https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=283043
Bug ID: 283043
Summary: gptboot fails to read the encrypted rootfs if geli
authentication (geli -a) is used
Product: Base System
Version: 14.1-STABLE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
abstract:
when using geli init [-b] -g -a <HMAC>, gptboot cannot access the encrypted
rootfs properly.
imho this can be a code or documentation error.
freebsd version:
FreeBSD-14.1-STABLE-amd64-20240926-4f4860c9b07c-268821-disc1.iso (1401502)
debugging env was vmware esxi 8.0u3, Releasebuild-24022510, pvscsi adapter
failing boot output:
GELI Passphrase for disk0p2: ***
Calculating GELI Decryption Key for disk0p2: 3124135 iterations...
gptboot: No /boot/loader on 0:ad(0p2)
gptboot: No /boot/kernel/kernel on 0:ad(0p2)
FreeBSD/x86 boot
Default: 0:ad(0p2)/boot/kernel/kernel
boot:
reproduce (live system based install):
gpart create -s gpt da0;
gpart add -t freebsd-boot -l geli01_boot -s 512K da0;
gpart add -t freebsd-ufs -a 1m -l geli01_root -s 40G da0;
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 da0;
==> WORKS: geli init -v -b -g -B "/tmp/geli01_root.meta" -d -e 'AES-XTS' -l
256 -s 4096 "/dev/gpt/geli01_root";
==> FAILS: geli init -v -b -g -a 'HMAC/SHA256' -B "/tmp/geli01_root.meta" -d
-e 'AES-XTS' -l 256 -s 4096 "/dev/gpt/geli01_root";
geli attach -v /dev/gpt/geli01_root
newfs -j -L root -O 2 -o time -U -i 32768 -b 65536 -f 8192 -c 262144 -m 8
/dev/gpt/geli01_root.eli;
mount /dev/gpt/geli01_root.eli /mnt
tar xfC /usr/freebsd-dist/base.txz /mnt
tar xfC /usr/freebsd-dist/kernel.txz /mnt
echo "/dev/da0p2.eli / ufs rw,noatime 1 1" >/mnt/etc/fstab
echo "geom_eli_load=\"YES\"" >/mnt/boot/loader.conf
echo "cryptodev_load=\"YES\"" >>/mnt/boot/loader.conf
umount /mnt
geli detach /dev/gpt/geli01_root
there's an old bug going into a similar direction, which might be related:
bug #161013
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