[Bug 1519836] Re: MaaS fails to boot Hyper-V Generation 2 virtual machines
mathieu.tl at gmail.com
Mon May 16 22:33:24 UTC 2016
I uploaded grub2 with three patches relating to timers in EFI (do either
PIT, or pmtimer, and if all else fails, EFI Stall()). I expect it should
fix the issues on Hyper-V, could you please test it once it's available?
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MaaS fails to boot Hyper-V Generation 2 virtual machines
Status in MAAS:
Status in grub2 package in Ubuntu:
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
There is a patch that uses the EFI SetTimer() available here:
and an alternative in the discussion here:
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
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