multiple drive full disc encryption

[donald]

Hello, I have finally had enough of my windows problems so I have made the full plunge into kubuntu.

I have run ubuntu since version 5 and could not put up with all the gnome changes so kubuntu for me.

Here is my problem I have a laptop with 3 drives. sda which is a 120gb ssd sdb which is a 1tb mechanical and sdc a 32gb ssd.

I have installed kubuntu using full disc encryption on the 120gb ssd but I really wanted my /home and other / partions on the sdb as it has the space and to help with the wear.

How would I go about changing this and having the sdb full disc encrytption with the same password? I would have set this up during the install but kubuntu did not detect my 1tb drive, even though I could use gparted and see all my hds.

I haven't beena full linux user but I do know my way around the terminal with a bit of help. I did try my google' foo but i can only find the guide I used for the single disc for encryption. Note if it comes down to it I will accept partion based encryption.

Thank you.

[donald]

here is my fdisk -l output.

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1   234441647   117220823+  ee  GPT

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xbcbf8d9d

   Device Boot      Start         End      Blocks   Id  System

Disk /dev/sdc: 32.0 GB, 32017047552 bytes
255 heads, 63 sectors/track, 3892 cylinders, total 62533296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003811f

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1              63    16803989     8401963+  82  Linux swap / Solaris

Disk /dev/mapper/sda3_crypt: 119.3 GB, 119263985664 bytes
255 heads, 63 sectors/track, 14499 cylinders, total 232937472 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/sda3_crypt doesn't contain a valid partition table

Disk /dev/mapper/kubuntu--vg-root: 110.8 GB, 110821900288 bytes
255 heads, 63 sectors/track, 13473 cylinders, total 216449024 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/kubuntu--vg-root doesn't contain a valid partition table

Disk /dev/mapper/kubuntu--vg-swap_1: 8438 MB, 8438939648 bytes
255 heads, 63 sectors/track, 1025 cylinders, total 16482304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/kubuntu--vg-swap_1 doesn't contain a valid partition table

[donald]

also side note how would you partition my layout? just for some ideas?

I had really wanted to use zfs for my 1tb but it is a little complicated to setup for native ubuntu support. I want things as somple as possible incase something goes wrong. Data protection is parimount.

[oshunluvr]

I've not tried it, but I believe you can install LVM and encryption together. Effectively a multidisk encrypted filesystem.

http://www.linuxbsdos.com/2012/09/04...cal-installer/

[donald]

*Solved*

I've not tried it, but I believe you can install LVM and encryption together. Effectively a multidisk encrypted filesystem.

http://www.linuxbsdos.com/2012/09/04...cal-installer/

Ok thank you for the link.

Here is what I found, Ubuntu combined both the alternative cd and the desktop cd in 13.10 effectively ending the easy creation of using full disk encryption across multiple drives. You need to use the 13.10 server cd and then install ubuntu desktop overtop and things work 99.9% ok. I have a couple bugs I am trying to solve right now.