[9fans] raspberry pi root over tcp

[9fans] raspberry pi root over tcp

[James A. Robinson]

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Hi folks,

I can boot a raspberry pi using its local fossil, and I can
mount a remote fileserver using 9fs once it is booted. Next,
I wanted to try and mount the filesystem as the pi's root.

Based on this

http://man.cat-v.org/plan_9/8/plan9.ini
http://man.cat-v.org/plan_9/8/boot

I tried using the following to mount the root off a 9atom
file server I have running on 10.0.1.200:

bootargs=tcp!10.0.1.200!564

Per the discussion I had with folks here earlier, I've set
the same host owner, password, and secstore on both
machine.  I want this raspberry pi to act as an auth
server.  I had originally intended for it to be a standalone
auth server, but based on input from folks I want to see
whether or not I can mount the auth server's root from
the fileserver.

Upon trying to boot the pi prompted for root, selected the
default (tcp) after 5 seconds, and then threw this:

panic: boot process died: undefined instruction: pc 0x605c

before rebooting itself.  I won't get a chance to dig into it
until later this weekend, but wanted to ask if anyone had
seen this themselves and knew what  I was doing wrong.


Jim

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Re: [9fans] raspberry pi root over tcp

[Steve Simon]

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hi,

i haven't tried using a pi as an authority server, i have run one as a disk less terminal booting off my file server.

i will try this again tonight as i have been meaning to do so,
i will report back later...

-Steve

> On 24 Nov 2016, at 17:48, James A. Robinson <jim.robinson@gmail.com> wrote:
> 
> Hi folks,
> 
> I can boot a raspberry pi using its local fossil, and I can
> mount a remote fileserver using 9fs once it is booted. Next,
> I wanted to try and mount the filesystem as the pi's root.
> 
> Based on this
> 
> http://man.cat-v.org/plan_9/8/plan9.ini
> http://man.cat-v.org/plan_9/8/boot
> 
> I tried using the following to mount the root off a 9atom
> file server I have running on 10.0.1.200:
> 
> bootargs=tcp!10.0.1.200!564
> 
> Per the discussion I had with folks here earlier, I've set
> the same host owner, password, and secstore on both
> machine.  I want this raspberry pi to act as an auth
> server.  I had originally intended for it to be a standalone
> auth server, but based on input from folks I want to see
> whether or not I can mount the auth server's root from
> the fileserver.
> 
> Upon trying to boot the pi prompted for root, selected the
> default (tcp) after 5 seconds, and then threw this:
> 
> panic: boot process died: undefined instruction: pc 0x605c
> 
> before rebooting itself.  I won't get a chance to dig into it
> until later this weekend, but wanted to ask if anyone had
> seen this themselves and knew what  I was doing wrong.
> 
> 
> Jim
> 

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Re: [9fans] raspberry pi root over tcp

[Richard Miller]

> panic: boot process died: undefined instruction: pc 0x605c

I bet that's a SWPW instruction - valid for armv5, deprecated
for armv6, and illegal for armv7.

You probably want to apply patch/armv7-atomic on your server
and rebuild the arm binaries.

If you're booting any old armv5 machines from the same server,
their kernels will need updating with that patch too.

Re: [9fans] raspberry pi root over tcp

[James A. Robinson]

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On Thu, Nov 24, 2016 at 11:11 AM, Richard Miller <9fans@hamnavoe.com> wrote:
>
> > panic: boot process died: undefined instruction: pc 0x605c
>
> I bet that's a SWPW instruction - valid for armv5, deprecated
> for armv6, and illegal for armv7.
>
> You probably want to apply patch/armv7-atomic on your server
> and rebuild the arm binaries.

​Thank you, that was it.

Jim​

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