Re: [systemd-devel] Partition with random key in crypttab

2015-08-24 Thread Lennart Poettering
On Fri, 21.08.15 12:22, Some Body (somebody.mo...@gmail.com) wrote:

> Hi, I'm not experienced at all with systemd, and not much more in system
> administration, and I don't know if I should post this here, but it is the
> only list I found that seems to provide general support for systemd.
> 
> I want to encrypt my /tmp directory by putting it in an encrypted partition
> (sda9). I put the following line in /etc/crypttab :
> 
> >crypttmp /dev/sda9 /dev/urandom
> >tmp=ext4,cipher=aes,size=256,hash=sha256

systemd's cryptsetup does not understand Debian's "tmp=ext4" option
syntax. We'd be happy to extend it to support it however:

https://github.com/systemd/systemd/issues/952

Lennart

-- 
Lennart Poettering, Red Hat
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[systemd-devel] Partition with random key in crypttab

2015-08-21 Thread Some Body
Hi, I'm not experienced at all with systemd, and not much more in system 
administration, and I don't know if I should post this here, but it is 
the only list I found that seems to provide general support for systemd.


I want to encrypt my /tmp directory by putting it in an encrypted 
partition (sda9). I put the following line in /etc/crypttab :



crypttmp /dev/sda9 /dev/urandom tmp=ext4,cipher=aes,size=256,hash=sha256


...and the following in /etc/fstab :


/dev/mapper/crypttmp /tmp ext4 defaults 0 2


but when I boot, systemd hangs for 1:30, saying that "a startup job is 
running for dev-mapper-crypttmp". Then it fails, and the encrypted tmp 
is not mounted.


I'm on Debian Jessie, if it can help.

What is the recommended way to mount an encrypted partition with a 
random key ?


Thanks.
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