OsProcessStarter - posix_spawn() failed. errno 13

[Joachim Tuchel]

Hi again,

after I've head good success with OsProcessStarter and friends in WIndows and Linux in a development image, I am now having trouble starting external processes on a headless test machine. I guess I am having a problem somewhere outside of VAST, but am not sure where to look...

This is what gets written to the walkback:

OsProcessesApp class>>#convertPrimErrorArrayToException:then:
  receiver = OsProcessesApp
  arg1 = (13 'ERROR: posix_spawn() failed. errno: 13
ERROR: posix_spawn() failed. errno: 13
')
  arg2 = [] in OsVastSubprocess>>#execute
  temp1 = Signal on Exception: (ExOsProcessException) An exception has occurred
OsVastSubprocess>>#execute
  receiver = {pid:  cmd: ...}
  temp1 = (13 'ERROR: posix_spawn() failed. errno: 13
ERROR: posix_spawn() failed. errno: 13
')

• I checked that esproclauncher is in the /bin directory of the server runtime.
• I found that in the /bin directory of the server runtime there is no symbolic link named libc.so, so I created it, just in case this causes troubles (but I guess teh VM wouldn't get very far anyways if that was the problem).
• I checked that the command and arguments are correct and run correctly from the command line
  

What can I check next? The test system runs the image as root, so I guess there is not much of a chance that this is a file permission issue....

Any ideas?

Joachim

[Mariano Martinez Peck]

Hi Joachim,

Quick reply... could you try doing a "chmod +x esproclauncher" ?

Thanks, 

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Mariano Martinez Peck Senior Software Engineer  mp...@instantiations.com  @MartinezPeck  /mariano-martinez-peck  instantiations.com

[Joachim Tuchel]

Mariano,

That was it, thanks!

(why on earth didn't I think of this...? *headscratch*)

[Joachim Tuchel]

Just an idea, because I might not be the last to stumble upon this. Maybe you can add a sentence about this to the documentation

https://www.instantiations.com/vast-support/documentation/1002/#page/pr/OsProcessesApp-1.html#

The page already says:

IMPORTANT: On Linux, make sure to distribute the VAST-provided binary 'esproclauncher' with packaged runtimes

Maybe you could just add "and make sure it has execute privileges (chmod +x esproclauncher)"

I had checked it's there (and it is if you just unzip the sl package), but since most files in that folder are not executable, there was no bell ringing in my head....

Joachim

[Mariano Martinez Peck]

Hi Joachim,

Thanks for the suggestion. In fact, I think it's a problem on our end as we are NOT shipping the files with the correct x permission on the server runtime distribution (with the normal dev image installer it is correct). This should be fixed in the next release of the product. 

Thanks for reporting! 

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[Joachim Tuchel]

Hi Mariano,

good to know it's going to be fixed in the next release. So I am glad I asked instead of researching more about posix_spawn().
Until that's done, a hint in the docs wouldn't hurt....

Joachim