I've setup a Kali Linux installation on an SD card and created an encrypted LUKS partition with a LVM logical volume inside of it, then created a BTRFS filesystem inside. Almost everything works, but boot fails after decrypting the LUKS volume succeeds. Logs:
Begin: Loading essential drivers ... done. Begin: Mounting root file system ... Begin: Running /scrypts/local-top ... [ 8.655803] device-mapper: ioctl: 4.28.0-ioctl (2014-09-17) initialised: firstname.lastname@example.org [ 8.689182] random: lvm urandom read with 113 bits of entropy available Volume group "pi" not found Skipping volume group pi Unable to find LVM volume pi/root Unlocking the disk /dev/mmcblk0p2 (picrypt) Enter passphrase: Reading all physical volumes. This may take a while... Found volume group "pi" using metadata type lvm2 ffff0000-ffff1000 r-xp 00000000 00:00 0 [vectors]: mlock failed: Cannot allocate memory 1 logical volume(s) in volume group "pi" now active ffff0000-ffff1000 r-xp 00000000 00:00 0 [vectors]: munlock failed: Cannot allocate memory cryptsetup: picrypt set up successfully done. Begin: Running /scripts/local-premount ... done. mount: mounting /dev/mapper/pi-root on /root failed: Invalid argument Begin: Running /scripts/local-bottom ... done. done. Begin: Running /scripts/init-bottom ... mount: mounting /de on /root/dev failed: No such file or directory done. Target filesystem doesn't have requested /sbin/init. No init found. Try passing init= bootarg. modprobe: module i8042 not found in modules.dep modprobe: module atkbd not found in modules.dep modprobe: module ehci-pci not found in modules.dep modprobe: module ehci-orion not found in modules.dep modprobe: module ehci-hcd not found in modules.dep modprobe: module uhci-hcd not found in modules.dep modprobe: module ohci-hcd not found in modules.dep BusyBox v1.20.2 (Debian 1:1.20.0-7) built-in shell (ash) Enter 'help' for a list of built-in commands. /bin/sh: can't access tty; job control turned off
It seems to fail to be able to mount my root filesystem. In the initramfs, I can actually mount the BTRFS partition just fine using all the options given in fstab. It seems to fail initially, for some strange reason that I can't diagnose.
In the initramfs, running the following works:
mount -t btrfs -o defaults,subvol=@,compress=lzo,ssd,noatime /dev/mapper/pi-root /root
Mounting works and I can see the filesystem properly.
proc /proc proc defaults 0 0 /dev/mmcblk0p1 /boot vfat defaults 0 2 /dev/mapper/pi-root / btrfs defaults,subvol=@,compress=lzo,ssd,noatime 0 1
picrypt /dev/mmcblk0p2 none luks
Here's my kernel command line:
dwc_otg.fiq_fix_enable=1 console=tty1 console=tty1 root=/dev/mapper/pi-root cryptopts=target=picrypt,source=/dev/mmcblk0p2,lvm=pi rootfstype=btrfs rootwait rootdelay=5 ro rootflags=noload,subvol=@
I've made sure that initramfs.gz is up to date.
Again, to reiterate, here's my setup:
- SD Card
- Boot VFAT FS
- LUKS Encrypted FS (
- LVM Logical Volume (
- BTRFS Filesystem
- BTRFS Subvolume (
I have a fairly identical setup as this on my main laptop, which works fine.
During Boot, here's what happens and then what fails:
- Decrypt LUKS Volume
- Open Volume Group
- Try mounting LV
rootvia fstab: Fails with
Busybox also seems to fail with not being able to access the tty, but that's irrelevant to the problem.
How can I debug what's going wrong here?