Based only on the error message, I tried defining tmpData in /etc/crypttab. Previously, the file consisted of one line:
sda6_crypt UUID={uuid} none luks,discard
I added a second line:
tmpData UUID={uuid} none luks,discard
and re-ran update-initramfs. It still produced the other messages above (lines starting with I:), but on reboot it did not drop me into a busybox shell.
Note that it did ask me for the password for tmpData, where before it was asking for the password for /dev/sda3 (the encrypted partition), but otherwise it appears to have booted normally.
So, not entirely sure if this is a solution or a kludge.
Success?
Based only on the error message, I tried defining tmpData in /etc/crypttab. Previously, the file consisted of one line:
sda6_crypt UUID={uuid} none luks,discard
I added a second line:
tmpData UUID={uuid} none luks,discard
and re-ran update-initramfs. It still produced the other messages above (lines starting with I:), but on reboot it did not drop me into a busybox shell.
Note that it did ask me for the password for tmpData, where before it was asking for the password for /dev/sda3 (the encrypted partition), but otherwise it appears to have booted normally.
So, not entirely sure if this is a solution or a kludge.