团队构建期间TFS 2013工作区映射错误

Question

When we do team builds using tfs 2013 we occasionally get the following error:

Exception Message: Unable to create the workspace '41_9_UKBOLTFS6' due to a mapping conflict. You may need to manually delete an old workspace. You can get a list of workspaces on a computer with the command 'tf workspaces /computer:%COMPUTERNAME%'. 
Details: The path C:\xxx\xxx\xxx is already mapped in workspace 41_9_UKBOLTFS6. (type MappingConflictException)

If we kick off a new build it may succeed, if not we try again and eventually it works without any changes.

I have seen very similar questions posted on stackoverflow about this but non where the workspaces it is complaining about are the same '41_9_UKBOLTFS6'.

We migrated most of our builds from TFS2010 but not all and we never had this issue before.

Does anyone know what is going on?

Answer 1

This occurs (as the error suggests) when you have a workspace clash on the build server. Workspaces are saved as configuration values in the TFS database so clashes are possibly caused by:

• you have created a new build definition with the same name as a previous build definition.
• some part of your workspace name (or an artifact within your project) is over 260 chars
• build definition is not using $(sourcedir) macro in System Settings tab

More details are explained in this article

Possible work-around:

Rename your build definition to something unique.

Answer 2

Looks like you have multiple team builds mapped to the same local directory. Make sure that the Working Directory in all your agents are unique and there is no absolute path in workspace settings of your build definitions

Answer 3

I've run to this issues and blogged about my solution without renaming the build definition. Check it out here: https://christiaanmolendijk.nl/2016/05/23/before-stressing-out-tfs-cache-folder-on-build-server/

Summary of the link:

1. Go to cache folder: {userprofile}\\AppData\\Local\\Microsoft\\Team Foundation\\{version}\\Cache
2. Edit file VersionControl.config in Volatile folder
3. Then go back to the cache folder at {userprofile}\\AppData\\Local\\Microsoft\\Team Foundation\\{version}\\Cache and delete the folders with a GUID as name.