[Bug 1521612] Re: Continued TFTP timeouts when PXE booting via grub

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 2.02~beta2-22ubuntu1.5

---------------
grub2 (2.02~beta2-22ubuntu1.5) vivid; urgency=medium

  * Merge in changes from  2.02~beta2-22ubuntu1.3:
    - d/p/arm64-set-correct-length-of-device-path-end-entry.patch: Fixes
      booting arm64 kernels on certain UEFI implementations. (LP: #1476882)
    - progress: avoid NULL dereference for net files. (LP: #1459872)
    - arm64/setjmp: Add missing license macro. (LP: #1459871)
    - Cherry-pick patch to add SAS disks to the device list from the ofdisk
      module. (LP: #1517586)
    - Cherry-pick patch to open Simple Network Protocol exclusively.
      (LP: #1508893)
  * Cherry-picks to better handle TFTP timeouts on some arches: (LP: #1521612)
    - (7b386b7) efidisk: move device path helpers in core for efinet
    - (c52ae40) efinet: skip virtual IP devices when enumerating cards
    - (f348aee) efinet: enable hardware filters when opening interface
  * Update quick boot logic to handle abstractions for which there is no
    write support. (LP: #1274320)

 -- dann frazier <dannf at ubuntu.com>  Wed, 16 Dec 2015 13:31:15 -0700

** Changed in: grub2 (Ubuntu Vivid)
       Status: Fix Committed => Fix Released

** Changed in: grub2-signed (Ubuntu Vivid)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1521612

Title:
  Continued TFTP timeouts when PXE booting via grub

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2-signed package in Ubuntu:
  Fix Released
Status in grub2 source package in Trusty:
  Fix Released
Status in grub2-signed source package in Trusty:
  Fix Released
Status in grub2 source package in Vivid:
  Fix Released
Status in grub2-signed source package in Vivid:
  Fix Released
Status in grub2 source package in Wily:
  Fix Released
Status in grub2-signed source package in Wily:
  Fix Released
Status in grub2 source package in Xenial:
  Fix Released
Status in grub2-signed source package in Xenial:
  Fix Released

Bug description:
  [Impact]
  While the Grub2 patches described in LP#1508893 reduce the TFTP time-out, HP ProLiant m400 servers when booting via UEFI, may still experience TFTP timeouts.

  [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 packet retries, and it can take on the order of minutes to begin running the kernel.

  [Regression Risk]
  The fix is restricted to UEFI-based systems.

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