can't define domain - error: cannot open /dev/null: Operation not permitted

Hi, i have a two-node cluster running on SLES 12 with pacemaker. The cluster refused to start the domains on one node. So i took some of the domains out of the cluster and tried to start it manually. This is what happened: virsh # define /mnt/share/vm_documents-oo.xml error: Failed to define domain from /mnt/share/vm_documents-oo.xml error: cannot open /dev/null: Operation not permitted Same with another domain. On the other node domains are defined and started without problems. Permissions on /dev and /dev/null are the same: ha-idg-1:/mnt/share # ll -d /dev drwxr-xr-x 25 root root 5420 Sep 17 20:47 /dev ha-idg-1:/mnt/share # ll /dev/null crw-rw-rw- 1 root root 1, 3 Aug 24 14:39 /dev/null ha-idg-2:/mnt/share # ll -d /dev drwxr-xr-x 25 root root 5340 Sep 9 10:31 /dev ha-idg-2:/mnt/share # ll /dev/null crw-rw-rw- 1 root root 1, 3 Aug 24 15:48 /dev/null ha-idg-1 is the one causing trouble. Both systems SLES 12 SP4, same patchlevel. livirt is: ha-idg-1:/mnt/share # rpm -qa|grep -i libvirt libvirt-daemon-driver-storage-iscsi-4.0.0-8.15.2.x86_64 libvirt-libs-4.0.0-8.15.2.x86_64 python-libvirt-python-4.0.0-2.34.x86_64 libvirt-daemon-driver-nwfilter-4.0.0-8.15.2.x86_64 libvirt-glib-1_0-0-0.2.1-1.2.x86_64 typelib-1_0-LibvirtGLib-1_0-0.2.1-1.2.x86_64 libvirt-admin-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-core-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-scsi-4.0.0-8.15.2.x86_64 libvirt-client-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-nodedev-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-logical-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-qemu-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-secret-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-rbd-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-interface-4.0.0-8.15.2.x86_64 libvirt-daemon-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-network-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-mpath-4.0.0-8.15.2.x86_64 libvirt-daemon-qemu-4.0.0-8.15.2.x86_64 libvirt-daemon-config-network-4.0.0-8.15.2.x86_64 libvirt-daemon-driver-storage-disk-4.0.0-8.15.2.x86_64 Any ideas ? Maybe a restart would help, but it's Linux, not Windows ... I'd like to understand what's going wrong. Thanks. Bernd -- Bernd Lentes Systemadministration Institute for Metabolism and Cell Death (MCD) Building 25 - office 122 HelmholtzZentrum München bernd.lentes(a)helmholtz-muenchen.de phone: +49 89 3187 1241 phone: +49 89 3187 3827 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/mcd stay healthy Helmholtz Zentrum München Helmholtz Zentrum München