automatically mount all luks partitions at startup, not only /home

[Frédéric]

Hi,
I have multiple partitions encrypted with luks and only the main one
with /home is decrypted at startup. How can I tell the system I want
to open all of them at startup?
Thanks,
F

[François Patte]

Le 05/09/2018 à 08:05, Frédéric a écrit :
>  Hi,
>  I have multiple partitions encrypted with luks and only the main one
>  with /home is decrypted at startup. How can I tell the system I want
>  to open all of them at startup? 
You can maybe put a line in fstab for the partitions you want to mount
at startup and you will be prompted for the passphrase if a partition is
encrypted.



-- 
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. [phone]
http://www.math-info.univ-paris5.fr/~patte

[Gordon Messmer]

On 09/04/2018 11:05 PM, Frédéric wrote:
>  I have multiple partitions encrypted with luks and only the main one
>  with /home is decrypted at startup. How can I tell the system I want
>  to open all of them at startup? 
The system will prompt you for the block devices listed in 
/etc/crypttab.  See "man crypttab"

[Frédéric]

>  The system will prompt you for the block devices listed in
>  /etc/crypttab.  See "man crypttab" 
That seems the best for me. The most difficult was to find what to
write in /etc/crypttab but I managed to do that looking at
/dev/disk/by-uuid. I have now 3 lines like this one:
luks-${UUID} UUID=${UUID} none
where ${UUID} is what I found in /dev/disk/by-uuid that points to a
physical partition /dev/sdX1

The good surprise is that if all the encrypted partitions have the
same passphrase, it is asked only once! but if you make an error the
first time then, you have to type it for all of your partitions!

Thanks for your help,

F