This bug was fixed in the package grub2 - 2.02~beta2-36ubuntu3.6
---------------
grub2 (2.02~beta2-36ubuntu3.6) xenial; urgency=medium
* Fix support for IPv6 PXE booting under UEFI: (LP: #1229458)
- grub_add_grub_env_set_net_property.patch: add grub_env_set_net_property.
- misc-fix-invalid-char-strtol.patch: fix strto*l methods invalid chars.
- net_read_bracketed_ipv6_addr.patch: read bracketed IPv6 addresses.
- bootp_new_net_bootp6_command.patch: add new bootp6 commands.
- efinet_uefi_ipv6_pxe_support.patch: teach efinet to allow bootp6.
- bootp_process_dhcpack_http_boot.patch: process DHCPACK, support HTTP.
- efinet_set_network_from_uefi_devpath.patch: configure network from the
devpath provided by the UEFI firmware.
- efinet_set_dns_from_uefi_proto.patch: set DNS nameservers and search
domains from the UEFI protocol.
* Fix booting on Hyper-V gen 2 VMs due to the lack of PIT there; we can deal
with this by using other timers when PIT aren't available. (LP: #1519836)
- debian/patches/git_tsc_use_alt_delay_sources_d43a5ee6.patch
- debian/patches/git_split_pmtimer_wait_tsc_d9a3bfea.patch
- debian/patches/git_fix_tsc_calibration_pit_a03c1034.patch
grub2 (2.02~beta2-36ubuntu3.3) xenial; urgency=medium
* debian/patches/ip6_send_router_solicitation_7c4b6b7b.patch: handle long
RA intervals by explicitly sending a SOLICIT.
* debian/patches/ip6_fix_routing_eb9f401f.patch: fix IPv6 routing; we should
be able to talk to things outside of link-local addresses; to do this,
allow specifying a gateway and interface. (LP: #1229458)
-- Mathieu Trudel-Lapierre <[email protected]> Thu, 15 Sep 2016
13:56:55 -0400
** Changed in: grub2 (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1519836
Title:
MaaS fails to boot Hyper-V Generation 2 virtual machines
Status in MAAS:
Invalid
Status in grub2 package in Ubuntu:
Fix Released
Status in grub2-signed package in Ubuntu:
Fix Released
Status in grub2 source package in Xenial:
Fix Released
Status in grub2-signed source package in Xenial:
Fix Released
Bug description:
[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
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