multi-user shared state

multi-user shared state

[Luke (Lucas) Starrett]

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Hi,

I'm trying to understand the feasibility of shared-state across multiple users in a development environment.  Does anyone have first-hand experience with this?  Am I asking for trouble?

If this is expected to work, a secondary question would be whether or not shared-state on a NFS mounted path works.  Any thoughts?

Thanks,

Luke Starrett


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Re: multi-user shared state

[Aníbal Limón]

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Hi Luke,

Comments below,

Best regards,
     alimon

[1] https://autobuilder.yoctoproject.org/
[2] http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder/

On 10/06/15 14:25, Luke (Lucas) Starrett wrote:
> Hi,
>
> I'm trying to understand the feasibility of shared-state across multiple users in a development environment.  Does anyone have first-hand experience with this?  Am I asking for trouble?

It is feasible some the sstates can be generated using Yocto Autobuilder 
[1] [2] that support setup of various builder machines one as 
controller/worker and workers, things to
consider are:

  * Network bandwidth: Shared states works good on LAN environments.
  * Yocto Autobuilder and Developers Distro's: Shared states generates
    packages that are dependent on the distro like native ones, for use
    100% of shared state is needed to use the same distro.

>
> If this is expected to work, a secondary question would be whether or not shared-state on a NFS mounted path works.  Any thoughts?

The common setup consist in a one machine that acts as a 
controller/worker and shared the sstate and downloads to the workers 
using NFS for Developer usage it's better to share with
HTTP to avoid problems with the filesystem permissions.

>
> Thanks,
>
> Luke Starrett
>
>
>
>


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Re: multi-user shared state

[Robert Berger]

Hi,

On 06/10/2015 10:25 PM, Luke (Lucas) Starrett wrote:
> Hi,
> 
>  
> 
> I’m trying to understand the feasibility of shared-state across multiple
> users in a development environment.  Does anyone have first-hand
> experience with this?  Am I asking for trouble?

Have a look here [1] 3.2.1.2. Core System Development, and [2]

I did have troubles in the past. When I built e.g. for 2 different
boards both using the same compiler and the same sstate funny things
happened when 2 machines tried to work on the same package at the same
time. But everything should be fine as long as things work sequentially.
Don't know if the sstate mechanism works concurrently in the meantime.

> 
>  
> 
> If this is expected to work, a secondary question would be whether or
> not shared-state on a NFS mounted path works.  Any thoughts?

shared state works (and as a matter of fact everything on an nfs share
would work)

> 
>  
> 
> Thanks,
> 
>  
> 
> Luke Starrett     
> 
>  

[1] http://www.yoctoproject.org/docs/1.8/dev-manual/dev-manual.html
[2]
http://www.yoctoproject.org/docs/1.8/ref-manual/ref-manual.html#shared-state-cache
> 
> 
> 
> -- 
> 

Regards,

Robert

..."Teaching of beginners should be done by a master, not by a hack." -
Deming

My public pgp key is available,at:
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x90320BF1