[linux-lvm] Newbie question: ERROR "pv_move_pe(): PE lock" pv_move_pe

[Heinz J. Mauelshagen]

On Sat, Feb 17, 2001 at 03:48:56PM +0000, Joe Thornber wrote:
> On Sat, Feb 17, 2001 at 10:49:19AM +0000, Piete Brooks wrote:
> > >> # pvmove /dev/hda9 
> > >> pvmove -- moving physical extents in inactive volume group "vg01"
> > >> pvmove -- WARNING: moving of active logical volumes may cause data loss!
> > >> pvmove -- do you want to continue? [y/n] y
> > >> pvmove -- ERROR "pv_move_pe(): PE lock" pv_move_pe
> > >> 
> > >> pvmove -- ERROR "pv_move_pe(): PE lock" moving physical extents 
> > > i believe the vg should be active....
> > 
> > Sigh -- it warns that data loss can occur if they are active, so I assumed 
> > that they should be inactive.  If it has to be active, why does it quietly say 
> > `extents in inactive volume' and not warn that they should be active ?
> 
> I think the warning is just telling you that if you loose power whilst
> the move is in progress bad things could happen.  Heinz can you
> clarify please.

Yes, that warning exactly means that.
There's an aproach to work around that already but it's not yet implemented :-(

OTOH the ERROR displayed shouldn't happen.
Is probably related to the MD assumption further down in this thread.

As Andreas Dilger pointed out: we need to fix pv_read() and friends in order
to stop dealing with MDs through error codes.


> 
> - Joe
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-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen at Sistina.com                           +49 2626 141200
                                                       FAX 924446
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