On Wednesday 17 January 2007 22:30, Chris Mika wrote:
> I sat down and calculated one cylinder, and it's not 63 sectors, it's
> 1008. So I redid the disklabel and it seems to be working. I ran newfs and
> it's reporting 600GB.
>
> You can't create a partition on ccd0, you must use ccd0c.
i don't know what makes you thing so. but it's wrong.
from the FAQ - 14.18.1 - CCD:
 " Just use disklabel on it like you normally would to make the partition or 
partitions you want to use. Again, don't use the 'c' partition as an actual 
partition that you put stuff on."


>
> On Wed, 17 Jan 2007, Chris Mika wrote:
> > I've read that. That's why I began the offset using disklabel's default
> > setting, which is 63. Sorry, that's why I said you can ask for
> > clarification.
> >
> > As for the second part, it wasn't so clear, but with FreeBSD's ccd you
> > create the file system on /dev/ccd0c so I assumed it was the same. If you
> > use disklabel -E ccd0 it can't get the approrpriate geometry.
> >
> > On Wed, 17 Jan 2007, christian widmer wrote:
> >> first:
> >> YOU WROTE: "-> creating one partition of type ccd spanning entire disk"
> >>
> >> i take you're word.... then you should have a close look at 'man ccd'
> >>
> >> "Note that the `raw' partitions of the disks should not be combined.
> >> Each component partition should be offset at least one cylinder from the
> >> beginning
> >> of the component disk."
> >>
> >> this is not what you said you did.
> >>
> >> second:
> >> i would use disklabel to create explicitly a partition on ccd0 (not
> >> using 'c'). but i'm not sure if this is really necessary.
> >>
> >> On Wednesday 17 January 2007 19:11, Chris Mika wrote:
> >>> I'm trying to get CCD working correctly, but it just doesn't want to.
> >>>
> >>> I have two identical 300GB disks that I'm trying to interleave.
> >>>
> >>> Here's exactly what I'm doing:
> >>> # fdisk -i wd1
> >>> # fdisk -i wd3
> >>> # disklabel -E wd1
> >>>    -> creating one partition of type ccd spaning entire disk
> >>> # disklabel -E wd3
> >>>    -> creating one partition of type ccd spaning entire disk
> >>> # ccdconfig ccd0 32 0 /dev/wd1a /dev/wd3a
> >>> # newfs /dev/ccd0c
> >>>
> >>> When I run newfs it only creates a 300GB filesystem, whereas it SHOULD
> >>> create a 600GB file system.
> >>>
> >>> Any ideas? I can send the dmesg or any output if that helps (I didn't
> >>> to save space).
> >>>
> >>> -Chris Mika

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