openeuler/drbd-kernel repository overview

⁠Quick reference

• The official DRBD kernel module docker image.

• Maintained by: openEuler CloudNative SIG⁠.

• Where to get help: openEuler CloudNative SIG⁠, openEuler⁠.

⁠DRBD-kernel | openEuler

Current DRBD-kernel docker images are built on the openEuler⁠. This repository is free to use and exempted from per-user rate limits.

DRBD, developed by LINBIT, is a software that allows RAID 1 functionality over TCP/IP and RDMA for GNU/Linux. DRBD is a block device which is designed to build high availability clusters and software defined storage by providing a virtual shared device which keeps disks in nodes synchronised using TCP/IP or RDMA. This simulates RAID 1 but avoids the use of uncommon hardware (shared SCSI buses or Fibre Channel). This image contains the kernel side of DRBD: the drbd kernel module together with its tcp, rdma and lb-tcp transport modules, built from the upstream DRBD source. The user space utilities (drbdadm, drbdsetup, drbdmeta, ...) are shipped separately in the openeuler/drbd image, which is the drbd-utils package of this repository.

Learn more on DRBD Documentation⁠.

⁠Supported tags and respective Dockerfile links

The tag of each drbd-kernel docker image is consist of the version of DRBD and the version of basic image. The details are as follows

⁠Usage

In this usage, users can select the corresponding {Tag} based on their requirements.

• Pull the openeuler/drbd-kernel image from docker

  docker pull openeuler/drbd-kernel:{Tag}
  

  Copy

• Show the DRBD modules built into the image (works on any host, it only reads the module files)

  docker run --rm openeuler/drbd-kernel:{Tag}
  

  Copy

• Load the modules on a host which runs the kernel they were built for

  docker run --rm --privileged -v /lib/modules:/lib/modules openeuler/drbd-kernel:{Tag} modprobe drbd
  

  Copy

  The modules are installed under /lib/modules/<kernel release>/updates/ and are compiled against the kernel-devel shipped with this openEuler release, so the module vermagic has to match the kernel of the host - modinfo prints it. The openeuler/drbd-kernel image is used to verify the integration between the upstream DRBD kernel component and openEuler.

⁠Question and answering

If you have any questions or want to use some special features, please submit an issue or a pull request on openeuler-docker-images⁠.