Netboot improvements backport from hirsute
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| grub2 (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
| Focal |
Fix Released
|
Undecided
|
Unassigned | ||
| Groovy |
Fix Released
|
Undecided
|
Unassigned | ||
| Hirsute |
Fix Released
|
Undecided
|
Unassigned | ||
Bug Description
[Impact]
* There have been multiple reports on netboot failures using grubnetx64.efi. This backport attempts to cherrypick multiple patches to improve the netboot speed and hopefully reliability. Also timeouts.
TCP window scaling is improved for faster data transfers.
Support for larger link layer addresses is added.
tsc-calibration is sped up - as it can take up to 51s currently for grub to fail to calibrate on some hardware configurations.
All of the above should not break network boot deployments, and hopefully make them more reliable. Reliability of deployments is yet to be determined however.
[Test Case]
Let's ensure that network stack and network deployments still operate correctly.
* Deploy MAAS
* In /var/snap/
* Replace it with the /usr/lib/
* Deploy a UEFI machine with MAAS
* Observe that deployment is successful.
[Where problems could occur]
* The networking code in grub is changed, thus issues could happen in the network deployments of grub over pxe-boot / uefi-boot and similar. For example some machines/cards may have started to work (and previously didn't, and ended up booting off local drive) or stopped to work (thus failing to boot remotely).
[Other Info]
* These changes have been tested in MAAS on x86 UEFI already using the hirsute build of grub2.
| description: | updated |
| Changed in grub2 (Ubuntu Hirsute): | |
| status: | New → Fix Released |
| Changed in grub2 (Ubuntu Focal): | |
| status: | New → In Progress |
| description: | updated |
| Łukasz Zemczak (sil2100) wrote Please test proposed package | #1 |
| Changed in grub2 (Ubuntu Groovy): | |
| status: | New → Fix Committed |
| tags: | added: verification-needed verification-needed-groovy |
| Changed in grub2 (Ubuntu Focal): | |
| status: | In Progress → Fix Committed |
| Łukasz Zemczak (sil2100) wrote | #2 |
| tags: | added: verification-needed-focal |
| Ubuntu SRU Bot (ubuntu-sru-bot) wrote Autopkgtest regression report (grub2/2.04-1ubuntu26.8) | #3 |
| Dimitri John Ledkov (xnox) wrote | #4 |
| tags: |
added: verification-done-focal removed: verification-needed-focal |
| Ubuntu SRU Bot (ubuntu-sru-bot) wrote Autopkgtest regression report (grub2/2.04-1ubuntu35.2) | #5 |
| Dimitri John Ledkov (xnox) wrote | #6 |
| tags: |
added: verification-done verification-done-groovy removed: verification-needed verification-needed-groovy |
| Launchpad Janitor (janitor) wrote | #7 |
| Changed in grub2 (Ubuntu Groovy): | |
| status: | Fix Committed → Fix Released |
| Łukasz Zemczak (sil2100) wrote Update Released | #8 |
| Launchpad Janitor (janitor) wrote | #9 |
| Changed in grub2 (Ubuntu Focal): | |
| status: | Fix Committed → Fix Released |
Hello Dimitri, or anyone else affected,
Accepted grub2 into groovy-proposed. The package will build now and be available at https:/
Please help us by testing this new package. See https:/
If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-
Further information regarding the verification process can be found at https:/
N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.