Support linux 7.0

[kaysond]

Description

Support for building with linux 7.0

Reason

Proxmox VE 9.2 depends on Linux 7.0 so OpenCAS is not usable with it

[robertbaldyga]

Hi @kaysond ! We just released v26.03.3 with kernel 7.0 support.
https://github.com/Open-CAS/open-cas-linux/releases/tag/v26.03.3

[kaysond]

@robertbaldyga there's some compilation issue on proxmox 7.0 kernels. See attached.

make.log

[robertbaldyga]

Hi @kaysond ! I tried it on PVE 9.2 and it worked fine for me. I tried both simple make as well as DKMS installation, both working correctly on my setup.

I took a look at your log, and it seems to me that there is some problem with kernel headers in your setup. ./configure step should resolve to a proper implementation based on the kernel headers (the script which exposed this issue is configure.d/1_page_flags.conf).

[kaysond]

Hi @kaysond ! I tried it on PVE 9.2 and it worked fine for me. I tried both simple make as well as DKMS installation, both working correctly on my setup.

I took a look at your log, and it seems to me that there is some problem with kernel headers in your setup. ./configure step should resolve to a proper implementation based on the kernel headers (the script which exposed this issue is configure.d/1_page_flags.conf).

Did you build for the running kernel? I'm building for another kernel so when I reboot, opencas doesn't fail.(Current: 6.x, Build for: 7.x). My guess is ./configure is using the running kernel by default, where as the make step seems to get passed the specified kernel:

# command: cd /var/lib/dkms/open-cas-linux-modules/26.03.3.1036.release/build/ && /var/lib/dkms/open-cas-linux-modules/26.03.3.1036.release/build/./configure

# command: make -j6 KERNELRELEASE=7.0.14-6-pve -j -C modules/ KERNEL_VERSION=7.0.14-6-pve

will try some more debug this afternoon

[robertbaldyga]

Ahh, I see the problem. In that case you also need to set KERNEL_DIR for ./configure. That should do the trick:

KERNEL_DIR=/lib/modules/7.0.14-6-pve/build ./configure

[kaysond]

Ahh, I see the problem. In that case you also need to set KERNEL_DIR for ./configure. That should do the trick:

KERNEL_DIR=/lib/modules/7.0.14-6-pve/build ./configure

Can't do that with dkms though right? If its that simple then #1787 is way over engineered. But lmk if youd'd like me to fix it.

[robertbaldyga]

In DKMS the major issue is that you can't set variable like that in PRE_BUILD so you need to either wrap it into a small separate script, or give the ./configure an argument. In your PR you took the latter approach, which is fine by me.