TFS security model in configuration database

by Xavier Dilip Kumar 20. December 2013 06:42

 

Following is the sample query to get the user details associated with the team projects

SELECT TOP (10) PERCENT 
    login.display_name  AS user_name, 
    proj.scope_name     AS project, 
    login_grp.display_name AS user_group

FROM dbo.tbl_security_membership_cache AS membership INNER JOIN
  dbo.tbl_security_identity_cache AS login ON membership.member_id = login.tf_id INNER JOIN
  dbo.tbl_security_projects AS proj INNER JOIN
     dbo.tbl_security_domain AS domain INNER JOIN
       dbo.tbl_security_domain_groups AS grp ON domain.domain_number = grp.domain_number 
       ON proj.domain_number = domain.domain_number
     ON membership.container_id = grp.group_id INNER JOIN
  dbo.tbl_security_identity_cache AS login_grp ON grp.group_id = login_grp.tf_id

ORDER BY user_name, project

 

Tags:

TFS | SQL Server

TFS 2012 and VS 2012 featured with new workspace concept called “local” workspaces

by Xavier Dilip Kumar 19. December 2013 19:19

Explanation:

TFS 2012 and VS 2012 featured with new workspace concept called “local” workspaces.The workspace concept which was available from VS/TFS 2005 - 2010 is called as “server” workspaces. “server” workspaces is the default option while creating a new workspace in VS 2012.

When a local workspace is created, the required data structures will be moved from the TFS server onto the TFS Client. The data structures are local to local machine instead of being hosted on the TFS server. Moving the data structures to local machine gives VS 2012 the ability to perform a number of source control operations without TFS web service calls or active connection to TFS server. The following operations continue to work when the local machine is disconnected from the TFS server.

  • Opening a source-controlled solution
  • Checking out a file for edit
  • adding a new file or folder for add
  • Delete on an existing file or folder
  • Rename on an existing file or folder
  • Monitor pending changes in the workspace
  • Undoing pending changes
  • Diffing your copy of a file with the version of the file your change is pended against
  • The local workspace will not carry read only bit during get source.
  • “Promoting” the candidate adds and/or deletes
  • The local workspace will be invisible to VS 2010 and earlier versions
  • No enforcement of PendChange permission or checkout locks
  • The local workspace can be converted to Server workspace and reverse the same

Drawback on Local workspaces.

Local workspaces have scalability limitations due to their use of the local workspace scanner which checks for edited items.If the workspace has more than 50,000 items, There may be performance problems or "TF400030 errors as operations exceed 45 seconds in duration." may occur

Steps to create a local workspace.

  

 

Tags:

TFS 2012 | Visual Studio 2012

"TF400030: The local data store is currently in use by another operation. Please wait and then try your operation again. If this error persists, restart the application.”

by Xavier Dilip Kumar 19. December 2013 08:36

Exception:

"TF400030: The local data store is currently in use by another operation. Please wait and then try your operation again. If this error persists, restart the application.”

Explanation:

The error occur when using local workspaces in Visual Studio 2012 or later

TFS 2012 and VS 2012 featured with new workspace concept called “local” workspaces.The workspace concept which was available from VS/TFS 2005 - 2010 is called as “server” workspaces 

When a local workspace is created, The required data structures will be moved from the TFS server onto the TFS Client. The data structures are local to local machine instead of being hosted on the TFS server. Moving the data structures to local machine gives VS 2012 the ability to perform a number of source control operations without TFS web service calls. The following operations continue to work when the local machine is disconnected from the TFS server.

  • Opening a source-controlled solution
  • Checking out a file for edit
  • adding a new file or folder for add
  • Delete on an existing file or folder
  • Rename on an existing file or folder
  • Monitor pending changes in the workspace
  • Undoing pending changes
  • Diffing your copy of a file with the version of the file your change is pended against
  • The local workspace will not carry read only bit during get source.
  • “Promoting” the candidate adds and/or deletes
  • The local workspace will be invisible to VS 2010 and earlier versions
  • No enforcement of PendChange permission or checkout locks
  • The local workspace can be converted to Server workspace and reverse the same

Local workspaces have scalability limitations due to their use of the local workspace scanner which checks for edited items.If the workspace has more than 50,000 items, There may be performance problems or "TF400030 errors as operations exceed 45 seconds in duration." may occur

Reconciled operation on the server or deadlock between two operations may also trigger the error.

In Local workspace architecture, only a single operation (thread) can use this local data at a time. If two pieces of system want to use the data store simultaneously – perhaps the Solution Explorer and the Source Control Explorer both want to refresh after an Undo operation was performed – then these two components have to take turns to use the local data store. One will wait for the other to finish, and who gets to go first is arbitrary.

