this post was submitted on 19 Apr 2024
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cryptsetup hanging? (lemmy.sdf.org)
submitted 6 months ago by wesker@lemmy.sdf.org to c/linux@lemmy.ml
20 comments fedilink hide all child comments
 

Anyone ever have cryptsetup just start hanging after entering password on boot? This seems like it's going to be a fun issue to try to resolve...

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[–] lemmyreader@lemmy.ml 3 points 6 months ago (3 children)

Boot with previous kernel ? If fail, boot from Linux live, connect, mount, make backups, and try to fix.

[–] sun_is_ra@sh.itjust.works 4 points 6 months ago (1 children)

It could also be a disk problem. I second the backup suggestion

[–] wesker@lemmy.sdf.org 2 points 6 months ago

This is my main concern.

[–] wesker@lemmy.sdf.org 3 points 6 months ago (1 children)

Oddly, after a few tries I managed to get past. I religiously back things up, and just last night pushed all my current dots.

I'm gonna run some drive diagnostics. If everything looks good, I'll just repartition and take this as a sign to only use encryption on secondary drives where I backup sensitive info.

[–] haui_lemmy@lemmy.giftedmc.com 2 points 6 months ago (1 children)

I really need to get into pushing dot files. Every time I think „its not going to be that much“. Then I install a new system and like 20 apps, then I fiddle here and there. After a couple weeks I def rack up one or more hours of config.

[–] wesker@lemmy.sdf.org 5 points 6 months ago* (last edited 6 months ago) (1 children)

My protip is to use symlinks, and then just keep all your dots in a project folder. Makes it super easy to keep iterating on them in realtime, and pushing changes.

[–] haui_lemmy@lemmy.giftedmc.com 2 points 6 months ago

Thats neat! Thanks for the suggestion. I‘ll try that. Currently am experimenting on libraries with my coding stuff.

[–] krolden@lemmy.ml 1 points 6 months ago* (last edited 6 months ago) (1 children)

How could you boot a different kernel if you can't unlock the drive?

[–] Violet_McQuasional@feddit.uk 1 points 6 months ago (1 children)

Isn't it quite common to have /boot on an unencrypted partition?

[–] krolden@lemmy.ml 1 points 6 months ago

Oh yeah duh

[–] michael_palmer@lemmy.sdf.org 2 points 6 months ago

Today it happened for the first time for me. I use arch btw.

[–] krolden@lemmy.ml 2 points 6 months ago* (last edited 6 months ago) (2 children)

How long do you wait before you declare it hung?

Sometimes decryption takes up to a minute depending on your system specs and optimizations.

I suggest booting from a live disc and trying to unlock it from there.

[–] wesker@lemmy.sdf.org 5 points 6 months ago (2 children)

10m is when I throw my hands up. Normally it takes under 20s.

[–] drwho@beehaw.org 4 points 6 months ago (1 children)

That's more than a reasonable period of time to wait.

Can you run a SMART check on the drive from a liveCD? memtest86?

[–] wesker@lemmy.sdf.org 3 points 6 months ago

An extended test using nvme-cli showed zero errors. I'll try memtest later today.

[–] krolden@lemmy.ml 2 points 6 months ago (1 children)

Paste the output of cryptsetup benchmark

[–] wesker@lemmy.sdf.org 2 points 6 months ago (1 children) 
# Tests are approximate using memory only (no storage IO).
PBKDF2-sha1      2957901 iterations per second for 256-bit key
PBKDF2-sha256    4946113 iterations per second for 256-bit key
PBKDF2-sha512    1945410 iterations per second for 256-bit key
PBKDF2-ripemd160 1123875 iterations per second for 256-bit key
PBKDF2-whirlpool  773286 iterations per second for 256-bit key
argon2i       8 iterations, 1048576 memory, 4 parallel threads (CPUs) for 256-bit key (requested 2000 ms time)
argon2id      8 iterations, 1048576 memory, 4 parallel threads (CPUs) for 256-bit key (requested 2000 ms time)
#     Algorithm |       Key |      Encryption |      Decryption
        aes-cbc        128b      1794.0 MiB/s      6427.8 MiB/s
    serpent-cbc        128b       107.4 MiB/s       765.7 MiB/s
    twofish-cbc        128b       275.7 MiB/s       498.2 MiB/s
        aes-cbc        256b      1392.5 MiB/s      5266.3 MiB/s
    serpent-cbc        256b       114.8 MiB/s       798.4 MiB/s
    twofish-cbc        256b       284.6 MiB/s       498.7 MiB/s
        aes-xts        256b      5290.1 MiB/s      5322.6 MiB/s
    serpent-xts        256b       697.6 MiB/s       635.9 MiB/s
    twofish-xts        256b       403.4 MiB/s       413.4 MiB/s
        aes-xts        512b      4070.4 MiB/s      4048.9 MiB/s
    serpent-xts        512b       664.6 MiB/s       642.0 MiB/s
    twofish-xts        512b       417.6 MiB/s       421.7 MiB/s
[–] krolden@lemmy.ml 1 points 6 months ago (1 children)

how about systemd-analyze and cryptsetup luksDump <lukspart> | grep Slot

[–] wesker@lemmy.sdf.org 1 points 6 months ago

I'm not using systemd. Grepping on Slot doesn't return any results.

LUKS header information
Version:       	2
Epoch:         	3
Metadata area: 	16384 [bytes]
Keyslots area: 	16744448 [bytes]
UUID:          	<redacted>
Label:         	(no label)
Subsystem:     	(no subsystem)
Flags:       	(no flags)

Data segments:
  0: crypt
	offset: 16777216 [bytes]
	length: (whole device)
	cipher: aes-xts-plain64
	sector: 512 [bytes]

Keyslots:
  0: luks2
	Key:        512 bits
	Priority:   normal
	Cipher:     aes-xts-plain64
	Cipher key: 512 bits
	PBKDF:      argon2id
	Time cost:  8
	Memory:     1048576
	Threads:    4
	Salt:       <redacted>
	AF stripes: 4000
	AF hash:    sha512
	Area offset:32768 [bytes]
	Area length:258048 [bytes]
	Digest ID:  0
[–] ironclad_chomskyan@mastodon.social 2 points 6 months ago

@krolden @wesker As soon as my irritability crosses the 50% mark.😎