Public bug reported:
[Impact]
To work-around a bug in ubuntu-image, we hard-coded a `--image-size 8G` in
livecd-rootfs for UC20 image builds. The reason for that was that ubuntu-image,
in its initial UC20 image build implementation, was skipping yet-to-be-created
partitions while calculating the final image size. This was fixed in
ubuntu-image 1.10, and now the workaround is no longer required.
Additionally, the HWE team asked if it would be possible for the amd64 images
to be smaller than 8GB as they need them to fit on 4GB storage. Without the
hard-coded image size the UC20 images are around 3.1GB in size - which would be
perfect for their needs.
[Test case]
Build a -proposed based UC20 focal amd64 image via live-build. Download
the image, decompress it and run `parted <imagefile>`. Print the
partition table and make sure that the image is now big enough for all
the contents (so at least 3GB) but smaller than the previous hard-coded
size (8GB).
[What could go wrong]
The only parts I could see regressing is the thing we want to actually
fix: so ultimately ubuntu-image not calculating the size properly. But
this was already verified before pushing this SRU. The change only
affects ubuntu-core focal+ builds, so the regression risk is really
minimal.
** Affects: livecd-rootfs (Ubuntu)
Importance: Medium
Assignee: Łukasz Zemczak (sil2100)
Status: In Progress
** Affects: livecd-rootfs (Ubuntu Focal)
Importance: Undecided
Status: In Progress
** Affects: livecd-rootfs (Ubuntu Groovy)
Importance: Undecided
Status: Invalid
** Also affects: livecd-rootfs (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: livecd-rootfs (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: livecd-rootfs (Ubuntu Groovy)
Status: New => Invalid
** Changed in: livecd-rootfs (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1905990
Title:
UC20 amd64 images are unnecessarily big
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