problem with sunlabel/gpart

[Ruben de Groot]

Hi Marius,

On Fri, Jun 12, 2009 at 04:51:44PM +0200, Marius Strobl typed:
> On Fri, Jun 12, 2009 at 01:02:50PM +0200, Ruben de Groot wrote:
> > 
> > I wonder if somebody can explain this:
> > In a netra X1 I have 2 identical 150GB disks. One was partitioned by
> > sysinstall like this:
> > 
> > # sunlabel ad0
> > # /dev/ad0:
> > text: FreeBSD149G cyl 47955 alt 2 hd 16 sec 63
> > bytes/sector: 512
> > sectors/cylinder: 1008
> > sectors/unit: 48338640
> > 
> > 8 partitions:
> > #
> > # Size is in sectors.
> > # Offset is in cylinders.
> > #    size       offset
> > #    ---------- ----------
> >   a:    1049328          0
> >   b:    2097648       1041
> >   c:   48338640          0
> >   d:    4195296       3122
> >   e:    1049328       7284
> >   f:   33555312       8325
> >   g:  104858208      41614
> >   h:  165774672     145640
> > 
> > Notice that the c partition is smaller than the entire disk. Trying
> > to copy this partition scheme to ad1 using sunlabel fails with:
> > 
> > sunlabel: partition g extends past end of disk
> > 
> > gpart shows:
> > 
> > morninglightmountain# gpart show ad0
> > =>       0  48338640  ad0  VTOC8  (149G)
> >          0   1049328    1  !0  (512M)
> >    1049328   2097648    2  !0  (1.0G)
> >    3146976   4195296    4  !0  (2.0G)
> >    7342272   1049328    5  !0  (512M)
> >    8391600  33555312    6  !0  (16G)
> >   41946912  104858208    7  !0  (50G)
> >   146805120  165774672    8  !0  (79G)
> > 
> > morninglightmountain# gpart show ad1
> > =>       0  48338640  ad1  VTOC8  (149G)
> >          0  48338640       - free -  (23G)
> > 
> > Off course, I could just use sysinstall again to partition the second
> > disk, but I'm curious as to why this is happening.
> > 
> 
> Hrm, are/were there existing labels on both ad0 and ad1
> from a previous OS installation which limit their sizes
> to 24GB? What version of FreeBSD is this?

> uname -a
FreeBSD morninglightmountain.hacktor.net 8.0-CURRENT FreeBSD 8.0-CURRENT #2: Mon Apr 27 22:37:12 UTC 2009     root at morninglightmountain.hacktor.net:/usr/obj/usr/src/sys/MORNINGLIGHTMOUNTAIN  sparc64

I did a "dd if=/dev/zero of=/dev/ad1 bs=1m count=1", but that doesn't change anything.

writing a new label does not help either :

morninglightmountain# sunlabel -w ad1 auto
morninglightmountain# gpart show ad1
=>       0  48338640  ad1  VTOC8  (149G)
         0  48338640       - free -  (23G)

Ruben