** Changed in: grub2 (Ubuntu Xenial)
Status: New => In Progress
** Changed in: grub2-signed (Ubuntu Xenial)
Status: New => In Progress
** Changed in: grub2 (Ubuntu Xenial)
Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)
** Changed in: grub2-signed (Ubuntu Xenial)
Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)
** Description changed:
- When trying to deploy a "Generation 2" virtual machine on Hyper-V, grub
- fails to fetch the linux kernel and initrd from MaaS. The operation
- times out immediately, because the Generation 2 VMs are missing the
- Programmable Interval Timer (PIT). The current version of grub still
- requires this interface to exist, in order to calculate time.
+ [Impact]
+ When trying to deploy a "Generation 2" virtual machine on Hyper-V, grub fails
to fetch the linux kernel and initrd from MaaS. The operation times out
immediately, because the Generation 2 VMs are missing the Programmable Interval
Timer (PIT). The current version of grub still requires this interface to
exist, in order to calculate time.
+
+ [Test case]
+ Attempt to boot a Generation 2 Hyper-V system from MAAS.
+
+ [Regression potential]
+ Since this changes the way timers are picked and used in grub, this may cause
things depending on timers (timeout for various features, timeout for the GRUB
menu, waiting for keyboard input to get in the menu) may be affected. Any wrong
behavior in keyboard input validation for getting into the grub menu on boot
should be considered a regression on this patch.
+
+ ---
There is a patch that uses the EFI SetTimer() available here:
http://savannah.gnu.org/bugs/?42944
and an alternative in the discussion here:
https://lists.gnu.org/archive/html/grub-devel/2014-10/msg00016.html
that uses pmtimer instead. I am aware that grub is a critical package.
What is the official/proper way to fix this issue? Can a patched
grubnetx64.efi be packaged with MaaS? Do we have to wait for this fix to
merge?
Gabriel
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1519836
Title:
MaaS fails to boot Hyper-V Generation 2 virtual machines
To manage notifications about this bug go to:
https://bugs.launchpad.net/maas/+bug/1519836/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
