I have a brand new 4TB drive that I installed and encrypted using this tutorial:
https://www.tecmint.com/encrypt-drives-using-luks-in-fedora-linux/
System is a fresh install of Fedora 30.
When I get done, the drive shows up in my Fedora sidebar, and when I click it asks for a password. I am 200% sure I typed the password in correctly, in fact it accepted it when I got to the mkfs step, but now when I try to unlock it, it won't accept the password.
I went through this three times, and two separate brand new drives, reformatting them each time, and it never allows me to unencrypt them, is there a reason?
The error is:
Error unlocking /dev/sdb: Failed to activate device: File exists
Here's the output of
sudo cryptsetup --debug luksOpen /dev/sda /dev/mapper/luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79:
cryptsetup 2.2.0 processing "cryptsetup --debug luksOpen /dev/sda /dev/mapper/luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79"
Running command open.
Locking memory. Installing SIGINT/SIGTERM handler.
Unblocking interruption on signal.
Allocating context for crypt device /dev/sda.
Trying to open and read device /dev/sda with direct-io.
Initialising device-mapper backend library.
Trying to load any crypt type from device /dev/sda.
Crypto backend (OpenSSL 1.1.1c FIPS 28 May 2019) initialized in cryptsetup library version 2.2.0.
Detected kernel Linux 5.2.9-200.fc30.x86_64 x86_64.
Loading LUKS2 header (repair disabled).
Acquiring read lock for device /dev/sda.
Opening lock resource file /run/cryptsetup/L_8:0
Verifying lock handle for /dev/sda.
Device /dev/sda READ lock taken.
Trying to read primary LUKS2 header at offset 0x0.
Opening locked device /dev/sda
Veryfing locked device handle (bdev)
LUKS2 header version 2 of size 16384 bytes, checksum sha256.
Checksum:3acf534054a6b4850a43fe7e760949c422748a1bc7f7de49b48cfda3911d751c (on-disk)
Checksum:3acf534054a6b4850a43fe7e760949c422748a1bc7f7de49b48cfda3911d751c (in-memory)
Trying to read secondary LUKS2 header at offset 0x4000.
Reusing open ro fd on device /dev/sda
LUKS2 header version 2 of size 16384 bytes, checksum sha256.
Checksum:62399b5cb65dff96cef8c2bde94d100e3c9f1a88cef7bdd08f47a11df90db2bc (on-disk)
Checksum:62399b5cb65dff96cef8c2bde94d100e3c9f1a88cef7bdd08f47a11df90db2bc (in-memory)
Device size 4000787030016, offset 16777216.
Device /dev/sda READ lock released.
PBKDF argon2i, time_ms 2000 (iterations 0), max_memory_kb 1048576, parallel_threads 4.
Activating volume /dev/mapper/luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79 using token -1.
Interactive passphrase entry requested.
Enter passphrase for /dev/sda:
Activating volume /dev/mapper/luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79 [keyslot -1] using passphrase.
dm version [ opencount flush ] [16384] (*1)
dm versions [ opencount flush ] [16384] (*1)
Detected dm-ioctl version 4.40.0.
Detected dm-crypt version 1.18.1.
Device-mapper backend running with UDEV support enabled.
dm status luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79 [ opencount noflush ] [16384] (*1)
Device /dev/mapper/luks-2d7e94ef-dc79-40e2-b97b-057b1d182d79 already exists.
Releasing crypt device /dev/sda context.
Releasing device-mapper backend.
Closing read only fd for /dev/sda.
Unlocking memory.
Command failed with code -5 (device already exists or device is busy).
