From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=DKIM_ADSP_ALL,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3C16C33CB1 for ; Sun, 19 Jan 2020 17:18:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 53DA820674 for ; Sun, 19 Jan 2020 17:18:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=wq.cz header.i=@wq.cz header.b="NTvmUQ7T"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=wq.cz header.i=@wq.cz header.b="IYdpoHPF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727766AbgASRRp (ORCPT ); Sun, 19 Jan 2020 12:17:45 -0500 Received: from srw1.wq.cz ([80.92.240.241]:37608 "EHLO srw1.wq.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727111AbgASRRp (ORCPT ); Sun, 19 Jan 2020 12:17:45 -0500 X-Greylist: delayed 1623 seconds by postgrey-1.27 at vger.kernel.org; Sun, 19 Jan 2020 12:17:45 EST DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=wq.cz; s=default; h=Content-Type:MIME-Version:Message-ID:Subject:To:From:Date:Sender :Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=dsx363sPKa04mZOjTOViTRoclhTrhKIB6YXGkUGA4ps=; b=NTvmUQ7T/x98J9bXgQQuM0XPKv 5mdDpkPP8SIhnjJfTKhChQ8hA5b0iLTs9GW8FmCBLqIcJnajgJppu+5chNiSD0J/3Y0PjBg22eL5P 4e42BmRyJa8KqOs4wdfv7RRhMJWRIiEfVy17hLjKa4h8CB1bCxumaEXhs9SpmNoxfz4E=; Received: from fw.wq.cz ([185.71.40.210] helo=msc.wq.cz) by srw1.wq.cz with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1itDmZ-0006rN-SM for kvm@vger.kernel.org; Sun, 19 Jan 2020 17:50:39 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=wq.cz; s=ntm; h=Content-Type:MIME-Version:Message-ID:Subject:To:From:Date:Sender: Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=dsx363sPKa04mZOjTOViTRoclhTrhKIB6YXGkUGA4ps=; b=IYdpoHPFnF+RXc3djw/8sTg+4h ZWirJoW73aLoEV3JNWmucD6J6kUrTh8dn4WRINXMpVweAd/5l/BV7duOtZYw/+t4FyK96gcFcUhxZ xdcZHylXAL36jPhzfMgWlW+ZEGOKGcbYjlyubiXVqc9g4ze7o1U+GlHhYQYkiR2y4ASI=; Received: from milon by msc.wq.cz with local (Exim 4.92) (envelope-from ) id 1itDmZ-0005nP-AG for kvm@vger.kernel.org; Sun, 19 Jan 2020 17:50:39 +0100 Date: Sun, 19 Jan 2020 17:50:39 +0100 From: Milan Kocian To: kvm@vger.kernel.org Subject: kvmtool: processes inside vm hang in D state Message-ID: <20200119165038.GD2878@msc.wq.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hello, I hope it's the right mailinglist, if not I apologize. I can see strange thing inside lkvm virtual machine. The processes stuck in the D state after some time (few days or few hours): root@testvm:~# ps ax | grep D PID TTY STAT TIME COMMAND 20 ? D 0:00 [kworker/u4:1+xfs-cil/vda1] 1072 ? D 0:00 [xfsaild/vda1] 3237 ? D 0:00 [kworker/0:1+xfs-sync/vda1] 3309 ? D 0:00 [kworker/u4:0+flush-254:0] 3461 pts/0 S+ 0:00 grep D After that the vm is unusable. I tested differrent filesystem, different distributions with the same result (latest kvmtool git: https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git) Is there any way how to debug it ? Many thanks. Best regards. Please cc me, I am not a member. -- Milan Kocian