Re: encrypting /home partition post-install

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On 11/30/2015 11:24 PM, Ranjan Maitra wrote:
> On Mon, 30 Nov 2015 21:59:35 +0100 Roberto Ragusa <mail@xxxxxxxxxxxxxxxx> wrote:
> 
>> All of this can be done while the system is running
>> normally.
>> Before rebooting, fix your /etc/crypttab and initramfs
>> so you will be asked the passphrase at next boot.
> 
> Can you please give me a reference on how to fix /etc/cryptab or this initramfs up?

I do not have a reference, I just discovered things with experience:

/etc/crypttab should contain something like:

luks-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX none


/boot/grub/grub.conf should contain on your kernel line the part

rd.md=1 rd.dm=1 rd.luks=1

or at least the luks one


then I rebuild the initramfs; the way to do this is continuously changed so my
method is to run   rpm -q --scripts kernel   and look at the posttrans part:

posttrans scriptlet (using /bin/sh):
/sbin/new-kernel-pkg --package kernel --mkinitrd --dracut --depmod --update 3.14.17-100.fc19.x86_64 || exit $?
/sbin/new-kernel-pkg --package kernel --rpmposttrans 3.14.17-100.fc19.x86_64 || exit $?

so I run those two commands.


Sorry for not giving an accurate procedure, but those are the points to consider.


Regards.


-- 
   Roberto Ragusa    mail at robertoragusa.it
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