From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: FS / Kernel question choosing the correct kernel version Date: Tue, 26 Jun 2012 11:07:52 +0200 Message-ID: <4FE97BE8.6010603@profihost.ag> References: <4FE60A65.2030800@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:44044 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752176Ab2FZJHz (ORCPT ); Tue, 26 Jun 2012 05:07:55 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sage Weil Cc: "ceph-devel@vger.kernel.org" Am 26.06.2012 00:11, schrieb Sage Weil: > On Sat, 23 Jun 2012, Stefan Priebe wrote: >> Hi, >> >> i got stuck while selecting the right FS for ceph / RBD. >> >> XFS: >> - deadlock / hung task under 3.0.34 in xfs_ilock / xfs_buf_lock while syncfs > > There was an ilock fix that went into 3.4, IIRC. Have you tried vanilla > 3.4? We are seeing some lockdep noise currently, but no deadlocks yet. Will test 3.4.4 soon. >> - under 3.5-rc3 all my machines got loaded doing nothing than waiting for XFS >> / SSDs so ceph is really slow / unuseable > >> btrfs: >> - 3.5-rc3 ceph is pretty fast and works good until i see also a deadlock while >> doing heavy random I/Os in my rbd / kvm. >> >> All processes hang in btrfs_commit_transaction or >> btrfs_commit_transaction_async > > We haven't seen this yet. See my other reply; a task dump may offer some > clues. You can find the task dump here: http://pastebin.com/raw.php?i=R4pztDRt Stefan