[arch-general] can't unlock a luks encrypted partition. (urgent).

[Evangelos Foutras]

On Fri, Oct 9, 2009 at 8:06 PM, Hussam Al-Tayeb <ht990332 at gmail.com> wrote:
> Hi, I'm having a problem with disk encryption using luks. I have
> my /home disk (on a separate disk 'sdb') encrypted using luks.
>
> I have this in /etc/cryptsetup
> home            /dev/sdb1               ASK
>
> and this in /etc/fstab
> /dev/mapper/home /home ext4 defaults,user_xattr 0 1
>
> Suddenly today, it won't accept the passphrase on boot. I'm sure that
> I'm entering it correctly. It took me 32 tries the first time and many
> more the second reboot after kernel 2.6.31.3 update.
>
> The annoying thing is that archlinux only takes three tries
> then fails and I have to reboot to try again.
>
> Any idea please? I'm 100% sure I'm entering the passphrase correctly.
>
> I don't have another operating system installed or anything and I go
> back to work in a few days so looking for a new distribution or
> operating system is not a favorable option. I really need help please :/
>
> [root at LARS hussam]# cryptsetup status /dev/mapper/home
> /dev/mapper//dev/mapper/home is active:
>  cipher:  aes-cbc-essiv:sha256
>  keysize: 128 bits
>  device:  /dev/sdb1
>  offset:  1032 sectors
>  size:    156295290 sectors
>  mode:    read/write

Make sure that /dev/sdb1 is the partition you think it is, and the
disks haven't switched device nodes. :)