Manuel Bouyer wrote:

> I see this on my alpha which doesn't have MFS, nor softdep. The busy vnode
> is on the root file system.

Can you try "options DEBUG_HALT_BUSY" and rebuild a kernel (only
vfs_subr.o will need to be rebuilt) - I heard of cases where the locked
vnode is the device file (/dev/?d0a) of the root filesystem, although
all of my problems are MFS related.  Oh, and I don't have softdep
enabled either...

Simon.