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sblkdev

Simple Block Device Linux kernel module

Contains a minimum of code to create the most primitive block device.

The Linux kernel is constantly evolving. And that's fine, but it complicates the development of out-of-tree modules. I created this out-of-tree kernel module to make it easier for beginners (and myself) to study the block layer.

Features:

  • Compatible with Linux kernel from 5.10 to 6.0.
  • Allows to create bio-based and request-based block devices.
  • Allows to create multiple block devices.
  • The Linux kernel code style is followed (checked by checkpatch.pl).

How to use:

  • Install kernel headers and compiler deb: apt install linux-haders gcc make or apt install dkms rpm: yum install kernel-headers

  • Compile module cd ${HOME}/sblkdev; ./mk.sh build

  • Install to current system cd ${HOME}/sblkdev; ./mk.sh install

  • Load module modprobe sblkdev catalog="sblkdev1,2048;sblkdev2,4096"

  • Unload modprobe -r sblkdev

  • Uninstall module cd ${HOME}/sblkdev; ./mk.sh uninstall

Feedback is welcome.