ASM disk header question - f1b1

From: Martin Bach <>
Date: Wed, 28 Oct 2009 13:21:04 +0000
Message-ID: <>

Hi listers,

I have played around with the ASM disk header and kfed in an effort to rename a disk group in (Linux). I achieved to do this roughly in the same way as the new 11.2 renamedg tool works.

One question remains: does anyone know the meaning/importance of the f1b1 item? I.e. what significance does the following line have in a disk header?

kfdhdb.f1b1locn:                      2 ; 0x0d4: 0x00000002

I've seen at least 1 disk in a disk group had this set to 2, whereas all the others had it set to 0.

Any ideas? It doesn't seem to be (publicly) documented anywhere, it might be in (internal) Note.417687.1 ***INTERNAL NOTE*** Creating a New ASM Disk Header After Existing One Is Corrupted

Any help appreciated!



Martin Bach
OCM 10g
-- Received on Wed Oct 28 2009 - 08:21:04 CDT

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