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Re: [linux-lvm] ERROR pv_move_pe()

On Wed, May 30, 2001 at 02:33:40PM +0200, Timo Veith wrote:
> Hi all!
> We have a Red Hat Linux system with kernel 2.4.3 using LVM 0.9.1 beta7.
> There is one VG defined with 6 PVs. We added another hard disk to the
> VG, trying to replace a smaller PV by using pvmove. The pvmove command
> failed after a long run with the following error message:
> root host[~] pvmove /dev/hdd1
> pvmove -- moving physical extents in active volume group "vg00"
> pvmove -- WARNING: if you lose power during the move you may need to
> restore your LVM metadata from backup!
> pvmove -- do you want to continue? [y/n] y
> pvmove -- ERROR reading input physical volume "/dev/hdd1" (still 65536 bytes to read)
> pvmove -- ERROR "pv_move_pe(): read input PV" pv_move_pe
> pvmove -- ERROR "pv_move_pe(): read input PV" moving physical extents
> TH output of pvdisplay /dev/hdd1 shows that there is only one PE left
> to move away from /dev/hdd1. We've tried to change the state of the
> VG from active to inactive and from the LV also. Even with the
> filesystem (reiserfs) mounted or unmounted the same error message
> appears.

Do I get right that you deactivated the VG, activated it again and
were not able to pvmove that last PE away from /dev/hdd1.

If so, it sounds like a bug in pv_move_pes() in the library or something.

Could you please send "pvmove -d" output to me in direct mail to sort
this one out.

> Where is this error message coming from, how can we solve this
> problem?
> What happens if we just reduce the VG by /dev/hdd1 although there is
> still one PE of the VG on it?

You can't do that. A PV must have *no* PEs allocated to LVs.

> Thanks in advance for any help.
> Regards,
>      Timo
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Heinz    -- The LVM Guy --

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


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

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