[clug] Can't mount an encrupted backup file system

Ian Munsie darkstarsword at gmail.com
Wed Jun 13 18:30:18 MDT 2012


> This command on the old eeePC for the 1Tb backup disk gives:
>
> # cryptsetup luksDump /dev/sdc1
> LUKS header information for /dev/sdc1
>
> Version:        1
> Cipher name:    aes
> Cipher mode:    cbc-essiv:sha256
> Hash spec:      sha1
...
> old:
> ====
> $ cat /proc/crypto
> name         : ecb(aes)
> name         : sha256
> name         : sha224
> name         : cbc(aes)
> name         : cbc(aes)
> name         : aes
> name         : aes
> name         : stdrng
> name         : md5
>
> new:
> ====
> $ cat /proc/crypto
> name         : cbc(aes)
> name         : ecb(aes)
> name         : aes
> name         : aes
> name         : ecb(arc4)
> name         : arc4
> name         : stdrng
> name         : md5

The hash you are using (sha256) is missing from your new kernel, can you try
running (as root):

modprobe sha256

Then try mounting the filesystem again.

Cheers,
-Ian


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