From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: util-linux-owner@vger.kernel.org Received: from mx3-rdu2.redhat.com ([66.187.233.73]:50778 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751211AbeCIVq0 (ORCPT ); Fri, 9 Mar 2018 16:46:26 -0500 Date: Fri, 9 Mar 2018 22:46:22 +0100 From: Karel Zak To: Ruediger Meier Cc: util-linux@vger.kernel.org Subject: Re: debug parallel root checks Message-ID: <20180309214622.fys7a24fkiiyvrxa@ws.net.home> References: <201803091547.40271.sweet_f_a@gmx.de> <201803091606.08473.sweet_f_a@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <201803091606.08473.sweet_f_a@gmx.de> Sender: util-linux-owner@vger.kernel.org List-ID: On Fri, Mar 09, 2018 at 04:06:08PM +0100, Ruediger Meier wrote: > On Friday 09 March 2018, Ruediger Meier wrote: > > Hi, > > > > Our parallel root checks look already nice on the first view. > > On the second view they fail the stress test, at least on my > > system. > > Just an arbitrary example. Sometimes I get this failure > > $ cat tests/diff/mount/uuid > --- /tmp/ul2/tests/expected/mount/uuid 2018-03-09 11:04:54.992654305 +0100 > +++ /tmp/ul2/tests/output/mount/uuid 2018-03-09 15:55:00.168028810 +0100 > @@ -1 +1,2 @@ > -Success > +mount: /tmp/ul2/tests/output/mount/uuid-mnt: can't find UUID="f102445a-f6f3-4657-bc58-81ff164fc0d9". > +A) Cannot find /dev/loop10 in /proc/mounts > > > So mount can't find that UUID although it was found before by > ts_uuid_by_devname, i.e. by blkid(1). > > What could be the problem: > - another test thread removed the UUID > - invalid blkid cache > - a bug? We do not use blkid cache, it should be based on udev symmlinks. The symlinks are not ready yet. I guess sleep() or so fixed the problem. Karel -- Karel Zak http://karelzak.blogspot.com