TFTP timeout when booting from grub that was PXE loaded
Bug #1508893 reported by
Raghuram Kota
This bug affects 4 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
grub2 (Ubuntu) |
Fix Released
|
High
|
dann frazier | ||
Trusty |
Fix Released
|
High
|
dann frazier | ||
Vivid |
Fix Released
|
High
|
dann frazier | ||
Wily |
Fix Released
|
High
|
dann frazier |
Bug Description
[Impact]
PXE booting of UEFI systems is very slow, to the point that some systems timeout.
[Test Case]
PXE boot a UEFI-based system (d-i or MAAS) and monitor the time it takes for GRUB to download the kernel/initrd. tcpdump will show TFTP timeouts, and it can take on the order of minutes to begin running the kernel.
[Regression Risk]
The fix is restricted to UEFI-based systems. For those systems, it could lead to a regression if Managed Network Protocol is required to remain active while GRUB is performing the network boot.
Related branches
summary: |
- TFTP timeout on ARM64 hw when booting from grub that was PXE loaded + TFTP timeout when booting from grub that was PXE loaded |
description: | updated |
Changed in grub2 (Ubuntu Wily): | |
assignee: | nobody → dann frazier (dannf) |
Changed in grub2 (Ubuntu Vivid): | |
assignee: | nobody → dann frazier (dannf) |
Changed in grub2 (Ubuntu Trusty): | |
assignee: | nobody → dann frazier (dannf) |
Changed in grub2 (Ubuntu): | |
importance: | Undecided → High |
Changed in grub2 (Ubuntu Trusty): | |
importance: | Undecided → High |
Changed in grub2 (Ubuntu Vivid): | |
importance: | Undecided → High |
Changed in grub2 (Ubuntu Wily): | |
importance: | Undecided → High |
Changed in grub2 (Ubuntu Trusty): | |
status: | New → In Progress |
Changed in grub2 (Ubuntu Wily): | |
status: | New → In Progress |
Changed in grub2 (Ubuntu Vivid): | |
status: | New → In Progress |
Changed in grub2 (Ubuntu): | |
status: | Confirmed → In Progress |
assignee: | nobody → dann frazier (dannf) |
To post a comment you must log in.
Ming Lei has identified that this issue is fixed with the following upstream grub patch:
commit 49426e9fd2e562c 73a4f1206f32eff 9e424a1a73
Author: Andrei Borzenkov <email address hidden>
Date: Thu May 7 20:37:17 2015 +0300
efinet: open Simple Network Protocol exclusively
The next step is to backport this patch into Wily and probably also Trusty.