I am dual booting Ubuntu 20.04 installed with a dedicated home and swap partition. I encrypted both home and swap using encryptfs after install. Since then no issues or whatsoever. After running some updates today I got a warning message at boot stating that:
cryptsetup: WARNING: Option 'size' missing in crypttab for plain dm-crypt mapping cryptswap1. Please read /usr/share/doc/cryptsetup/README.initramfs and add the correct 'size' option to your crypttab(5).
Following the suggestion in this thread I added the option size=256 to the content of /etc/crypttab:
cryptswap1 UUID=XXXXXXXXXXXXXXX /dev/urandom swap,offset=1024,cipher=aes-xts-plain64,size=256
Didn't work though, the warning message at boot still persists with no noticable effect to the system.
The output of sudo cryptsetup status /dev/mapper/cryptswap1 is as following:
/dev/mapper/cryptswap1 is active and is in use.
type: PLAIN
cipher: aes-xts-plain64
keysize: 256 bits
key location: dm-crypt
device: /dev/sda4
sector size: 512
offset: 1024 sectors
size: 39060480 sectors
mode: read/write
I will appreciate some advice here, thanks.
