https://github.com/aekhv/qnvmeblockdevice
MiniNVMe user application library
https://github.com/aekhv/qnvmeblockdevice
cpp linux nvme qt
Last synced: 6 months ago
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MiniNVMe user application library
- Host: GitHub
- URL: https://github.com/aekhv/qnvmeblockdevice
- Owner: aekhv
- License: gpl-2.0
- Created: 2024-12-10T10:55:40.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2024-12-12T11:13:09.000Z (10 months ago)
- Last Synced: 2024-12-12T12:23:31.428Z (10 months ago)
- Topics: cpp, linux, nvme, qt
- Language: C++
- Homepage:
- Size: 82 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# QNvmeBlockDevice
## Description
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.
## How to build
Just run Qt Creator and open the project file (.pro), then press Ctrl+B. As result a library file (.a) will be generated.
## How to use
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.
## PCIe Hot-Plug important notes for modern PC mainboards
To make PCIe Hot-Plug work some conditions must be fulfilled:
1. Use Linux kernel version 6.x.
2. You have to use system chipset that supports PCIe Hot-Plug capability. Type in terminal `sudo lspci -vv | grep HotPlug`. If you see `HotPlug+` in output it means some of the PCIe slots are support Hot-Plug. Of course you have to use these slots only.
3. 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-app` for details.