The ‘loser’ of the race has to wait before proceeding, but will only wait for about 45 seconds. If he ends up waiting for that full amount of time, but still doesn’t get the chance to use the local data store (because some other component of the system is still using it), then this error will be raised.

Workaround:

  • keep the size of the local workspace from growing too large, files and folders less than 50,000 items
  • Avoid working with extremely large sets of pending changes (10,000+) for a long time without checking in. This helps to keep ‘reconcile’ costs low
  • Install Visual Studio 2012 Update 2 or later to get protected from the deadlock scenarios
  • Convert the local workspace to server workspace

Tags:

TFS | TFS 2012 | Visual Studio 2012

How to switch a workspace from source to target workspace mappings without affecting the folders and files in the target workspace.

by Xavier Dilip Kumar 19. December 2013 08:02

Explanation:

A regular get operation will deleted each item in the target workspace folder and re-downloaded the folders and files from the server to target workspace folder.

Solution:

Use remap switch with tf get command

"tf get /remap"

Note: /remap switch does increase the load on server to process your request

Tags:

TFS 2010 | Visual Studio 2010 | Visual Studio 2012 | Visual Studio 2013

Can I lock folders and files in a shelveset?

by Xavier Dilip Kumar 19. December 2013 07:43

Explanation

A lock cannot exist in a shelveset, When you try to lock an item and shelve it, your lock will be removed as part of the shelve operation.

Tags:

Visual Studio 2010 | Visual Studio 2012 | Visual Studio 2013

Multiple TFS users mapping their workspaces to same folder on shared drive

by Xavier Dilip Kumar 18. December 2013 10:02

Explanation:

Multiple users mapping their workspaces to same folder on shared drive lead to conflicts in performing checkin, Checkout and "get latest" operations.

Workaround:

You can try users mapping their workspaces to different folder on shared drive.

For example

user 1 -- <Shared Drive>\User 1 Workspaces\

user 2 -- <Shared Drive>\User 2 Workspaces\

user 3 -- <Shared Drive>\User 3 Workspaces\

user 4 -- <Shared Drive>\User 4 Workspaces\

Note: Mapping the workspace to a shared drive lead to bad performance.

Tags:

Visual Studio 2010 | Visual Studio 2012 | Visual Studio 2013

Cannot add new build templates or create team projects on TFS because of error ‘The File Exists’

by Xavier Dilip Kumar 16. December 2013 08:14

Exception:

Explanation:

The error may occur when the following cache folder size increases.

C:\Users\<tfsservice account / Build account>\AppData\Local\Temp

Solution:

Clearing the content of the following cache folder location resolved issue with build and team project creation. 

C:\Users\<tfsservice account / Build account>\AppData\Local\Temp

Tags:

TFS | TFS 2010 | TFS 2012 | TFS 2013

TFS Versions

by Xavier Dilip Kumar 16. December 2013 07:51
TFS Versions    
2005 RTM 8.0.50727.147
  SP1 8.0.50727.762
     
2008 RTM 9.0.21022.8
  SP1 9.0.30729.1
     
2010 RTM 10.0.30319.1
  SP1 10.0.40219.1
  CU2 10.0.40219.371
     
2012 RTM 11.0.50727.1
  Update 1 11.0.51106.1
  Update 2 11.0.60315.1
  Update 3 11.0.60610.1
  Update 4  
     
2013 RTM 12.0.21005.1

Tags:

TFS | TFS 2010 | TFS 2012 | TFS 2013

How to Restart Team Foundation Server App Tier

by Xavier Dilip Kumar 10. December 2013 10:16

Solution:

Open command prompt as Administrator. Execute the follwoing commands

  1. %windir%\system32\inetsrv\appcmd recycle apppool /apppool.name:"Microsoft Team Foundation Server Application Pool" 
  2. net stop tfsjobagent 
  3. net start tfsjobagent

Tags:

TFS

Exception Message: Could not load file or assembly 'System.Management.Automation, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (type FileNotFoundException)

by Xavier Dilip Kumar 10. December 2013 09:12

Explanation:

Build fails with missing file: System.Management.Automation.dll, The InvokePowerShellCommand activity in Community TFS Build Extensions has a dependency on System.Management.Automation.DLL

Solution:

Install Windows Management Framework 3.0 on the build server.

Tags:

TFS 2010 | TFS 2012 | TFS 2013

About the author

My name is Xavier Dilip Kumar Jayaraj and I am a Software Configuration Management Engineer with a background in application development, Build & packaging using Install Shield.

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Disclaimer

The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.

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