From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.wl.linuxfoundation.org ([198.145.29.98]:50796 "EHLO mail.wl.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725880AbeIFKNA (ORCPT ); Thu, 6 Sep 2018 06:13:00 -0400 Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6AF392A370 for ; Thu, 6 Sep 2018 05:39:17 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 200981] hypervisor fs hangs at heavy write activity on VM (kvm, qcow2 image) having a reflink disk copy Date: Thu, 06 Sep 2018 05:39:18 +0000 Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=200981 --- Comment #7 from Alexander Y. Fomichev (git.user@gmail.com) --- Ok, it looks like a warning is a result of missing sb_end_intwrite in xfs_reflink_allocate_cow, namely in a sequence xfs_trans_alloc -> goto retry -> goto convert. With proof-of-concept patch (attached) warning is gone but deadlock is not. Though now I have a list of held locks (dmesg attached). Did you mean taintad kernel will not show locks held? -- You are receiving this mail because: You are watching the assignee of the bug.