Re: TrueCrypt 7 with GUI and kernel crypto
 

So, how do I know which version of kernel power is installed?
Sorry, I took the TrueCrypt link from the page I saved.
I think it was the one you posted in the first post of this topic.

Re: TrueCrypt 7 with GUI and kernel crypto
 

I had this error trying to mount volume with ext4 filesystem.
I had to manually specify filesystem
Try adding --filesystem=XXX to the truecrypt command (where XXX is the FS in the truecrypt volume).

You can also decrypt the volume without mounting using --filesystem=none , and mount manually using mount command

Re: TrueCrypt 7 with GUI and kernel crypto
 

uname -r. And please, next time do your research on such simple questions. So, what cipher are you using for that volume?

Re: TrueCrypt 7 with GUI and kernel crypto
 

I am using version 7.1. Estel's wrapper keeps telling me xts is not supported and keeps setting -nokernelcrypto

But I'm using KP49 - is there anything else I need to add or enable for kernel crypto to work?

Re: TrueCrypt 7 with GUI and kernel crypto
 

nman, are you executing everything as a root? Otherwise, I haven't seen any situation, when it would fail to detect XTS support using latest (repositories) kernel.
---

If it isn't source of Your problems, a dirty workaround would be to set up Your custom small script, that does:
... and run truecrypt.real (actual binary) after that. This way, You do exactly what wrapper does for You, *except* the part checking for kernel support and setting '-m nokernelcrypto' otherwise.

Just be sure, that You *really* have proper kernel with proper support. You can cat /proc/crypto to see supported modes. If any of things listed there got XTS in name, you're good to go.

/Estel

Re: TrueCrypt 7 with GUI and kernel crypto
 

Did you install the kernel-modules package as well? KP49 is pretty good about having most things built in, but this particular thing is a module. If you installed just the kernel and not the modules, and don't use some of the other advanced things (like h.e.n.) you may not have noticed that till now. :)

Re: TrueCrypt 7 with GUI and kernel crypto
 

IIRC, It'll only appear there if it the module is loaded. Thus, the best way to check is to take a look at /lib/modules/`uname -r` or to load it with modprobe.

Re: TrueCrypt 7 with GUI and kernel crypto
 

Thanks, I have modules installed...
No I wasn't running TC as root - when I do I don't get the error message from the wrapper.
Looks like that was it, but... when I run TC benchmark, results are the same.

I don't see xts when I do cat /proc/crypto...

Re: TrueCrypt 7 with GUI and kernel crypto
 

nman, as stated on the first page, you *must* run truecrypt as a root. Benchmark won't show the difference, but trust me, You'll feel it on real volumes, in form or "goddamnit" errors, as truecrypt normally expect XTs support.

/Estel

Re: TrueCrypt 7 with GUI and kernel crypto
 

Thanks, working great.
And holy carp what a difference - copying 2GB file to encrypted partition, as user - 28minutes.
as root, presumably with kernelcrypto - 2 minutes!!! (which works out to about 20Mb/sec, about the same as for unencrypted copying!

Just side note in my defense :) Nothing on the first page about running as root...(maybe there is in other thread started by Estel).. might want to add that in. (or merge the threads...)

Re: TrueCrypt 7 with GUI and kernel crypto
 

There was a proposition about merging threads - i liked to keep it kernel-power way (one thread for development problems/ideas, another one for generic "TrueCrypt eats my battery life and dog" type). Yet, I've also noticed, that keeping it separated is becoming troublesome, so when time permits, I may audit and re-write last remaining suggestions (with correct credits for NIN101, of course), and perform a /thread hijack ;)

Re: TrueCrypt 7 with GUI and kernel crypto
 

Ok... I updated to Kernel Power v49 and now it works! :)
Now, stupid question :p :
as I said, I installed this version:
http://i1209.photobucket.com/albums/...7forMaemo5.jpg
I updated to Kernel Power v49 and then installed Truecrypt 7.1-maemo6.
I started TrueCrypt from Xterminal: am I sure I'm using Truecrypt 7.1-maemo6 and not the previous version?
How do I know? If I click on "About", it only says: TrueCrypt 7.1.

Re: TrueCrypt 7 with GUI and kernel crypto
 

Bulletproof approach - perform:
... watch carefully, if it succeed, then, try running 'truecrypt'a from xterm as root. If it doesn't start (*doesn't exist), install it again from the repos, and You'll be 100% sure, that You're using latest version :)

Before someone start to grill me - I know, there are more "proper" ways of checking it. Yet, this one seems to be least complicated and error prone.

/Estel

Re: TrueCrypt 7 with GUI and kernel crypto
 

Ok... it worked just as you said! I removed and reinstalled!
Thanks!

Re: TrueCrypt 7 with GUI and kernel crypto
 

Help needed, please...I get the following error when trying to create a volume, after the formatting finishes:

/proc/misc: No entry for device-mapper found
Is device-mapper driver missing from kernel?
Failure to communicate with kernel device-mapper driver.
/proc/misc: No entry for device-mapper found
Is device-mapper driver missing from kernel?
Failure to communicate with kernel device-mapper driver.
Incompatible libdevmapper 1.02.27 (2008-06-25)(compat) and kernel driver
Command failed

I've done some reading but can't come up with a concrete step to solve the problem. It looks like I need the dm module, but don't know where/how to get it. I am not a power kernel user.

Re: TrueCrypt 7 with GUI and kernel crypto
 

Just install latest kernel-power (kp52).

Re: TrueCrypt 7 with GUI and kernel crypto
 

Hmmm, thanks, but having read about the issues with video playback (pre-kp52, though), I am a little wary.

(Don't mean to derail the thread to talking about kernel power here.)