Just a quick update on my end. This also addresses @Xavier Gnata's
question here: https://bugs.launchpad.net/ubuntu/+source/ecryptfs-
utils/+bug/1756840/comments/3

> Ok but what am I supposed to do on a dual boot machine??

I'm writing this all from memory. I did this a long time ago.

My solution is as follows on a Dual Boot machine.

Assume you have Windows on the machine.

1. Use Windows disk tools to make some space for Linux--ex: 120 GB of a 500 GB 
drive.
2. Fully encrypt Windows with Veracrypt. It is awesome and can do full 
partition encryption for your Windows partition, even while Windows is running! 
This might help: 
https://www.howtogeek.com/howto/6169/use-truecrypt-to-secure-your-data/.
2. Install Ubuntu 20.04 with LUKS volume encryption. You have to choose the "do 
something else" option when installing, and then you have to *manually* make an 
encrypted LUKS container. Inside that, you then install Ubuntu.

Done!

Now, when I boot, I get the Linux grub bootloader thing. If I choose
Windows, I have to unlock the disk via a VeraCrypt unlock screen that
pops up *before* Windows can even begin to boot. If I choose Ubuntu,
it's similar: I have to decrypt the LUKS encryption on the screen that
pops up *before* Ubuntu even begins to boot.

Works great. No more need for ecryptfs anymore in my particular case.

Note that on the Ubuntu option, I also make a big swapfile, as I
describe here: https://askubuntu.com/questions/927854/how-do-i-increase-
the-size-of-swapfile-without-removing-it-in-the-
terminal/1177620#1177620.

This is in place of a swap *partition*. The swapfile has the advantage
of being *within* the LUKS-encrypted volume, so it gets encrypted too.

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https://bugs.launchpad.net/bugs/1756840

Title:
  Buggy, under-maintained, not fit for main anymore; alternatives exist

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