gutsy: libdevmapper 1.02.20 and kernel driver incompatible

[earthforce_1]

Binary package hint: kernel-patch-device-mapper

I am using the sparc64 build on an Ultra 5. All packages are fully up to date as of Dec. 26/2007

When setting up cryptmount, I encounter the following error(s):

gary@zack:/etc/cryptmount$ sudo cryptmount --prepare secret
enter password for target "secret":
/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 1.02.20 (2007-06-15)(compat) and kernel driver
failed to initialize device-mapper task
device-mapper target-creation failed for "secret"

[earthforce_1 (earthforce1)]

Hmm, saw what looks like it could have been a fix in http://ubuntuforums.org/showthread.php?p=4038422#post4038422 that apparently worked for somebody. When I tried the patch the result was:

sudo cryptmount --prepare secret
[sudo] password for gary:
enter password for target "secret":
device-mapper: reload ioctl failed: Invalid argument
device-mapper task failed
device-mapper target-creation failed for "secret"

The forum thread mentioned a connection to https://bugs.launchpad.net/ubuntu/+source/devmapper/+bug/106696 although it does not solve my problem, it just changes the error messages.

[Marco Rodrigues (gothicx)]

Hi!

What version of Ubuntu are you usiing? Hardy?

Thanks

[Albert Wong (awong-public)]

I'm had the same problem. It seems like dm_mod isn't getting autoloaded and if it's not loaded, then cryptsetup reports an incompatible libdevmaper.

Trying doing "modprobe dm_mod" first and see if hte problem doesn't go away?

[Pau Garcia Quiles (pgquiles)]

I had the same problem and 'modprobe dm_mod' fixed it

[Alessandro Ghersi (alessandro-ghersi)]

Same issue in Hardy amd64

[didwah (petercdee)]

Hi

I just experienced the same issue. Had to run modprobe dm_mod to resolve.

# cat /proc/version

Linux version 2.6.24-16-generic (buildd@palmer) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #1 SMP Thu Apr 10 13:23:42 UTC 2008

# cat /etc/issue
Ubuntu 8.04.2 \n \l

Hope this info helps.