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https://github.com/cernvm/cernvm-kernel

Build configuration for µCernVM Linux kernel and busybox
https://github.com/cernvm/cernvm-kernel

Last synced: about 1 month ago
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Build configuration for µCernVM Linux kernel and busybox

Host: GitHub
URL: https://github.com/cernvm/cernvm-kernel
Owner: cernvm
License: gpl-3.0
Created: 2013-09-26T09:43:47.000Z (about 11 years ago)
Default Branch: master
Last Pushed: 2021-05-17T07:04:14.000Z (over 3 years ago)
Last Synced: 2024-08-02T01:27:08.638Z (4 months ago)
Size: 336 KB
Stars: 2
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE

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awesome-repositories - cernvm/cernvm-kernel - Build configuration for µCernVM Linux kernel and busybox (Others)

README

        cernvm-kernel

=============

Contains build configuration for the µCernVM Linux kernel and busybox.

## µCernVM Linux Kernel

The CernVM Kernel is a virtualization friendly Linux kernel.

It is intended to be used by a CernVM guest OS.

In contrast to an (S)LC kernel, it is lightweight and provides the newest

features wrt virtualization and memory management techniques.

Features:

  * Based on vanilla sources

  * (Paravirtualized) device drivers for

     KVM, Xen, VMware, VirtualBox, and HyperV

  * Boots an SL6 OS and possibly other distributions

  * Provides the following options

    - X32 ABI support

    - Kernel SamePage Merging (KSM)

    - Transparent Huge Pages (THP)

    - zRam, zCache, cleancache, frontswap

    - (All) cgroup controllers

    - Aufs3 (patched from aufs upstream)

    - ext2-4, XFS, Btrfs (module), NTFS (module), Fuse (module)

    - Rados block device, CephFS (module)

    - NFS 3, 4, 4.1

    - LVM / device mapper

    - OpenAFS (module, patched in by EC build system)

Kernel, Ramdisk, and modules are 10MB--20MB in size, compared to >100MB of SL6.

After boot, it occupies ~25MB less memory than the SL6 kernel.

## Busybox used in µCernVM

The busybox configuration is not primarily optimized for size

but it is meant to provide a sufficiently comfortable environment to debug µCernVM

## Build Products

Kernel and busybox are built on

[Electric Commander](https://ecsft.cern.ch/dist/cernvm).