It's fixed in partman-ext3 - 84ubuntu2 and as you can see in the link, it's only in Ubuntu 16.04 (Xenial)
https://launchpad.net/ubuntu/+source/partman-ext3 That said it will be great if the fix can be backported, at least for Ubuntu 14.04.3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1361951 Title: mke2fs asks for input when formatting over a partition table To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-ext3/+bug/1361951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs