From: Jan Kara Subject: Re: freeze_bdev hangs Date: Mon, 8 Oct 2012 18:19:26 +0200 Message-ID: <20121008161926.GH9243@quack.suse.cz> References: <506F19E6.8030005@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Eric Sandeen , linux-ext4@vger.kernel.org To: Prashant Shah Return-path: Received: from cantor2.suse.de ([195.135.220.15]:34830 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751983Ab2JHQT2 (ORCPT ); Mon, 8 Oct 2012 12:19:28 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: On Mon 08-10-12 13:13:34, Prashant Shah wrote: > Hi, > > On Fri, Oct 5, 2012 at 11:03 PM, Eric Sandeen wrote: > > I haven't looked at your custom code, but freeze has changed a bit lately, > > and "hangs" is a very vague description > > > > -Eric > > I am monitoring the file system (ext3) for block writes and on > linux-2.6.18 (centos - 5.8 64bit) there are lots of writes request per > second with inode number set to 0 even when the file system is idle > and without any work loads. Didnt see this happen on linux-3.x. > > filter: sector=242983 inode=0 > filter: sector=242991 inode=0 > filter: sector=242999 inode=0 > filter: sector=243007 inode=0 > filter: sector=243015 inode=0 > filter: sector=243023 inode=0 > filter: sector=243031 inode=0 > filter: sector=243039 inode=0 And what tool are you using for monitoring? Honza -- Jan Kara SUSE Labs, CR