Re: ataraid(4) and VOP_OPENing the same block device

[Thor Lancelot Simon <tls%rek.tjls.com@localhost>]

On Fri, Sep 12, 2008 at 02:51:27PM -0700, Bill Stouder-Studenmund wrote:
> On Fri, Sep 12, 2008 at 05:09:52AM +0200, Quentin Garnier wrote:
> > 
> > IIUC, the controller allows you to slice disks:  e.g., take two halves
> > out of each, build a RAID1 with one set, and a RAID0 with the other.  In
> > this case both disks belong to each array.
> 
> Then the right thing to do is somehow export those slices. It makes sense 
> that different slices can be in different RAIDS, but any given slice 
> should be in only one.

Yes.  What concerns me is that I'd thought Elad had added code to the
security policy which would in fact make it impossible to use one slice
twice like this -- I'm not sure why what Juan is doing now works.

-- 
Thor Lancelot Simon                                        
tls%rek.tjls.com@localhost
 "My guess is that the minimal training typically provided would only
 have given the party in question multiple new and elaborate ways to do
 something incomprehensibly stupid and dangerous."      -Rich Goldstone