Are you using direct-lvm or loop-lvm? Red Hat definitely considers devicemapper with direct-lvm to be production ready and we're keen to fix any issues you find with that setup. If your kernel panic was with direct-lvm a bug would be great; the backtrace, kernel version, and device-mapper-libs version should be enough to get us somewhere.
If you need to configure direct-lvm and you're using RHEL/Centos packages you should have docker-storage-setup see this bit of documentation in the pre-requisites section https://docs.openshift.org/latest/install_config/install/prerequisites.html#configuring-docker-storage If you're not using centos/rhel packages give this a try, I've not followed this myself but it looks sane https://docs.docker.com/engine/userguide/storagedriver/device-mapper-driver/#configure-direct-lvm-mode-for-production On Wed, Feb 10, 2016 at 11:09 AM, Philippe Lafoucrière <philippe.lafoucri...@tech-angels.com> wrote: > Hi, > > We have encounter a big issue with our cluster: We tried to run a graylog > server for a client inside a pod. The image graylog2/allinone seemed to be > (almost) perfect for that (see my post "Replica ID in env" in the dev > mailing-list). > After a few minutes, graylog stopped to processing messages. After a > discussion with their dev team, it appeared devicemapper was the source of > the problem. > We tried to increase the log level on graylog, and it generated even more > I/O, resulting in ... nodes kernel panic. > We are evaluating the possibility of using btrfs or overlay instead. > > Be careful with the ansible playbook, devicemapper is the default storage > driver on redhat oses, and it's considered NOT ready for production > (https://docs.docker.com/engine/userguide/storagedriver/selectadriver/). I > can confirm that today... > > > Cheers > Philippe > > _______________________________________________ > users mailing list > users@lists.openshift.redhat.com > http://lists.openshift.redhat.com/openshiftmm/listinfo/users > _______________________________________________ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users
