There is documentation or examples ？

[xiaofeng0303]

make install but unknow how to use to snap my disk /dev/sda

[Fantu]

hi, veeamsnap is deprecated and replaced by blksnap that support newer kernels and there are work in progress for integrate upstream. It have also some documentation.

[SergeiShtepa]

There were no plans to create documentation and tests. All this was created for blksnap.
But if someone has a need for them and a desire to create them in the likeness of what was done for blksnap, I will do a review and accept a pull request.
Although the project is deprecated, it will be useful for systems with old kernels for a long time.