FreeBSD 5.2.1-RC2 fs snapshot problems.

[Don Lewis]

On 16 Feb, Joseph Scott wrote:
> 
> 	I just finished testing a fresh install of FreeBSD 5.2.1-RC2 and
> have verified that the problem mentioned in PR kern/58154 is still there.
> The problem is fairly simple to show:
> 
> 1.  Install a fresh 5.2.1-RC2 system.
> 2.  Shutdown a few times to show that it completes correctly.
> 3.  Create some snapshots of a filesystem (on 5.2.1-RC2 I did
>     3 snapshots of /usr).
> 4.  Try to shutdown again.
> 5.  Watch your system hang forever, unable to complete a shutdown
>     correctly.
> 
> 	I've done this samething on 3 different systems with the exact
> same results every single time.  If you cycle the power to reboot and then
> delete the snapshot files shutdown is able to work completely once more.
> 
> 	I'm more than willing to try out patches or different
> settings/options in an effort to try and track this down.  I would be
> thrilled to be able to use fs snapshots for systems at work, but as it
> stands not being able to shutdown a system makes the snapshot feature
> useless.
> 
> 	Sorry about cross posting this so much, but I've been trying to
> raise the attention level of this problem for weeks now without any luck.

I saw this as well a couple of months ago.  I think I was running
5.2-CURRENT.