service.running error under Windows

[John R. Baskwill]

I have a state file that is failing with the following contents to check if the Symantec AntiVirus service is running"

server-SepMasterService:

  service.running:

    - name: SepMasterService

Under debug, an error is returned:

[INFO    ] Executing command 'sc qc "SepMasterService"' in directory 'C:\\Documents and Settings\\Administrator'

[DEBUG   ] output: [SC] QueryServiceConfig FAILED 122:

The data area passed to a system call is too small.

[SC] GetServiceConfig needs 600 bytes

The sc qc command needs a bigger buffer with the bufsize parameter.

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John R. Baskwill, jr...@psu.edu
Systems Analyst, Information Technology Services
Penn State Harrisburg
W303 Olmsted Building
777 West Harrisburg Pike
Middletown, PA 17057-4898
Phone: 717-948-6268
Fax: 717-948-6535

[John R. Baskwill]

I have two other services where the sc command fails because the buffer isn't large enough.

[INFO    ] Executing command 'sc qc "vmware-converter-server-vc"' in directory '

C:\\Users\\admin_jrb28.ACCESS'

[DEBUG   ] output: [SC] QueryServiceConfig FAILED 122:

The data area passed to a system call is too small.

[SC] GetServiceConfig needs 612 bytes

[INFO    ] Executing command 'sc qc "vmware-converter-worker-vc"' in directory '

C:\\Users\\admin_jrb28.ACCESS'

[DEBUG   ] output: [SC] QueryServiceConfig FAILED 122:

The data area passed to a system call is too small.

[SC] GetServiceConfig needs 578 bytes

[David Boucha]

I don't think Salt is doing anything to set the buffer size or anything. Do you know what option or buffer it is referring to?

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Dave Boucha  |  Sr. Engineer

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[John R. Baskwill]

The usage for the 'sc' command is:

sc <server> qc [service name] <bufferSize>

Currently, Salt is running the command:

sc qc "SepMasterService"

This command fails, saying '[SC] GetServiceConfig needs 732 bytes'

The command 'sc qc "SepMasterService" 1000' is successful.

[David Boucha]

John, do you think defaulting to always using 1000 for the buffer would be a problem? Or should we make the buffer size configurable?

[John R. Baskwill]

All of the problems I've seen would be solved with a buffer size of 1000.  If it's just as easy to make it configurable, though, it might prevent some headaches in the future.

[David Boucha]

As seen here: https://github.com/saltstack/salt/pull/8422

After doing a little googling I've push a pull req setting the buffer size to 5000

I think this should fix the problem. If we need to revisit this later to allow for this to be set in the windows service module and the state module, then we'll do that if this continues to be a problem.

What do you think John?

[John R. Baskwill]

The new code produces the command:

sc qc "SepMasterService 5000"

which gives the error message "The specified service does not exist as an installed service."

The command needs to be:

sc qc "SepMasterService" 5000

[David Boucha]

Gah, thank!  I'll fix that immediately.

Dave Boucha  |  Sr. Engineer

Join us at SaltConf, Jan. 28-30, 2014 in Salt Lake City. www.saltconf.com

[David Boucha]

OK, made some fixes here: https://github.com/saltstack/salt/pull/8463

Can you test that, John?  Thanks for your help!

[John R. Baskwill]

It works!  Thanks very much.

[David Boucha]

You're welcome!  Thanks for helping diagnose and find the solution!