From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zdenek Kabelac Subject: Re: Unable to deactivate lv, pehaps due to semaphore problem... Date: Thu, 27 Nov 2014 15:33:05 +0100 Message-ID: <54773621.5090301@redhat.com> References: Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids Dne 27.11.2014 v 15:26 Gianluca Cecchi napsal(a): > Hello, > I'm unable to deactivate an lvm. > > My system is RHEL 6.5 with lvm2-2.02.100-8.el6.x86_64 and kernel > 2.6.32-431.29.2.el6.x86_64 > > I get error code 5 with message > Logical volume VG_AAA_TEMP/LV_AAA_TEMP in use. > > You can find output of > lvchange -d -d -d -d -d -d -an VG_AAA_TEMP/LV_AAA_TEMP > here: > https://drive.google.com/file/d/0BwoPbcrMv8mvTjlBMkRUbG9nczA/view?usp=sharing > Not really accessible. But anyway - if you have problem with 'semaphore' resouces - you could 'recycle' old ones - 'dmsetup udevcomplete_all' Of course it's hard to guess what experiments are you doing and would could lead to uncompleted cockies (stuck udev scans) Do you happen to have some suspend devices in your table ? (dmsetup info -c should show them) > [root@orapr2 ~]# lvs VG_AAA_TEMP/LV_AAA_TEMP > LV VG Attr LSize Pool Origin Data% Move Log > Cpy%Sync Convert > LV_AAA_TEMP VG_AAA_TEMP -wi-ao---- 1020.00m > > How can I see the responsible for the reference that apparently keeps it open? > > Open count: 1 > so I can check and eventually fix?? > dmsetup ls --tree is usually good in shows deps between devs (i.e. target A holds target B) Regards Zdenek