Re: VFS ROADMAP (and vfs01.patch stage 1 available for testing)

["Martin P. Hellwig" <mhellwig@xxxxxxxxx>]

<cut>
>     Also, the abstraction of 'being part of a cluster' does not necessarily
>     imply that a machine's entire resources are devoted to the 'cluster'.
>     It is my intention to allow system resources to be partitioned off so
>     your workstation could be a standalone box but also provide resources
>     (such as a disk partition, memory, cpu, and networking services) to
>     a cluster, or to several clusters.  
>
>     I want it to be as simple as a config file:
>
>     cluster lab_cluster {
> 	hostid "dillon"
> 	disk /dev/ad0s1e as "disk1"
> 	netif fxp0 limit 5mbyte/s
> 	rendezvous [list at least one other machine in the cluster]
> 	cpu nom 50% max 75%
> 	memory nom 64mb
> 	reliability medium
>     }
>
>     cluster home_cluster {
> 	hostid "mylabstation"
> 	link my.home.machine
> 	filesystem "/home/dillon" as "/dillon"
> 	cpu nom 50% max 100%
> 	memory nom 64mb
> 	reliability high
>     }
>
>     One would be able to export raw disk partitions as block devices, or
>     file systems (fully cache coherent within the cluster, managed by
>     the kernel), cpu, memory, etc.
>
>     One would be able to 'push into' a cluster (that is, run a shell or a
>     program that operates 'as part of the cluster' rather then operates 
>     just on the local machine), something like this:
>
>     cexec home_cluster /bin/csh
>
>     or
>
>     cexec home_cluster xterm
>
>     or <grin>:
>
>     cexec lab_cluster startx
>
>     In anycase, we are talking ~2 years down the line for that kind of
>     functionality.  It will happen, though, and the more I progress with 
>     the VFS work the better I'll be able to guage the cluster.

Do you think it will be like a full DragonFlyBSD install but then spread 
on to the clusters so that it is possible to log on to that virtual OS 
the same way like I do now with a physical machine?

--
mph