Re: gjournal is not automounted any more

On Jan 2, 2009, at 10:14 PM, M. Warner Losh wrote:

> In message: <20090103033543.GB77475_at_dragon.NUXI.org>
>            "David O'Brien" <obrien_at_freebsd.org> writes:
> : On Fri, Jan 02, 2009 at 11:47:57AM -0700, M. Warner Losh wrote:
> : > In message: <20090102091334.GA41230_at_dragon.NUXI.org>
> : >             "David O'Brien" <obrien_at_freebsd.org> writes:
> : > : Before 'fsck' would read the lable for the FS type.  That has  
> changed and
> : > : thus you cannot just 'fsck /dev/ad1s1d' anymore.  So the FS  
> type in fstab
> : > : must be accurate.
> : >
> : > Why did that change?  I routinely have disks that aren't in my
> : > /etc/fstab that I mount and this is a pain in the backside.
> :
> : Due to r186240 which:
> :     Make gpart the default partitioning class on all platforms.
> :
> : Seems GEOM_PART_BSD does not like labels that GEOM_BSD did.
>
> Then why the change?  Shouldn't we make it like them for  
> compatibility?

David's statement is incorrect. They like the same labels
for all practical purposes. The problem at hand here is
that fsck(8) & newfs(8) ask of GEOM_BSD what the partition
type is. This means 2 things:
1.  Any platform that doesn't use the BSD disklabel by
     default needs to have a proper /etc/fstab and is not
     behaving the same as i386.
2.  Switching to GPT as the default partitioning scheme
     yields the same problem.

As I said in an email to arch_at_, it's good to query the
partition type to determine what to do when more specific
information is missing (running fsck(8) vs fsck_ffs(8)).
But it wasn't something that was there at the switchover
point.

FYI,

-- 
Marcel Moolenaar
xcllnt_at_mac.com