[dm-crypt] Encrypting multiple hard drives

[dm-crypt] Encrypting multiple hard drives

[Scott Castaline]

Is it possible to encrypt 2 physical harddrives as one LUKS volume? If 
it is, would you make reference to both drives under the same cryptsetup 
command? (cryptsetup -y --cipher aes-cbc-essiv:sha256 --key-size 256 
luksFormat /dev/sdc1 /dev/sdd1). Both drives are 500GB and will be used 
together as the same VG in LVM2.

Re: [dm-crypt] Encrypting multiple hard drives

[Sven Eschenberg]

dm-crypt works on block devices, no matter if it's harddsiks, 
partitions, or virtual blockdevices (lvm, md, net block device ...)

If you tie both disks together into one LV, you can of course create a 
single crypto mapping for that LV - If this is wise is another question. 
You might aswell have a crypto mapping for each device and tie those 
together into one LV.

Regards

-Sven

P.S.: No, a SINGLE dm-crypt mapping does not handle two drives at the 
same time in general.

Scott Castaline schrieb:
> Is it possible to encrypt 2 physical harddrives as one LUKS volume? If 
> it is, would you make reference to both drives under the same cryptsetup 
> command? (cryptsetup -y --cipher aes-cbc-essiv:sha256 --key-size 256 
> luksFormat /dev/sdc1 /dev/sdd1). Both drives are 500GB and will be used 
> together as the same VG in LVM2.
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt

Re: [dm-crypt] Encrypting multiple hard drives

[Mikko Rauhala]

ke, 2010-03-03 kello 17:40 -0500, Scott Castaline kirjoitti:
> Is it possible to encrypt 2 physical harddrives as one LUKS volume?

If you want to encrypt the whole LVM, I'd probably raid them together
with md, encrypt the md and use that as a physical volume for your LVM.
(You can go the other way too of course as Sven said, making an LVM out
of the two disks and encrypting the LV(s).)

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