[CentOS] cryptoloop

Morten Sundstrøm phoenix at coretek.no
Thu Jan 21 09:03:19 UTC 2010


I know about that. Is that the reason it wont work in ubuntu?

If I switch to a new encryption i must copy all the data to a new raid wich is not possible at the moment.

I need to get this mounted.

/MS

----- Original Message -----
Fra: "Pasi Kärkkäinen" <pasik at iki.fi>
Til: "CentOS mailing list" <centos at centos.org>
Sendt: 21. januar 2010 09:57:24
Emne: Re: [CentOS] cryptoloop

On Thu, Jan 21, 2010 at 09:41:37AM +0100, Morten Sundstrøm wrote:
> Hi.
> 
> Have a problem that i need som help with:
> 1. Have multipple raids working in a encrypted filesystem in CentOS 5.4 (i386): script file, crypt.sh
> 
> modprobe cryptoloop
>

cryptoloop is depracated, and should not be used. 
Use dm-crypt instead, or if you have to, loop-aes.

-- Pasi

> losetup -e aes /dev/loop0 /dev/md0
> (inserting password here)
> then run
> mount -t ext3 /dev/loop0 /mnt/raid5
> Have been using this in CentOS for a long time and works like a charm.
> 
> 2. Raids is now moved to another server with ubuntu server 9.10 (64bit)
> Raid is detected fine and working.
> 
> Do the same thing again and get:
> sudo modprobe cryptoloop (ok)
> sudo losetup -e aes /dev/loop0 /dev/md0 (ok)
> sudo mount -t ext3 /dev/loop0 /mnt/raid5 (failes with the following msg)
> mount: wrong fs type, bad option, bad superblock on /dev/loop0,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> 
> ubuntu: cat /proc/crypto |grep aes
> name         : ecb(aes)
> driver       : ecb(aes-asm)
> name         : cbc(aes)
> driver       : cbc(aes-asm)
> name         : cbc(aes)
> driver       : cbc(aes-asm)
> name         : aes
> driver       : aes-asm
> module       : aes_x86_64
> name         : aes
> driver       : aes-generic
> module       : aes_generic
> 
> Is there compatible issues here?
> Can it be that the old server was using i386 arch and the new is 64bit?
> losetup version differs?
> 
> Any insight is appreciated.
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