Re: [HTCondor-users] UNC and mapped drive misunderstanding (not blocking issue)

[Sean Milligan <Sean.Milligan@xxxxxxxxxxxxx>]

Mathieu,

I also tried your batch file and then searched for the reason and a workaround. I found the reason but was unable to find a permanent workaround.

Here are some links to explanations of the reason with the first one being the most concise:
	https://support.microsoft.com/en-us/kb/303308
	https://technet.microsoft.com/en-us/library/ee844140(v=ws.10).aspx - This one mentions a registry setting - I tried this and it didn't help under Condor but it did locally with an elevated command prompt.
	https://blogs.msdn.microsoft.com/cjacks/2007/02/19/mapped-network-drives-with-uac-on-windows-vista/
	https://support.microsoft.com/en-us/kb/937624

The only workaround I found was to add the net use command into the batch file but I had to keep it in the file as commenting it out and submitting another job didn't restore access, so this could be shortened to not include the /persistent:yes option.
	net use s: \\fileserver\share /persistent:yes

It's unfortunate that we cannot use the mapped drives without mapping them in the job but it appears to be a Windows limitation and not related to Condor. We are stuck using unc paths which is also tricky because of Windows use of the backslash path separator (\) so I have job arguments that look like this "-source \\\\\\\\fileserver\\share\\image.jpg" because the backslash is also treated as the escape character and I lose every other character so I need this to arrive as \\\\fileserver\share\image.jpg when it gets to my application.


-----Original Message-----
From: HTCondor-users [mailto:htcondor-users-bounces@xxxxxxxxxxx] On Behalf Of Mathieu PeyrÃga
Sent: Wednesday, January 20, 2016 7:40 AM
To: HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
Subject: [HTCondor-users] UNC and mapped drive misunderstanding (not blocking issue)

Hello again,

after solving my initial issues while running HTCondor under Windows, I can now achieve the aimed goal :

I'm running a pool of machine which all access the same shared storage while running the jobs with RunAsOwner = true

Im using the small job.bat file right now which just does :

whoami
dir z:
net use

for testing purposes

All machines have the z: drive mapped to \\192.168.1.120\Share which is the shared storage directory used

>From the command line of all the machines in the pool the following command :

Z:\test_condor>net use
Les nouvelles connexions seront mÃmorisÃes.


Ãtat         Local     Distant                   RÃseau

-------------------------------------------------------------------------------
OK           Z:        \\192.168.1.120\Share     Microsoft Windows Network

La commande s'est terminÃe correctement.

gives the same result, the drive have read write access and is mapped using the same login/password as the HTCondor ALLOW_CONFIG account.

The drives also shows in Windows Explorer without any issue.

Now, the output of the job.bat is (identical on all machines) :

lutece\mathieu (or lugdunum\mathieu or tolosa\mathieu ... depending on the machine that did actually run the job)

Les nouvelles connexions seront mâmorisâes.


Âtat         Local     Distant                   Râseau

-------------------------------------------------------------------------------
Non disponib Z:        \\192.168.1.120\Share   Microsoft Windows Network
La commande s'est terminâe correctement.

First, the output when going through the HTCondor pipeline is loosing the initial "local" (here French localization) and all accents are lost in the output.

The second thing is that the runasowner process works and is launched from the right accoung (which is good) but the Z drive mapping is also "lost" or at least unusable from the current environment :

The first column of net use command do not shows "OK" and the dir z:
command fails with error (still with accents issue) :

Le chemin d'accÅs spâcifiâ est introuvable.

(traduction : The specified path could not be found)

I already have a workaround for this while using the full UNC path instead of drive mapped path, but I still can not understand while the same user on the same machine can not fully use mapped drive.
This is most probably more a Windows / environment issue than a HTCondor issue, but another workaround than using UNC would be nice.

Also for clues about keeping the computer localization and the accents in outputs.

Best regards,

Mathieu
--
tel : +33 (0)6 87 30 83 59
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