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



On Sun, Sep 20, 2020 at 01:09:51PM +0200, Lentes, Bernd wrote:
Hi,


Hi, I'll start with the usual...

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.


What does the XML look like?  What do the logs[0] say?

On the other node domains are defined and started without problems.

Are the configs (libvirtd.conf and qemu.conf) the same on both nodes?

Have a nice day,
Martin

[0] https://libvirt.org/kbase/debuglogs.html

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 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


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