From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <539587BA.3040500@redhat.com> Date: Mon, 09 Jun 2014 12:08:58 +0200 From: Marian Csontos MIME-Version: 1.0 References: <53924E22.60403@mooluv.com> <53958348.3000501@redhat.com> In-Reply-To: <53958348.3000501@redhat.com> Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] lvm Bug? - bad reaction to snapshot creation Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: LVM general discussion and development , me@mooluv.com On 06/09/2014 11:50 AM, Zdenek Kabelac wrote: > Dne 7.6.2014 01:26, Leeman Strout napsal(a): >> >> Creating a snapshot throws an error "Attempted to decrement suspended >> device >> counter below zero." but succeeds. Removing the snapshot fails, >> attempting a >> 2nd time succeeds. Somewhere in this process the original LV gets >> locked and >> the system needs to be restarted to unlock it. As explained below this >> happens intermittently but regularly. >> >> >> Any additional info please let me know directly, I am not a subscriber, > > > Hi > > > Unsure if this relates to all your problem (since I'm not sure how arch > linux > is in sync with udev rules & systemd version) > > At certain moment systemd added a new 'feature' about locking devices > while > updating internal udev state - this locking ignores any udev rule flags > and opens internal lvm2 devices - so while for now it's been again > disabled for 'dm' devices - you might have installed version of system > which has the 'lock everything' feature in? > > Thought this doesn't explain your 'counter below zero' error - this > looks like > some incorrect udev rules are running in the field ? > (Or maybe multiple systemd-udevd are running ?) There is also a recent BZ against RHEL7: https://bugzilla.redhat.com/show_bug.cgi?id=1105732 What are the devices used in the stack? -- Martian > > Zdenek > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/