From: Theodore Ts'o Subject: Re: Ext4 deadlock (+lockdep splat) during rsync Date: Mon, 9 Jan 2017 22:40:50 -0500 Message-ID: <20170110034050.do5q5d4feuqqhgj3@thunk.org> References: <20170108224114.27157.qmail@ns.sciencehorizons.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: George Spelvin Return-path: Received: from imap.thunk.org ([74.207.234.97]:56696 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755084AbdAJDkw (ORCPT ); Mon, 9 Jan 2017 22:40:52 -0500 Content-Disposition: inline In-Reply-To: <20170108224114.27157.qmail@ns.sciencehorizons.net> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Sun, Jan 08, 2017 at 05:41:14PM -0500, George Spelvin wrote: > After replacing a drive in a RAID array, I tried to bring some things > up to date with rsync and ran into an annoyingly repeatable deadlock. Thanks for the bug report! I'm able to reproduce this, so it's a matter of my tracking down the bug. In the meantime, do you need a workaround? If you're not using the new project quota feature, I can send you a quick patch to disable attempts to move the extended attributes to resereve space for the project ID --- this is what is causing the deadlock. - Ted