Re: mount -u use fstab options and wapbl log questions

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Thu, Aug 10, 2023 at 14:05:57 +0000, Jeremy C. Reed wrote:

> I saw in mount(8):
> 
> "The set of options is determined by first extracting the options for 
> the file system from the fstab(5) file ..."
> 
> But when I did
> 
> mount -u /
> 
> Then mount didn't show the "log".
> 
> t1:reed$ grep ffs /etc/fstab
> NAME=8ab393d0-4743-11e8-9359-b8ac6fdf499d               /       ffs     rw,log           1 1
> 
> So then I did
> 
> mount -u -o log /
> 
> mount then showed:
> 
> /dev/dk0 on / type ffs (log, local)
> 
> Does the mount -u used the fstab options?
> 
> (Sorry I didn't read the code or look at newer versions.)

I'm a bit surprised the man page says that.  I can see:

sbin/mount/mount.c:243
    /* ignore the fstab file options.  */
    fs->fs_mntops = NULL;

that has been there for decades.  I guess I sort of always
unconsciously assumed that, b/c that seems like the right thing for -u
to do.


-uwe