OSError: [Errno 26] Text file busy during subprocess.check_call() :seems os dependent

[Thomas L. Shinnick]

At 03:46 PM 12/30/2010, harijay wrote:
>Hi,
>I am writing some multithreaded code which aims to automate three
>sequential data processing applications and distribute the processing
>on my 16GB RAM, 64 bit Ubuntu box running Python 2.6.5
>
>The basic class that orchestrates these jobs use Queue.Queue() to feed
>the product of the first job into the Queue for the next job.
>
>Each Thread receives a dynamically generated shell script from some
>classes I wrote and then runs the script using
>
>subprocess.call(["shell_script_file.sh"])

You say dynamically generated.  Any chance you are (re)using the same 
filename each time?  Is it possible that two uses of that filename 
could occur at the same time?  That is, is it possible that at the 
same time while one process is running from the script file, another 
process is trying to re-write the script file?  And so maybe you need 
to have dynamically generated and unique filenames

Most often I see references to binary executable files for the error 
message, but I've also seen references to script files, e.g.
     http://www.cyberciti.biz/faq/binbash-bad-interpreter-text-file-busy/

>I tested the code on a mac laptop and also on ubuntu. Curiously on Mac
>OSX 32 bit Core duo running snow leopard, the code always runs fine.
>However on my ubuntu box I get sporadic errors detailed below.
>
>I tried replacing the
>subprocess.call() with
>
>subprocess.Popen(["shellscriptfile.sh"],stdout=open("unique_process_id.log","w"),stderr=open("unique_error_log.log","w")
>
>But I get the same "OSError: [Errno 26] Text file busy"  error
>
>Everytime I run the same job queue a different part of the job fails.
>
>Unfortunately I dont see anybody else reporting this OSError. ANy help
>in troubleshooting my "newbie" thread code will be greatly
>appreciated.
>
>Thanks
>hari
>
>The orchestrator class is at:
>https://github.com/harijay/auriga/blob/master/process_multi.py
>
>A sample thread subclass is at :
>https://github.com/harijay/auriga/blob/master/scatomtzrunthread.py
>
>
>Detailed error:
>
>Exception in thread Thread-1:
>Traceback (most recent call last):
>   File "/usr/lib/python2.6/threading.py", line 532, in
>__bootstrap_inner
>     self.run()
>   File "/home/hari/Dropbox/auriga/scatomtzrunthread.py", line 28, in
>run
>     stat = subprocess.call([file])
>   File "/usr/lib/python2.6/subprocess.py", line 480, in call
>     return Popen(*popenargs, **kwargs).wait()
>   File "/usr/lib/python2.6/subprocess.py", line 633, in __init__
>     errread, errwrite)
>   File "/usr/lib/python2.6/subprocess.py", line 1139, in
>_execute_child
>     raise child_exception
>OSError: [Errno 26] Text file busy