So, yesterday I was playing around with the VFS code and trying to figure out how to get a 'stub' of a filesystem that I could mount and unmount. To do so I need to implement vfs_root() which requires returning a vnode for the root of the filesystem. So, I just called getnewvnode(), passing it some 'stubby' vfsops that would just printf() whenever they were called. That way I thought I could figure out what was getting done to the vnode. I didn't do any other initialization to the vnode.
So, I mounted the filesystem this way, and tried to unmount it and I got a couple of vnops further into getting the filesystem to unmount. However, a few minutes later my laptop locked up, and upon rebooting I got softupdate inconsistencies and filesystem corruption. How did I manage to hose my system this badly just playing around with one vnode? And what should I do in order to pass back this kind of "fake" root vnode that isn't backed up by any actual filestore? To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
