[Bug 1079185] Re: Wrong bootarg for disk with label

[Robie Basak]

Despite spending a considerable amount of time trying, I have been
unable to reproduce this bug in Quantal for verification of -proposed.
This is currently blocking the resolution of bug 1084106 which I've just
bumped to Critical.

I'd appreciate any help getting the fix for this bug verified so that we
can land the fix for critical bug 1084106. I don't feel that there's
anything more than I can do for this bug without assistance here.

If we can't get this verified very soon, I've proposed that we revert
the fix for this bug in quantal-proposed in order to allow the SRU
through for bug 1084106. In this case we'll have to defer the fix for
this bug in Quantal until someone is ready verify it, and then put it
through the SRU queue again.n

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https://bugs.launchpad.net/bugs/1079185

Title:
  Wrong bootarg for disk with label

Status in “flash-kernel” package in Ubuntu:
  Fix Released
Status in “flash-kernel” source package in Quantal:
  Fix Committed
Status in “flash-kernel” source package in Raring:
  Fix Released

Bug description:
  [Impact]

  Installation fails on a Pandaboard on Quantal for users who previously
  had a volume label on an existing partition.

  [Test Case]

  Create and label an existing partition (eg. using e2label). Then run
  the installer. On first reboot, if the bug still exists, the system
  will fail to mount the root filesystem.

  [Regression Potential]

  We're changing calls to blkid only by being specific that we want the
  UUID instead of assuming that the UUID is on the first line. This has
  been tested in d-i on Quantal. I can only see this regression if blkid
  doesn't work as expected in this specific mode in some obscure case
  that we haven't considered.

  [Original Description]

  I just installed Ubuntu 12.10 on a pandaboard.

  At the installation, I selected an empty partition named "ubuntu2" et
  checked the box for formating.

  After the installation process, at the first boot, rootfs couldn't be
  mounted : the bootarg was "root=UUID=ubuntu2"

  So I changed the preEnv.txt on my computer to "root=LABEL=ubuntu2" but
  sill couldn't boot, as the label was erased during format process.

  I fixed it thanks to busybox by putting back label "ubuntu2" to my
  /dev/sda2 partition.

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