> On Sun, Jul 25, 2010 at 09:48:23PM -0400, Kenneth R Westerback wrote: > > If you wanted to mount according to the partition type number, DON'T > > USE '-t <blah>'. We give you the option to OVERRIDE the partition > > type number and you made use of that override. You have taken command > > I believe that this thread is the result of documentation error on the > mount(8) man page. A patch for the man page is at the end of this > message. > > The problem is that the man page says: > > The argument following the -t is used to indicate the file system type. > The type ffs is the default. > > This is incorrect. According to lines 248 through 251 of the source > file at > > http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/mount/mount.c?annotate=1.50 > > the actual default behavior is to check the disklabel's filesystem type: > > If -t flag has not been specified, and spec contains either > a ':' or a '@' then assume that an NFS filesystem is being > specified ala Sun. If not, check the disklabel for a > known filesystem type. > > The original poster in this thread is wondering why mount(8) did not > check the disklabel's filesystem type when he specified the -t option. > The answer is that mount(8) checks the disklabel's filesystem type by > default, but that -t overrides that default behavior. > > > --- sbin/mount/mount.8.orig Mon Jul 26 11:59:30 2010 > +++ sbin/mount/mount.8 Mon Jul 26 12:48:45 2010 > @@ -269,12 +269,15 @@ > The argument following the > .Fl t > is used to indicate the file system type. > -The type > -.Ar ffs > -is the default. > +If this option is omitted, then > +.Nm > +attempts to guess a file system type using the > +.Xr disklabel 5 > +and other information. > The > .Fl t > option can be used > +to override this behavior and > to indicate that the actions should only be taken on > file systems of the specified type. > More than one type may be specified in a comma separated list.
This diff isn't quite right. There are no disklabels on NFS partitions; heck, there's no true disklabel on a MSDOS-only memory stick. The language you've written is too specific.
