Arch Linux

emacsomancer

Member

Registered: 2014-09-20

Posts: 211

dmcrypt /home partition not mounting after update

I had set up a dmcrypt encrypted /home partition as per https://wiki.archlinux.org/index.php/Dm … ile_system over a year ago.  This has been working fine for all of that time.  Last week after I updated my work computer after a couple of months of not updating, I found that it was no longer able to mount the partition at boot for some reason.

I can boot a live image off of a thumbdrive - but what (likely) do I need to do to fix this?

kox

Member

Registered: 2015-05-01

Posts: 146

Re: dmcrypt /home partition not mounting after update

Have you tried to decrypt it manually? Login to console and type
cryptsetup open /dev/sdaX home (replace x with proper number)

If you don't have console upon boot, switch tty ctrl+alt+f3

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 2,046

Re: dmcrypt /home partition not mounting after update

Your /etc/crypttab and the output of 'cryptsetup luksDump /dev/yourhomepartition | head -8' might give a hint.
No other issues/errors with the update, everything alright except for /home?

---

1000

emacsomancer

Member

Registered: 2014-09-20

Posts: 211

Re: dmcrypt /home partition not mounting after update

Your /etc/crypttab and the output of 'cryptsetup luksDump /dev/yourhomepartition | head -8' might give a hint.
No other issues/errors with the update, everything alright except for /home?

As far as I can tell, that's the only issue. It was odd, the first boot after the update it mounted the /home partition properly, but then froze at the login screen. After that, every boot it seemed not to be able to mount at all.

I'll check /etc/crypttab etc. next time I'm in the office.

Thanks!