Getting Data In

Lock files on Windows server

Engager

Does Splunk lock the log file while we’re reading it? This would be on my Windows server IIS and Exchange.

Tags (2)
1 Solution

Splunk Employee
Splunk Employee

Tailing uses CreateFile with these flags:

FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE

http://msdn.microsoft.com/en-us/library/aa363858%28VS.85%29.aspx

There is no problem for another process to be writing to the file while Splunk is reading the same file.

View solution in original post

Splunk Employee
Splunk Employee

Tailing uses CreateFile with these flags:

FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE

http://msdn.microsoft.com/en-us/library/aa363858%28VS.85%29.aspx

There is no problem for another process to be writing to the file while Splunk is reading the same file.

View solution in original post

Splunk Employee
Splunk Employee

Note that if another program opens the file without the FILESHAREREAD flag, then either splunk will not be able to open the file, or the other program will not be able to open it if Splunk already has it open.

0 Karma

Splunk Employee
Splunk Employee

No it does not.