I've installed a system with / on two disks in software RAID1 with dm_crypt on top from a buster netinstall disk 20190429-03:57.
I'm using a buster netinstall disk because the machine's ixgbe network adapters aren't supported under stable. After a stable install and rebooting, it isn't possible to unencrypt the RAIDed volume. I've ensured the password is correct by copying and pasting on a serial console connection and also trying many times by keyboard and ipmi virtual keyboard. I've also tried the reinstall over 5 times with slightly different options including ensuring all available kernel modules are installed. Mounting works fine if I install buster rather than stretch with exactly the same configuration. Two questions: * could there be a problem in the stable component of the installer for grub or other mising support for dm_crypt? * since I'm aiming to run stable on this machine but I need recent ixgbe network modules anyway, can I install the kernel-image-4.19.0-0.bpo backport package at the end of the installation process from a console? I'm hoping this will also solve the mounting problem I'm experiencing. Thanks very much Rory
