200808 DevSummit Cambridge

1. [DONE] Apply the V_ macro prefix:

• NOP (non functional) change.
• Invalidates most of the patches out there.

1.5. Further style changes (NOP) bringing in more infrastructure:

1. Resolve file local statics with conflicting names.
2. Import INIT_VNET_* as NOPs along with net/vnet.h, netinet/vinet.h, netinet6/vinet6.h, netgraph/vnetgraph.h, …, move #defins from vimage.h to those header files, make the macros NOPs in vimage.h.
3. Import “V_SYSCTLs”, make them behave SYSCTLs w/o vimage for the moment. update man pages.

2. Move the globals into a struct (g.v):

• Make sure the macros from step 1.5 are no longer NOPs.
• Bring in per module constructor functions.
• Move globals to structs.
• Make it possible to revert to globals.

3. Apply virtualization (g→v):

• Add destructor functions.
• Add iterator macros.
• Per vimage pointers.
• INIT_VNET_INET would start doing something.

4. Finish more subsystems

• That is where your hands are needed and when you need to know what to do!
• Reorder variables in structs for cache locality.
• James Gritton's management framework.

• Jail is useful for name for virtualization for “branding”
• You have jail safe file systems, but you should be able to only allow some file systems to be mounted in a jail
• Perhaps only allow jexec instead of jattach since jattach is “ugly” and leave things from outside
• You want jails without processes hanging around e.g. if “jails” which just does forwarding
• Perhaps keep jail(8) for compat, and new jcreate(8) for advanced fancy jails. jail(8) is just a jcreate(8) wrapper

http://people.freebsd.org/~bz/200805DevSummit/#vimageII