Change of share permissions caused ASP.NET recompile

Question

We have our sites under a main folder we'll call call "d:\sites". "d:\sites" is shared as \server1\sites with read only access for our Dev and QA groups. I added another read only group to the share permissions (not NTFS) and the site started to recompile. I wasn't sure what I had just seen, so I did it on another server and the same behavior occurred.

We use dynamic recompilation, and I can't find a reference that says this should cause a recompile to occur (ref.[1]: http://msdn.microsoft.com/en-us/library/ms366723%28v=VS.100%29.aspx)

Has anyone else seen this, or know why it is happening?

Answer 1

If permissions are inherited from the parent, then adding this new permission changes the file. This change in the state of the file is picked up by IIS as a change, so the dynamic recompile is triggered. IIS treats even permission changes as if it was a change to the code base.