[9fans] a sure easy way to try out kernel stuff

[9fans] a sure easy way to try out kernel stuff

[ron minnich]

I think I sent this before, but it's so nice I am sending it again.

Scenario: an EPIA with linuxbios and plan 9 in flash. cpu is named cpu50.

You want to muck with the kernel and debug it. Easy.

. bind_test_namespace
cd /sys/src/9/pc
mk 'CONF=whatever'
cpu -h cpu50
echo 'reboot /path/to/9whatever' > /dev/reboot

boom. 9 boots 9. takes 5 seconds. If it blows up, cpu is back in 10
seconds.

Add this to the 20 seconds build time (MAX!) for plan 9, and kernel
hackery is now as easy as normal program hackery -- almost.

Very very nice. Hats off to /dev/reboot.

ron

Re: [9fans] a sure easy way to try out kernel stuff

[Dick Davies]

ron minnich wrote:

> I think I sent this before, but it's so nice I am sending it again. 
> 
> Scenario: an EPIA with linuxbios and plan 9 in flash. cpu is named cpu50.

 > You want to muck with the kernel and debug it. Easy.
 >
 > . bind_test_namespace
 > cd /sys/src/9/pc
 > mk 'CONF=whatever'
 > cpu -h cpu50
 > echo 'reboot /path/to/9whatever' > /dev/reboot
 >
 > boom. 9 boots 9. takes 5 seconds. If it blows up, cpu is back in 10
 > seconds.

Nice - this is the 9grid cluster, right?
Do you have a howto anywhere for your linuxbios voodoo?

Re: [9fans] a sure easy way to try out kernel stuff

[ron minnich]

On Mon, 1 Mar 2004, Dick Davies wrote:

> Nice - this is the 9grid cluster, right?
> Do you have a howto anywhere for your linuxbios voodoo?

I have to update the wiki ... andrey was talking about finding a way to 
provide ituners pre-loaded, we'll see.

Now andrey can get mad at me for letting cat out of bag.

ron

Re: [9fans] a sure easy way to try out kernel stuff

[andrey mirtchovski]

> Now andrey can get mad at me for letting cat out of bag.

1. you buy the ituner
2. we send you a linuxbios image to flash the bios with
3. we send you a linuxbios-enabled cpu kernel to boot
4. ???
5. profit!

but seriously, nobody (i think) is going to attempt selling
plan9-certified hardware unless you can use it as terminals, which we
can't do with the ituners yet...

andrey

[9fans] Re: a sure easy way to try out kernel stuff

[boyd]

>> Now andrey can get mad at me for letting cat out of bag.
> 
> 1. you buy the ituner
> 2. we send you a linuxbios image to flash the bios with
> 3. we send you a linuxbios-enabled cpu kernel to boot
> 4. ???
> 5. profit!

send me one. 

Re: [9fans] a sure easy way to try out kernel stuff

[lucio]

> but seriously, nobody (i think) is going to attempt selling
> plan9-certified hardware unless you can use it as terminals, which we
> can't do with the ituners yet...
> 
I dunno, maybe you can sell them as hosted servers.  I'm currently
looking at installing a server at a hosting site, with a WAN link to
my office/network.  I'm not convinced that with a bit of local disk
(10GB of 3½" drive, say) a Plan 9 ituner would not be a serious
contender.  Specially if two of them can fit into a 1U bracket.

Just a thought.

++L

Re: [9fans] a sure easy way to try out kernel stuff

[Matthias Teege]

On Mon Mar  1 16:41:47 GMT 2004, mirtchov@cpsc.ucalgary.ca wrote:
> plan9-certified hardware unless you can use it as terminals, which we

Small terminal would be cool.
Matthias