Date: Mon, 11 Oct 2010 08:46:47 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: "Sam Fourman Jr." <sfourman@gmail.com> Cc: freebsd-fs@freebsd.org, Andriy Gapon <avg@icyb.net.ua> Subject: Re: Locked up processes after upgrade to ZFS v15 Message-ID: <20101011154647.GA11532@icarus.home.lan> In-Reply-To: <AANLkTikCDxxqf1v9VOMqKZP7wNimq=6fFLDdyDGMDXQ6@mail.gmail.com> 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> <20101011151508.GA10917@icarus.home.lan> <4CB32C75.2060000@icyb.net.ua> <AANLkTikCDxxqf1v9VOMqKZP7wNimq=6fFLDdyDGMDXQ6@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Oct 11, 2010 at 10:40:11AM -0500, Sam Fourman Jr. wrote: > > Jeremy, > > > > were are in a process of debugging this issue with Kai and I think that we are > > onto something. I would like to ask you for some additional testing. > > > > What kind of workload do your run? > > Do you have anything using sendfile(2)? E.g. Apache with EnableSendfile enabled > > (it might be by default, without explicit options). > > Can you try to disable sendfile(2) use, reboot and see how system behaves? > > > > If you still experience the same problem after doing the above, then I'd like to > > ask you for shell access with root privileges; or establishing communication via > > IM and running some commands for me. > > > > Thank you! > > -- > > Andriy Gapon > > _______________________________________________ > > > Andriy, > > I am not sure if this is the same issue, but > I have a similar problem running FreeBSD 9-CURRENT amd64 (sources as > of 1 hour ago) > a zfs lockup appears very frequently, it is a NFS server it locks up > several times per day. > > I have been having these issues since before the ZFSv15 patch was > committed to HEAD a few months ago. > let me know if you need details, I have no problems giving you root > ssh on this machine... but it does not have a serial port. > so I am not sure how useful it would be. Are the processes which livelock (get stuck and cannot be killed, even with kill -9) stuck in states "zfs" or "zfsmrb"? You can check with "ps -axl" or top. If so, it's probably the same problem. If not, it may be a different problem. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20101011154647.GA11532>