[solved-please edit wiki]dm-crypt luks - drive failing

virtguru · Last edited by virtguru on Fri Aug 12, 2016 6:06 pm; edited 1 time in total

why is this page constantly changing? Sorry if Ive missed something here , smartd gave a notice that my /home is finally failing after 7 years .

-its encrypted luks
-its xfs
-i have no lvm
-i have no desire to go lvm

what now is an ok procedure to encrypt a single drive with a single partition , i dont need lvm any containers or what not.

i looked at the https://gitlab.com/cryptsetup/cryptsetup FAQ.

directly running it on /dev/sdc and then encrypting sdc only (no sdc1) and mounting /dev/sdc through dmcrypt works. data is there.

Problem is my box when lightdm tries to access the new /home on /dev/mapper/home which is on /dev/sdc locks everything up. logging in any user will lock the box up (except root since root has /root)

am i missing something ? can we not now directly luks to /dev/sdX ? still need /dev/sdX1 ? cant remember how this was done a few years back-

cheers

frostschutz · Advocate Joined: 22 Feb 2005 Posts: 2971 Location: Germany

I would not use sdx directly, not for anything, regardless if it's a filesystem, LUKS, mdadm, LVM, ...

Always use a partition table. Otherwise sooner or later something will trip you up (as soon as any partition program creates a partition table, your LUKS header is shot).

There should be nothing wrong with using filesystem on LUKS, without LVM.

If your box locks up entirely it could also be a hardware issue.

virtguru · Posted: Tue Aug 09, 2016 10:40 pm Post subject:

virtguru · Posted: Fri Aug 12, 2016 6:05 pm Post subject:

Thanks frostschutz you did point me in the right direction I needed a partition table, sorry if a came over a bit cross its the state of our wiki.. Finally found the old way over on Arch wiki sigh , thanks for heads up

Cheers