Notes200905DevSummit [FreeBSD WIKI]

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===== Currently in svn/head: =====

Kernel compilable as:

  * VIMAGE_GLOBALS – no indirections

  * default – virtualized variables in global structs

  * VIMAGE – virtualization structs dynamically allocated

===== Impending changes: =====

  * Management API merge from p4 vimage branch – will allow for vimages to be created / deleted / ifnets reassigned

  * Interim solution only - will be superseded by new jail framework when ready.

===== Issues: =====

  * Many subsytems not touched yet but on todo list: SCTP, NFS, pf / ALTQ, dummynet, mroute...

  * ifnet <-> devfs interaction

  * version checking of vnet container layouts at both compile and run / kldload time, without overloading FreeBSD_version, preserving KBI during major releases but without having hands tied for extensions

  * virtualization (not only vnet) of PCPU state

  * per-vnet vs. global uma zones for various stuff

  * mbufs: per-vnet or global pools / accounting etc.

  * bailing out of vnet initializations that fail due to resource shortages

  * getting rid of kldsym / kmem legacy in network stack

  * dealing with TOE NIC hardware

  * API for controlling remote vnets

  * performance

{{vimage/notes200905devsummit/vimage_structs.gif?linkonly|vimage_structs.gif}}