[Bug 1958904] Update Released

[Brian Murray]

The verification of the Stable Release Update for initramfs-tools 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.

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https://bugs.launchpad.net/bugs/1958904

Title:
  autopkgtest is failing on jammy with "no space left on device"

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Bionic:
  Invalid
Status in initramfs-tools source package in Focal:
  Fix Released
Status in initramfs-tools source package in Impish:
  Fix Released

Bug description:
  [Impact]
  In debian/tests/prep-image we create an image file of 1GB, but recent jammy/focal cloud images are (barely) bigger than that, for example the current one uncompressed is 1001MB...

  Example of a test failure:
  https://autopkgtest.ubuntu.com/results/autopkgtest-jammy/jammy/amd64/i/initramfs-tools/20220126_160323_8bcd1@/log.gz

  Maybe we should consider to create image files of 2GB or even bigger,
  considering that we are only going to allocate the space that is
  actually needed, because we create the file using truncate.

  [Test Plan]
  Run autotestpkg tests from initramfs-tools package. The "net" test is the one that depends on the image created by 'prep-image'. The testcase should complete successfully without the temporary image running out of space.

  [Where problems could occur]
  The creation of a larger image for the tests could fail if the filesystem of the test system is low on disk space. However, as mentioned before, as the image file is created using 'truncate', only the necessary space needed to uncompress the cloudimg will be used on the filesystem. Apart from that, we assume that 2GB of free space should be available on every test system used for Ubuntu autopkgtest.

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