On Sun, 2008-11-23 at 20:29 -0600, Jeff Epler wrote:
> I'm not aware of a specific reason why this was deactivated in our
> kernels, if it was included in the ubuntu stock kernels.
>
> If you want to rebuild your own kernel with this enabled (it should make
> a kernel compatible with the regular emc2 packages), I detailed how to
> do it back in september:
> http://article.gmane.org/gmane.linux.distributions.emc.user/9172
> with this correction to one of the commandlines I gave:
> http://article.gmane.org/gmane.linux.distributions.emc.user/9185
> but now you should probably use the URLs
>
> http://linuxcnc.org/hardy/dists/hardy/base/source/linux_2.6.24-16.30.linuxcnc.4.tar.gz
>
> http://linuxcnc.org/hardy/dists/hardy/base/source/linux_2.6.24-16.30.linuxcnc.4.dsc
> to get source matching the newest rtai-enabled kernel we've released.
>
> Jeff
>
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Jeff,
Thank you for your response.
Is it possible to simply compile the module and copy it in place???
I did try to download the source package for the rtai image that I am
running but ended up with a different version of the source...
apt-get source linux-image-2.6.24-16-rtai
downloaded, extracted and applied diffs for linux_2.6.24-21.
I copied the config file from my /boot partition to .config in the build
directory, modified for CONFIG_DM_CRYPT=m; ran make oldconfig followed
by 'make';
all seemed to go well up to the failed insmod...
insmod: error inserting '/usr/src/linux-2.6.24/drivers/md/dm-crypt.ko':
-1 Invalid module format
(from dmesg)
[41163.530307] dm_crypt: disagrees about version of symbol struct_module
Is there a simple way to solve this? or am I destined for the rabbit
hole of kernel dev/sysadmin...
Is there anything I can do to help get the additional CONFIG_DM_ targets
enabled in the current/next release or update???
Thanks again for your help and attention.
Tom
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