Challenge
When running a backup job in Veeam Agent for Linux, the job fails with this error message:
Failed to load module [veeamsnap] with parameters [zerosnapdata=1 debuglogging=0]
Cause
The veeamsnap module has not been built and installed.
Solution
The veeamsnap is a DKMS module. DKMS modules have 4 states:
- not in tree;
- added;
- built;
- installed.
In general, the mentioned error message means that the veeamsnap module hasn't been installed. You can check its status by running the following command:
dkms status
If the output contains a line like veeasnap added, this message means that the module has been added, but hasn't been built and hasn't been installed. In the most cases, this status means that your OS does not have the corresponding kernel-devel and kernel-headers for the current kernel. When the missing packages are installed, you can re-install Veeam Agent for Linux in order to execute the DKMS hooks which will rebuild and install veeamsnap. Alternatively, you can rebuild veeamsnap manually by executing the following commands:
dkms remove -m veeamsnap -v 1.0.0.944 --all dkms build -m veeamsnap -v 1.0.0.944 dkms install -m veeamsnap -v 1.0.0.944
More Information
There is an extended version of this article here. It contains detailed explanations and examples applicable to different Linux distributions.