Regression in backup-and-restore patch.

[Dimitri John Ledkov]

[Impact]

 * A regression was identified in the backup & restore patch on some architectures, which results in garbage filenames to be created in /boot/grub.

The issue is reported on linux-ext4 mailing list https://marc.info/?l=linux-ext4&m=160709231522785&w=2

[Test Case]

 * Execute grub-install --target pc-i386 on i386 machine against a nonexistent drive. Such that, backup & restore is triggered.

 * Observe that the restored modules names in /boot/grub do not have garbage file endings.

[Where problems could occur]

 * The generated garbage file endings will remain on disk across future upgrade and will need to be cleaned up manually. I am pondering if I can clean them up somehow automatically. However the scope of the affected machines should be very small and limited to i386.

[Other Info]

 * Reported on linux-ext4 mailing list & debugged by / patch provided by colin watson.

[Launchpad Janitor (janitor)]

This bug was fixed in the package grub2 - 2.04-1ubuntu37

---------------
grub2 (2.04-1ubuntu37) hirsute; urgency=medium

  * debian/patches/grub-install-backup-and-restore.patch: Fix-up the patch
    to correctly initialyze the names of the modules to restore. LP:
    #1907085
  * 10_linux: emit messages when initrdless boot is configured, attempted
    and fails triggering fallback. LP: #1901553
  * grub-common.service: port init.d script to systemd unit. Add warning
    message, when initrdless boot fails triggering fallback. LP: #1901553
  * debian/rules: undo po/ directory patching in
    override_dh_autoreconf_clean.
  * minilzo: built using the distribution's minilzo
  * ubuntu-fix-reproducible-squashfs-test.patch: fix squashfs-test with
    new squashfs-tools in hirsute.
  * rhboot-f34-make-exit-take-a-return-code.patch,
    rhboot-f34-dont-use-int-for-efi-status.patch: allow grub to exit
    non-zero under EFI, this should allow falling back to the next
    BootOrder BootEntry.
  * rhboot-f34-tcp-add-window-scaling-support.patch: speed up netboot
    transfer speed.
  * rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet-2.patch:
    add support for link layer addresses of up to 32-bytes.
  * rhboot-f34-make-pmtimer-tsc-calibration-fast.patch:
    speed up calibration time, especially when booting VMs.

 -- Dimitri John Ledkov <email address hidden> Sat, 12 Dec 2020 00:50:47 +0000

[Łukasz Zemczak (sil2100)]

Hello Dimitri, or anyone else affected,

Accepted grub2 into groovy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/grub2/2.04-1ubuntu35.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

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-needed-groovy to verification-done-groovy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-groovy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

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.

[Łukasz Zemczak (sil2100)]

Hello Dimitri, or anyone else affected,

Accepted grub2 into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/grub2/2.04-1ubuntu26.8 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

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-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

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.

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted grub2 (2.04-1ubuntu26.8) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

ubuntu-image/1.10+20.04ubuntu1 (s390x, ppc64el, amd64, armhf, arm64)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#grub2

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Dimitri John Ledkov (xnox)]

The reproducer for this fix is using i386 builds of grub-install, which we do not provide.

Thus in practice this is verification-done. If very desired, one could by hand rebuild grub-install tooling as an i386 binary to try to run it on older releases.

[Dimitri John Ledkov (xnox)]

no stray backup files detected whilst performing validation of the other bugs.

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted grub2 (2.04-1ubuntu35.2) for groovy have finished running.
The following regressions have been reported in tests triggered by the package:

zsys/unknown (amd64)
grubzfs-testsuite/unknown (amd64)
ubiquity/unknown (amd64)
grml2usb/unknown (amd64)
ubuntu-image/unknown (amd64)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/groovy/update_excuses.html#grub2

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package grub2 - 2.04-1ubuntu35.2

---------------
grub2 (2.04-1ubuntu35.2) groovy; urgency=medium

  * debian/patches/grub-install-backup-and-restore.patch: Fix-up the patch
    to correctly initialyze the names of the modules to restore. LP:
    #1907085
  * rhboot-f34-make-exit-take-a-return-code.patch,
    rhboot-f34-dont-use-int-for-efi-status.patch: allow grub to exit
    non-zero under EFI, this should allow falling back to the next
    BootOrder BootEntry. LP: #1865515
  * rhboot-f34-tcp-add-window-scaling-support.patch: speed up netboot
    transfer speed. LP: #1911439
  * rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet-2.patch:
    add support for link layer addresses of up to 32-bytes. LP: #1911439
  * rhboot-f34-make-pmtimer-tsc-calibration-fast.patch:
    speed up calibration time, especially when booting VMs. LP: #1911439
  * minilzo: built using the distribution's minilzo. LP: #1911440

 -- Dimitri John Ledkov <email address hidden> Thu, 14 Jan 2021 12:30:56 +0000

[Łukasz Zemczak (sil2100)]

The verification of the Stable Release Update for grub2 has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package grub2 - 2.04-1ubuntu26.8

---------------
grub2 (2.04-1ubuntu26.8) focal; urgency=medium

  * debian/patches/grub-install-backup-and-restore.patch: Fix-up the patch
    to correctly initialyze the names of the modules to restore. LP:
    #1907085
  * rhboot-f34-make-exit-take-a-return-code.patch,
    rhboot-f34-dont-use-int-for-efi-status.patch: allow grub to exit
    non-zero under EFI, this should allow falling back to the next
    BootOrder BootEntry. LP: #1865515
  * rhboot-f34-tcp-add-window-scaling-support.patch: speed up netboot
    transfer speed. LP: #1911439
  * rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet.patch,
    ubuntu-fixup-rhboot-f34-support-non-ethernet-2.patch:
    add support for link layer addresses of up to 32-bytes. LP: #1911439
  * rhboot-f34-make-pmtimer-tsc-calibration-fast.patch:
    speed up calibration time, especially when booting VMs. LP: #1911439
  * minilzo: built using the distribution's minilzo. LP: #1911440

 -- Dimitri John Ledkov <email address hidden> Wed, 13 Jan 2021 14:12:38 +0000