[GE users] bug? with -o /nfs/path

Daniel Templeton Dan.Templeton at Sun.COM
Thu Jun 14 00:36:36 BST 2007


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Actually,  it's the shepherd, so instead of fprintf(), you can use 
shepherd_trace() and it will be routed to the trace file in the job 
directory.

Daniel

Daniel

Rayson Ho wrote:
> Indeed.
>
> The shepherd is doing very similar to what you described below. In
> source file daemons/shepherd/builtin_starter.c, function build_path():
>
>   /* Try to get information about 'base' */
>   if( SGE_STAT(base, &statbuf)) {
>      /* An error occured */
>      if (errno != ENOENT) {
>
>      ...
>      ...
>      }
>      return base; /* does not exist - must be path of file to be 
> created */
>   }
>
> I don't have a really busy NFS environment to test the errno value for
> NFS read (is it really ENOENT??), but I assume if we know the value,
> we can easily add a retry loop in the code above.
>
> Since you know C, can you use try adding debug fprintf()s to the code
> above -- but redirect the fprintf output to a file since there is no
> stdout/stderr for daemon processes.
>
> Rayson
>
>
> On 6/13/07, Christopher McCrory <chrismcc at pricegrabber.com> wrote:
>> I suspect sge is doing something like:
>>
>> if "stat $log-dir" ==  a directory
>>  then treat as a directory
>> else
>>  treat as a file
>>
>> without checking for other conditions or retrying a timeout failure.
>>
>> NOTE:  I haven't actually looked at the code, nor am I a very good C 
>> programmer, so my analysis could be either wrong, or very wrong.  :)
>>
>>
>> questions:
>>
>> Does this sound like a SGE bug?
>>
>> Would adding a trailing slash ( qsub -o /nfs/dir/ ) force sge to 
>> treat the argument as a directory and not a file?
>>
>>
>> thanks
>>
>> p.s. SGE has "just worked" for us for the past several years hence my 
>> not posting to this list recently.
>>
>>
>>
>> -- 
>> Christopher McCrory
>>  "The guy that keeps the servers running"
>>
>> To the optimist, the glass is half full.
>> To the pessimist, the glass is half empty.
>> To the engineer, the glass is twice as big as it needs to be.
>>
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>
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