From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: Blocked for more than 120 seconds Date: Wed, 30 Nov 2011 09:10:06 -0500 Message-ID: <20111130141006.GY24338@shiny> References: <4ED34359.6010305@robotech.de> <1322472549.1962.2.camel@Nokia-N900> <4ED5FAEF.8070400@robotech.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-btrfs@vger.kernel.org To: Tobias Return-path: In-Reply-To: <4ED5FAEF.8070400@robotech.de> List-ID: On Wed, Nov 30, 2011 at 10:44:15AM +0100, Tobias wrote: > Am 28.11.2011 10:29, schrieb Chris Samuel: > >Hi Tobias, > > > >On Mon, 28 Nov 2011, 19:16:25 EST, Tobias wrote: > > > >>The problem occurs on the stock ubuntu kernel 2.6.38-8, 3.0.0-12, > >>3.0.0-13 and on my self-compiled 3.1.2. > >There's a lot of work gone into btrfs in 3.2, > >it would be interesting to know (speaking as > >just another user) whether it still occurs > >with 3.2-rc3. > > > I tried 3.2-rc3 tonight but the messages are still there: We see a bunch of procs stuck waiting to start a transaction, but we don't see why they are waiting. Could you please capture a sysrq-t during this? That will show us all the waiters everywhere. We're really looking for the one proc stuck in btrfs_commit_transaction, he's the key to the stalls. -chris