https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281762
Bug ID: 281762
Summary: Kernel hangs when booting from geli encrypted rootfs
without cryptodev loaded
Product: Base System
Version: 14.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
I was trying to install 14.1-RELEASE on a machine that predates AES-NI (not
sure if it matters). I did a BIOS install.
I first tried the geli init -b method where /boot is unencrypted. This yielded
the same kind of hang. I could enter the password, it'd load a couple modules,
then hang with no error.
I then did geli init -g to include encrypted rootfs. Not sure if this would
impact ZFS or not, but I did it on UFS.
Here's the instructions I followed:
geli(8) encrypted root-on-UFS for BIOS boot only
1. Create partition table
gpart create -s gpt ada0
2. Create FreeBSD boot code partition, add boot code
gpart add -t freebsd-boot -s 512k -l gptboot0 ada0
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada0
3. Create root partition for geli(8) provider
gpart add -t freebsd-ufs -a 1m -l ufsroot0 ada0
4. Initialize root file system geli(8) provider, attach provider
geli init -g -l 128 -e AES-CBC -s 4096 ada0p2
geli attach ada0p2
5. Construct UFS2 (softupdates, TRIM, no journaling) file system on geli(8)
provider
newfs -t ada0p2.eli
Note: -U is default since 14.1
6. Install system distribution files
mount /dev/ada0p2.eli /mnt
cd /usr/freebsd-dist
tar xfC base.txz /mnt
tar xfC kernel.txz /mnt
7. Configure system bootstrap information
vi /mnt/boot/loader.conf
geom_eli_load="YES"
vi /mnt/etc/fstab
/dev/ada0p2.eli / ufs rw 1 1
exit
8. Reboot system, configure system
I ended up with the same hang, this time after starting devd. I simply added '
cryptodev_load="YES"' to /boot/loader.conf and the system came up fine
without hanging.
This is using AES-CBC without AES-NI, not sure if it matters.
Thank you!
Related forum thread:
https://forums.freebsd.org/threads/freebsd-14-1-hanging-with-encrypted-rootfs-ufs-geli-bios.95138/
Thanks to T-Daemon for help/information about the geli init -g method working
with BIOS booting.
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