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Macce
n00b
Joined: 30 Jun 2005
Posts: 41
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 Posted: Fri Jun 02, 2006 9:06 pm Post subject: Problem with dmcrypt |
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Hello,
I followed the tutorial at Gentoo-wiki for dmcrypt, but I cant create the encrypted partition.
The partition I want to encrypt is /dev/sdb2. It exists.
"cryptsetup create ctikku /dev/sdb2" ask for the passphrase and says "Command failed: Invalid argument".
I've tried different names but it still won't work.
Any suggestions?
Best Regards,
Marcus |
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therisen
n00b
Joined: 27 May 2006
Posts: 36
Location: Germany
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| Posted: Fri Jun 02, 2006 10:23 pm Post subject: |
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Hi,
i'm not sure if i can help you but could you post the output of
Also, is devicemapper running? Look at
Greets, therisen
_________________
"Pure mathematics is on the whole distinctly more useful than applied.
For what is useful above all is technique, and mathematical technique
is taught mainly through pure mathematics.
Godfrey H. Hardy |
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Macce
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Joined: 30 Jun 2005
Posts: 41
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| Posted: Fri Jun 02, 2006 10:28 pm Post subject: |
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Thanks for helping me.
The first command doesn't print anything.
The second prints /dev/mapper/control. |
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therisen
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Joined: 27 May 2006
Posts: 36
Location: Germany
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| Posted: Fri Jun 02, 2006 10:34 pm Post subject: |
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Alright, then try and afterwards your
_________________
"Pure mathematics is on the whole distinctly more useful than applied.
For what is useful above all is technique, and mathematical technique
is taught mainly through pure mathematics.
Godfrey H. Hardy |
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Macce
n00b
Joined: 30 Jun 2005
Posts: 41
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| Posted: Fri Jun 02, 2006 10:45 pm Post subject: |
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jupiter ~ # modprobe dm-crypt
FATAL: Module dm_crypt not found.
I complied everything (that was said to be needed in the wiki) into the kernel, if that changes the situation?
(Of cource I rebooted too...) |
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troymc
Guru
Joined: 22 Mar 2006
Posts: 553
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| Posted: Sat Jun 03, 2006 2:49 pm Post subject: |
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| Macce wrote: | jupiter ~ # modprobe dm-crypt
FATAL: Module dm_crypt not found.
I complied everything (that was said to be needed in the wiki) into the kernel, if that changes the situation?
(Of cource I rebooted too...) |
You should be fine. The /dev/mapper/control exists - so you have the device mapper.
The first part of your command: cryptsetup create ctikku works fine, so I would guess you are having problems with /dev/sdb2
| Code: |
cryptsetup create ctikku /dev/sdb2
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You can test this on a loopback device like this:
| Code: |
# cd /tmp
#
# dd if=/dev/zero of=file1 bs=1M count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 0.180998 seconds, 579 MB/s
#
# losetup /dev/loop0 file1
#
# cryptsetup create ctikku /dev/loop0
Enter passphrase:
#
# mke2fs -q /dev/mapper/ctikku
#
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You now have an encrypted 100MB filesystem inside a file.
troymc |
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Macce
n00b
Joined: 30 Jun 2005
Posts: 41
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| Posted: Sat Jun 03, 2006 2:58 pm Post subject: |
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That worked fine.
What do you think the problem is with the partition? It doesn't matter which partition I try to crypt, same error with my first and second satadisk...  |
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troymc
Guru
Joined: 22 Mar 2006
Posts: 553
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| Posted: Sat Jun 03, 2006 3:44 pm Post subject: |
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| Macce wrote: | That worked fine.
What do you think the problem is with the partition? It doesn't matter which partition I try to crypt, same error with my first and second satadisk... |
I don't know of any reason why you should be having problems. I have several systems with encrypted partitions done this way.
Try using the --verbose and see if it gives you any more info.
Also, you might check dmesg for any messages - maybe the default cipher isn't loaded. Is your kernel crypto built in or modules? ( grep name /proc/crypto will show you the currently available ciphers, default should be aes )
Could it be the passphrase you are using? Try something simple first, like test.
troymc |
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Macce
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Joined: 30 Jun 2005
Posts: 41
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| Posted: Sat Jun 03, 2006 4:00 pm Post subject: |
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Guess what, it works now without doing anything more than I tried before.
Strange, but true. |
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troymc
Guru
Joined: 22 Mar 2006
Posts: 553
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| Posted: Sat Jun 03, 2006 4:03 pm Post subject: |
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| Macce wrote: | Guess what, it works now without doing anything more than I tried before.
Strange, but true. |
It's those SUNSPOTS I tell ya! 
troymc |
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Macce
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Joined: 30 Jun 2005
Posts: 41
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| Posted: Sat Jun 03, 2006 4:05 pm Post subject: |
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Hehe.
Thanks for helping! |
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