I am trying to run a winrar archive update to a network share, and pipe the output to a logfile like this:
rar.exe u -hepassword -as \\server\share\archive.rar
I can run the command from a command prompt and it works. I put the command in a batch file, and run that from a command promt and it works.
I have attempted to run the batch from a scheduled task (as both an administrator and a backup operator), it starts, creates the log file, winrar starts but fails to update the archive. I does not report any errors either.
In the log file, winrar reports "Updating archive \\server\share\archive.rar
The task scheduler does not show any errors. The server runnning the scheduled task does not report any errors. The server hosting the share does not show any security errors.
Any help appreaciated.
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Hello jeremyu,
Do you run that batch as Administrator or do you use your username?
You should always use the credentials of the user in the task that did successfully run the batch file.
Also keep in mind that due to security reasons the execution of the cmd.exe that is used everytime when a batch file is executed (the command processor) is just permitted for members of the administrators group AND interactive users (i.e. logged on users)
Regards,
Tolomir
Hi Tolomir,
Sorry for the delay, sidetracked by overseaes trip :)
So.. in testing I see you are right. I thought that setting the user as a backup operator would have solved it, since they have "log on as a batch" Group Policy permissions, but obviously not.
Do you know if there is a work around for this at all? Or if there is a GP I can modify? I cannot set this user as an administrator.
Thanks
jeremyu
Hi Tolomir
Sorry, I did put in my question that this is all running on Win Server 2008.
With further experimentation I have found that I can run two scheduled tasks. I can archive locally (using the winrar update command above) using an administrator login, and I can run a copy to the share using the original backup user that I wanted to use.
Unfortunately this creates a bit of file replication, but it gives me the result I was after: Compressed, encrypted data backed up to a network share, using a non administrator account, with a piece of software that does not cost $2000.
This work around works but it still does not explain why winrar has this issue.
I double checked user permissions to the archive file to make sure the backup user could alter the file, but the user is still getting blocked by something.
Looking at the permissions of cmd.exe, all domain users had permissions to read and execute this file, so this was not the issue. It feels like this could be fixed with altering a single group policy somewhere, but I have spent a bit of time fishing for it and still cannot find it.
Well, I have a solution for now. Still missing some explaination of why.
Thanks for your help
Business Accounts
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by: jeremyuPosted on 2008-08-26 at 20:22:03ID: 22321589
Sorry, that command should read :
rar.exe u -hppassword -as \\server\share\archive.rar
thanks