On Mon, Apr 28, 2014 at 5:07 PM, Lennart Poettering <[email protected]> wrote: > On Sat, 26.04.14 15:35, Ruben Kerkhof ([email protected]) wrote: > >> Hi list, >> >> I was just playing with systemd-nspawn, and noticed that when I start a >> container in a virtual machine running on KVM, >> it gets the same machine-id as the vm itself, resulting in: >> Host and machine ids are equal (4c93d957bcf44b289c3e4edb5bd5c355): refusing >> to link journals >> >> Is this by design, or is this a bug? > > How did you create the container tree? Did you copy the host's root into > a subdirectory? Note that you need to make sure that /etc/machine-id is > unique. When you copy the same image into multiple directories you hence > need to regenerate the machine-id.
I used pacstrap on Arch to create the tree, as described in https://wiki.archlinux.org/index.php/Arch_systemd_container After running 'pacstrap -i -c -d ~/testcontainer base' ~/testcontainer/etc/machine-id is indeed a copy of /etc/machine-id on the host. I'm not sure how it gets there yet, looking into it... > > Alternatively, remove the file in the container, as it will then create > a new machine id on boot automatically, and store in the file. Tried that, it does generate a machine-id, but the same one as on the host. [ruben@vm ~]$ sudo rm testcontainer/etc/machine-id [ruben@vm ~]$ sudo systemd-nspawn -bD ~/testcontainer And on the third line, the boot output shows: Initializing machine ID from KVM UUID. Looking at the code in machine-id-setup.c:generate, it seems that it first checks if we're running in a kvm vm, and only if that's not the case, if we're running in a container. > > Lennart Kind regards, Ruben _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
