From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:52436 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754581AbaGVQr1 (ORCPT ); Tue, 22 Jul 2014 12:47:27 -0400 Date: Tue, 22 Jul 2014 09:46:46 -0700 From: Marc MERLIN To: Chris Mason Cc: Martin Steigerwald , Cody P Schafer , Chris Samuel , linux-btrfs@vger.kernel.org Subject: Re: Blocked tasks on 3.15.1 Message-ID: <20140722164646.GB27916@merlins.org> References: <52e3cfababa49919100759860b59aa7c@admin.virtall.com> <53C7CD0F.7070603@fb.com> <1745216.hDa4tC2HJJ@merkaba> <53CE7ACF.7070109@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <53CE7ACF.7070109@fb.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Jul 22, 2014 at 10:53:03AM -0400, Chris Mason wrote: > Thanks for the help in tracking this down everyone. We'll get there! > Are you all running multi-disk systems (from a btrfs POV, more than one > device?) I don't care how many physical drives this maps to, just does > btrfs think there's more than one drive. In the bugs I sent you, it was a mix of arrays that were mdraid / dmcrypt / btrfs I have also one array with: disk1 / dmcrypt \ - btrfs (2 drives visible by btrfs) disk2 / dmcrypt / The multidrive setup seemed a bit worse, I just destroyed it and went back to putting all the drives together with mdadm and showing a single dmcrypted device to btrfs. But that is still super unstable on my server with 3.15, while being somewhat usable with my laptop (it still hangs, but more rarely) The one difference is that my laptop actually does disk > dmcrypt > btrfs while my server does disks > mdadm > dmcrypt > btrfs Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 1024R/763BE901