Bug#820818: partman is not able to resize nvme0n1p3 in d-i

[Ian Jackson <ijackson@chiark.greenend.org.uk>]

Package: partman-partitioning

(I'm afraid I don't know the right package name nor the version
number.  I searched with a general web search for `reporting bugs
debian-installer' and `reporting bugs partman', and looked on
https://wiki.debian.org/DebianInstaller, and didn't find any
guidance.)

I asked the partitioner in the Stretch Alpha 5 amd64 debian-installer
(firmware-stretch-DI-alpha5-amd64-netinst.iso) to resize an ext4
partition on an NVME device.

I did this from:

  You are editing partition #3 of /dev/nvme0n1.  This partition
  is [blah blah] ext4 [blah].

It failed, saying "Because of an unknown reason it is impossible to
resize" etc.  The log on VC4 says:

  Apr 12 18:00:03 partman: Error running 'tune2fs -l /dev/nvme0n1'

Obviously that is not the right device name.  I asked for a shell on
another VC, and

  tune2fs -l /dev/nvme0n1p3

printed the kind of output I would expect.


I hope this bug report is helpful.  I can probably reproduce the
problem and maybe save debug logs etc.

The partition is actually the filesystem of the laptop vendor's[1]
preinstalled Ubuntu trusty.  So I will try to resize it from within
the Ubuntu installation.

I hope that when I make new partitions it will manage to choose the
correct device to write to when it creates the filesystem...

Thanks,
Ian.

[1] Dell, an XPS-2013 Developer Edition 2016.  The laptop is booting
in UEFI mode and the NVME SSD seems to have a GPT partition table.