The QNvmeBlockDevice user application library allows to communicate with a NVMe device over the MiniNVMe kernel module. It is Qt based library written on C++ language.
Just run Qt Creator and open the project file (.pro), then press Ctrl+B. As result a library file (.a) will be generated.
I didn't wrote detailed documentarion because I'm a lazy ass. So take a look at the mininvme-test-app project, file mainwindow.cpp includes all the interesting things.
To make PCIe Hot-Plug work some conditions must be fulfilled:
- Use Linux kernel version 6.x.
- You have to use system chipset that supports PCIe Hot-Plug capability. Type in terminal
sudo lspci -vv | grep HotPlug. If you seeHotPlug+in output it means some of the PCIe slots are support Hot-Plug. Of course you have to use these slots only. - At the boot time any NVMe device must be attached already, in any words a BIOS must to initialize PCIe bridge and attached NVMe device. You can use any working NVMe device as a kind of dummy. As soon as operating system is loaded you can remove dummy device and then attach faulty device. See
mininvme-test-appfor details.
