chance to identify the real reason for the lockups? If a new kernel with your changes to ZFS sources makes the locking situation disappear, could we be sure that the real reason for the stuck, unkillable processes was fixed? My proposal: I'll do my best to trigger the known bug on the current kernel and let you know. You have a look at this and when you are done gathering data I'll build a new kernel and see if the problem persists. > I have recently MFC-ed a few improvements to ZFS code. The server you will connect to runs on a 8.1-STABLE from Mon Oct 4 01:19:41 CEST 2010. So your commits were after Oct 4th? http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/?sortby=date#dirlist Or is this the wrong place in the src tree? Kai.
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