[systemd-devel] dev-root.device is not active, results in an umount spree
lennart at poettering.net
Wed May 13 05:43:49 PDT 2015
On Wed, 13.05.15 12:48, Dimitri John Ledkov (dimitri.j.ledkov at intel.com) wrote:
> I am booting without initramfs, using a plan9 filesystem as rootfs in a kvm.
> Thus my /proc/cmdline has:
> root=/dev/root rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p
> # mount
> /dev/root on / type 9p
> Yet, dev-root.device is dead:
> # systemctl status dev-root.device
> ● dev-root.device
> Loaded: loaded
> Active: inactive (dead)
Yeah, this /dev/root thing is really weird in the kernel. It's not an
actual device, it's just a weird string. We probably should filter it
out entirely, and never ever generate a unit dependency for it.
Please check if this fixes things for you:
That said, I figure you should backport
628c89cc68ab96fce2de7ebba5933725d147aecc and friends to your tree,
which should also make this problem go away for you.
> I am planning to locally patch mount_add_device_links to skip if what
> is "/dev/root", to avoid a call to unit_add_node_link... But I'm not
> sure if this is the right thing to do or not.
It is, it's the change I made now, too.
Lennart Poettering, Red Hat
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