Hello Zdenek, Thank you very much for your prompt reply. I am running RH 7.2 with the latest RH kernel update and LVM2 that came out with recent RH update. This issue is 100% reproducible, if you want I can setup a debugging session where you could access my server and take a look at the issue. BTW running this 'dmsetup udevcomplete_all' command did not help me and it cannot be a permanent fix. Please let me know if you are ok for live debugging. Thank you Serguei -----Original Message----- From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Zdenek Kabelac Sent: Tuesday, March 15, 2016 6:56 PM To: linux-lvm@redhat.com Subject: Re: disabling udev_sync and udev_rules Dne 15.3.2016 v 23:31 Serguei Bezverkhi (sbezverk) napsal(a): > Hello folks, > > While trying to make lvm work within a docker container I came across an issue when all lvcreate/lvremove got stuck indefinetly or until control-c. When I checked process I noticed lvm was waiting on one semaphore, I found that other folks hit similar issue and they fixed it by setting udev_sync and udev_rules to 0. It also helped my case too. > > I would greatly appreciate if you could share your thought if this change in future can potentially have any negative impact. > > Thank you Hi To 'unblock' stuck processes waiting on udev cookie - you could run: 'dmsetup udevcomplete_all' However the key question is - how you could get stuck. That may need further debugging. You would need to expose your OS version and also version of lvm2 in use. Non working cookies are bad - and disabling udev sync is even more bad idea... Regards 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/ _______________________________________________ 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/
