[libvirt-users] libvirt lxc /dev/null
Hello, I created lxc container on F19 with virt-manager and it starts OK. The only problem is that sshd does not run complaining "/dev/null is not a character device". # ls -l /dev/null -rw-r--r-- 1 root root 0 2014-02-25 22:39 /dev/null /sys/fs/cgroup/devices/machine/VM_NAME.libvirt-lxc/devices.list has "c 1:3 rwm" line, but I cannot create /dev/null: # mknod /dev/nulll c 1 3 mknod: `/dev/nulll': Operation not permitted Thanks, Nerijus
On Tue, Feb 25, 2014 at 08:58:43PM +0000, Nerijus Baliunas wrote:
Hello,
I created lxc container on F19 with virt-manager and it starts OK. The only problem is that sshd does not run complaining "/dev/null is not a character device". # ls -l /dev/null -rw-r--r-- 1 root root 0 2014-02-25 22:39 /dev/null
/sys/fs/cgroup/devices/machine/VM_NAME.libvirt-lxc/devices.list has "c 1:3 rwm" line, but I cannot create /dev/null: # mknod /dev/nulll c 1 3 mknod: `/dev/nulll': Operation not permitted
Libvirt will pre-populate the /dev filesystem with any permitted devices, creation is denied by cgroups. That you have a plain file for /dev/null suggests something in your container has deleted the original character device and replaced it by a plain file. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
Daniel P. Berrange <berrange@...> writes:
Libvirt will pre-populate the /dev filesystem with any permitted devices, creation is denied by cgroups.
That you have a plain file for /dev/null suggests something in your container has deleted the original character device and replaced it by a plain file.
Thank you. I removed udev package in the container and now /dev/null is OK. Regards, Nerijus
participants (2)
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Daniel P. Berrange -
Nerijus Baliunas