grsecurity forums

I've tried multiple kernel configuration but cannot get this straight for now, maybe someone can point me at what i'm missing ?

device-mapper: reload ioctl on temporary-cryptsetup-896 failed: No such file or directory
Failed to setup dm-crypt key mapping for device /dev/vg-......
Check that kernel supports aes-xts-plain64 cipher .....

the ..... are mine

Check if all necessary options are enabled.
If you want more help than that, you should post your Kernel config...

Hmm, what do you mean, check if all is enabled ? Is there not a reference for this ?

refusal can be a great motivation ... the XTS module is only available after enabling 'development or incomplete drivers'

Does that mean that you resolved you issue? If not there are some hints you could follow. First you can search during make menuconfig by enter "/<search string>" or "/xts" for example. For me CRYPTO_XTS depents on CRYPTO and nothing else.
Other than that you will want some kind of AES and possibly the user-space interfaces and possibly some dm-crypt related stuff. On the other hand, it'd still be easier to just post you config.

Yes, by enabling that option in the kernel the XTS module became available in the menuconfig and config file. Otherwise it's just no there.