[Bug 206328] Crash on shutdown with swap on NFS file (with patch)

[Ronald Klop]

On Mon, 18 Jan 2016 10:48:10 +0100, <bugzilla-noreply at freebsd.org> wrote:

> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206328
>
> --- Comment #3 from Tom Vijlbrief <tvijlbrief at gmail.com> ---
> bufshutdown() ends with:
>
>
>                 if (panicstr == NULL)
>                         vfs_unmountall();
>         }
>         swapoff_all();
>
> Why not just reverse the order?
>
> So swapoff_all() before the vfs_unmountall(), so that the NFS filesystem  
> is
> still available.
>
> Perhaps even at the start of bufshutdown().
>
> Still wondering what the reason of a swapoff_all() call just before the  
> actual
> reboot is.
>

Maybe... leaving swap on a mirrored disk will give a rebuild of the mirror  
on boot if swap is not swapped off.