[Spread-users] Read_form2 error

Jonathan Stanton jonathan at cnds.jhu.edu
Wed Oct 20 14:04:00 EDT 2004

I think the problem is that you have different spread.conf files on the 
different machines (i.e. you added ct-srvapp-06 to the spread.conf on 
that machine, but the 'older' ct-srvwebin-01 machine still has the older 
spread.conf without the new ct-srvapp-06. 

If my supposition is correct, then that is the likely cause. Spread 
requires that all spread.conf files used by a set of daemons are 
identical (at least as far as the Spread_Segment declarations).

Because of this, if you want to add new machines to a running 
spread.conf file, you have to restart all of the daemons with the new 
file. Some people work around this by adding all the machines they think 
they 'might' need in the future to the file from the beginning, then all 
you have to do is start a new dameon and all of the currently running 
ones will recognize it without a restart.

If you verified that they are all using the same file, then let me know 
and I'll see what else could cause this.



On Wed, Oct 20, 2004 at 12:28:58PM -0400, David Avraamides wrote:
> Hi,
> I just tried to add one more server (ct-srvapp-06) to our spread.conf
> file and start up a daemon on there. Its working on the new machine and
> two of the older machines, but one of the older machines
> (ct-srvwebin-01, where it was always running fine) is failing to start.
> I'm getting this "form" error when I run it interactively:
> ip_init: using file: spread.access_ip
> Conf_init: using file: spread.conf
> Successfully configured Segment 0 [] with 3 procs:
>               ct-srvwebin-01:
>                 ct-srvmon-01:
>                 ct-srvapp-06:
> Successfully configured Segment 1 [] with 1 procs:
>                    ct-dev-01:
> Read_form2: no such id 168427892
> Exit caused by Alarm(EXIT)
> I don't understand what this means and how adding one more machine to
> the segment could cause such a problem. Here's the config file I'm
> using:
> Spread_Segment {
> 	ct-srvwebin-01
> 	ct-srvmon-01
> 	ct-srvapp-06
> }
> Spread_Segment {
> 	ct-dev-01
> }
> Thanks in advance,
> -Dave
> ____________________________________
> David Avraamides
> Severn River Capital Management
> David.Avraamides at SevernRiverCapital.com
> v: 203.971.3681
> f: 203.971.3615

Jonathan R. Stanton         jonathan at cs.jhu.edu
Dept. of Computer Science   
Johns Hopkins University    

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