[lustre-discuss] Patch of Lustre-2.16.1 to Linux kernel 6.12.57

[Shaun Tancheff]

On 12/20/25 11:08, Tung-Han Hsieh via lustre-discuss wrote:
> Greetings,
>
> Recently we were requested to install Lustre client to a new machine, 
> installed Debian-13.2 (trixie), with Linux kernel 6.12.57. We install 
> it from compiling the source code. During installation, we encountered 
> a lot of compiling errors, due to changes of kernel API from version 
> 5.X.X to 6.12.X. We struggled quite a lot to update the code of 
> Lustre, and finally came out a patch, as shown in the attachment. I 
> would like to submit this patch to the Lustre developer team for 
> review and test, and finally being committed to the future versions of 
> Lustre. This is very important, because as newer machines shipped, we 
> are forced to install newer versions of Linux OS, and Linux kernel. We 
> hope that Lustre file system could work well in these new environments.
>
The patch does not look too problematic, however you should be aware 
that Lustre 2.17-rc2 is currently building fine with 6.15, not sure what 
the state of back ports of kernel support are for Lustre 2.16.

FWIW kernel support for 6.16 and 6.17 are enqueue and 6.18 is 
essentially done awaiting the new fs mount API changes James has done (I 
have not yet had a chance to test them together since I am traveling).

> The steps of compiling Lustre in our new machine is following:
>
> 1. Use "apt install" to install necessary code building packages, such 
> as build-essential, gcc,
>     make, autoconf, 
> libyaml-dev, uuid-dev, libblkid-dev, libnl-3-dev, libudev-dev, libkeyutils-dev, 
>
>     libmount-dev, python3-dev, libnl-genl-3-dev, libtool, ...., etc.
>
> 2. Install the kernel source, which is the version of the current 
> running kernel:
>     apt install linux-headers-6.12.57+deb13-amd64
>
> 3. Download Lustre source 2.16.1 (the newest version we have found), 
> and apply the patch
>     shown in the attachment.
>
> 4. Start code building:
>    cd lustre-2.16.1
>    ./configure --prefix=/opt/lustre 
> --with-linux=/usr/src/linux-headers-6.12.57+deb13-amd64 
> --disable-server --enable-mpitests=no
>    make
>    make install
>
> Now we can mount the Lustre file system with this command:
>
> mount -t lustre -o flock <mds_IP>@tcp:/chome /home
>
> where Lustre servers run Lustre-2.15.3. From the preliminary tests, it 
> seems OK. But we are not confident that our patch is OK. We still need 
> to test more extensively. So we hope that Lustre developer team could 
> help to review this patch.
>
> Best Regards,
> T.H.Hsieh
>
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