Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter

Ben Hutchings ben at decadent.org.uk
Thu Sep 7 15:49:52 BST 2017

On Thu, 2017-09-07 at 12:53 +0200, Raphael Hertzog wrote:
> On Thu, 07 Sep 2017, Raphael Hertzog wrote:
> > What informs udev about the new filesystem?
> Somehow, it's the kernel apparently.
> > Or is this a bug in the kernel really?
> At least "udevadm monitor" shows that the kernel is sending
> less uevents when I run the command in the chroot.

Which command?


> I attach
> two logs of "udevadm monitor -k -u -p", once for the run in
> the host, and one for the run in schroot.
> And I also attach a diff of edited logs where I dropped the
> timestamps. We can clearly see the lack of a "KERNEL[] change
> /devices/virtual/block/dm-4 (block)" with its associated
> UDEV rule adding the by-uuid links.
> So this is with 4.12.6-1 (unstable).

Ben Hutchings
Time is nature's way of making sure that everything doesn't happen at

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