Comment 8 for bug 1212492

Ok.
  I'm not even sure if resizepart can be made to work, at all.

$ parted --help | grep resizepart
  resizepart NUMBER END resize partition NUMBER

the END seems to be in MB, which is insufficient for my needs. I'd like it to grow it to the next partition.
There isn't a way to just say "make it as big as possible".

The undocumented flag for --script is '---pretend-input-tty', but I can't even seem to make that work.

It just seems to ignore things like this:

$ echo "Yes" | sudo parted ---pretend-input-tty /dev/vdb resizepart 1 1000 --machine --script
Warning: Shrinking a partition can cause data loss, are you sure you want to continue?
$ echo $?
0

but it doesn't shrink the partition table

I'm going to remove the support for parted from cloud-init entirely.