nodl stuck in unlock

Applies to:

nodl One (black, etched logo) with activated disk encryption and nodl Dojo (red, etched logo)

Symptoms

After entering unlock password, your device stays on the "Device successfully unlocked, please wait for second stage" screen or goes back to the password input box.

Cause

Sometimes, md (the subsystem responsible for RAID) decides the device wasn't cleanly shut down and decides to go into read-only mode for safety. The file system might have also became inconsistent in the process.

Although nodl One doesn't have a second drive, it is RAID-ready so this can happen as well.

Solution

First, ssh into your nodl (opens new window) as rock.

After you're logged in, run the following commands:

sudo su - to become permanently root.

service nodl-bootstrap stop to stop the bootstrapping process.

cat /proc/mdstat to check the status of the drives md0 and md1. If either or both of them in read-only or auto-read-only, run the following to force the drive(s) into readwrite state:

mdadm --readwrite md0

mdadm --readwrite md1

Run cat /proc/mdstat to verify that both drives are no longer in read-only state and that it finished syncing. The output should look similar to the below:

Personalities : [raid1]
md1 : active raid1 sda3[0]
949273408 blocks super 1.2 [1/1] [U]
bitmap: 0/8 pages [0KB], 65536KB chunk

md0 : active raid1 sda1[0]
19479232 blocks super 1.2 [1/1] [U]

unused devices: <none>

Then unlock the encrypted partitions by running the following two commands and using the unlocking password:

cryptsetup open --type luks /dev/md0 root

cryptsetup open --type luks /dev/md1 opt

Then check the partitions for inconsistencies and auto-fix them by supplying the -y argument to fsck:

fsck -y /dev/mapper/root

fsck -y /dev/mapper/opt

Then start the bootstrapping process:

service nodl-bootstrap start

Now open the nodl's UI page and see if the issue went away!

If the issue isn’t solved, please contact support@nodl.it.