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

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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. 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).

Cheers,
-- 
Raphaël Hertzog ◈ Debian Developer

Support Debian LTS: https://www.freexian.com/services/debian-lts.html
Learn to master Debian: https://debian-handbook.info/get/

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Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-07 12:20 +0200
  Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-07 13:00 +0200
    Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Ben Hutchings <ben@decadent.org.uk> - 2017-09-07 17:00 +0200
      Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-07 18:00 +0200
        Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Ben Hutchings <ben@decadent.org.uk> - 2017-09-11 21:10 +0200
          Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-11 21:50 +0200
            Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Ben Hutchings <ben@decadent.org.uk> - 2017-09-12 01:20 +0200
              Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-12 09:40 +0200
  Bug#872999: qemu image built by vmdebootstrap is unbootable due to bad root=/dev/mapper/loop0p1 kernel parameter Raphael Hertzog <hertzog@debian.org> - 2017-09-07 16:00 +0200

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