Otto Moerbeek wrote:

I read through the mailing list archives and found a thread explaining that
the disklabel is stored around the beginning of partition 'a' and that one
should allocate a small partition 'a' which should not be made part of the
JBOD.

I think you misread. It's enough to make sure the a partitions starts
after the first track. Just run fdisk -i on a new (ccd) disk. It
takes care of that.

I am talking about the physical disk, not the ccd disk.

In this case, the physical disk is wd1, which has been initialized by fdisk -i. I then created wd1a and wd1b. wd1's disklabel gets put into the beginning of wd1a if I understood correctly. Because when I create ccd0 with wd1a and wd1b as members, ccd0 has the same disklabel as wd1.

What I am uncomfortable with is that

1) this does not appear to be documented in the man pages anywhere

http://www.openbsd.org/faq/faq14.html#disklabel

True, the FAQ is not 'offcial documentation'....

To me it is. But the information isn't there. What comes close is disklabel(5) which states:

"The label is located in sector number LABELSECTOR of the drive, usually sector 0 where it may be found without any information about the disk ge ometry. "

"Usually sector 0" is a little vague.

Still confused,
-pu

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