Date: Wed, 22 Jun 2011 08:13:25 +0400 From: Andrey Chernov <ache@FreeBSD.ORG> To: "Kenneth D. Merry" <ken@FreeBSD.ORG> Cc: Kostik Belousov <kostikbel@gmail.com>, Eir Nym <eirnym@gmail.com>, "Justin T. Gibbs" <gibbs@FreeBSD.ORG>, current@FreeBSD.ORG, will@FreeBSD.ORG Subject: Re: Exactly that commit (was Re: Latest -current 100% hang at the late boot stage) Message-ID: <20110622041325.GA13754@vniz.net> In-Reply-To: <20110622035404.GA38834@nargothrond.kdm.org> References: <BANLkTimCegAu0ERJyLaCqen0=F%2BbWMDBNw@mail.gmail.com> <20110619232307.GA57530@vniz.net> <20110620001912.GA60252@vniz.net> <4DFEAD4F.1040603@FreeBSD.org> <20110620070222.GA74009@vniz.net> <20110620080146.GF48734@deviant.kiev.zoral.com.ua> <20110620114656.GA83524@vniz.net> <20110621161719.GA16166@nargothrond.kdm.org> <20110621204934.GB9877@vniz.net> <20110622035404.GA38834@nargothrond.kdm.org>
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On Tue, Jun 21, 2011 at 09:54:04PM -0600, Kenneth D. Merry wrote: > These two are interesting: > > > http://img825.imageshack.us/img825/1249/21062011014m.jpg > > http://img839.imageshack.us/img839/3791/21062011015.jpg > > It looks like the GEOM event thread is stuck inside the cd(4) driver. The > cd(4) driver is trying to acquire the peripheral lock, and is sleeping > until it gets it. > > What isn't clear is who is holding it. The ps output shows an idle thread > running on CPU 1, and thread 100014 (taskq) running on CPU 0. > Unfortunately I don't see a stack trace for that. (I might have missed > it.) > > Do you happen to have the image with the stack trace for that thread? I don't have the image because no disks are mounted at that stage and the swap slice is not attached. But I can issue more specific DDB commands to narrow it down, just say what you need in detail. BTW, the machine have 2 DVD both are attached to Marvell IDE plain ATA interface, they always works before. Are you sure that something holding the lock? 'show lock' shows absolutely nothing, it is empty. -- http://ache.vniz.net/
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