From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gabriel de Perthuis Subject: Re: label devices got removed after format Date: Fri, 12 Jul 2013 10:33:37 +0000 (UTC) Message-ID: References: <51DE7E3A.5070709@profihost.ag> <20130712012806.GB17799@kmo-pixel> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: Sender: linux-bcache-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-bcache@vger.kernel.org On Thu, 11 Jul 2013 18:28:06 -0700, Kent Overstreet wrote: > On Thu, Jul 11, 2013 at 11:43:22AM +0200, Stefan Priebe - Profihost AG wrote: >> Hi, >> >> after doing mkfs.xfs -f /dev/bcache/by-label/mybcachelabel >> >> /dev/bcache/by-label/mybcachelabel gots removed... >> >> Only a reboot brings it back. >> >> Stefan > > Gabriel - I bet the uevent bcache is emitting is conflicting with the > name of an existing label uevent; there'll be a symlink for the > filesystem's label - for the same block device - so the mkfs could be > causing another uevent to be emitted overwriting our label. The uevent property is CACHED_LABEL, a name that shouldn't interfere with the cached device's filesystem label. > Or maybe the conflict is a bit more subtle - anyways, you added the > label uevent code, think you might be able to figure it out? I actually can't reproduce this; the link doesn't disappear.