[linux-lvm] DOH! NT's fixboot killed PV
Heinz J . Mauelshagen
mauelshagen at sistina.com
Fri Nov 9 03:28:02 UTC 2001
John,
hoping that the FAT metadata is small enough not to overwrite any LVM
extents, you should try a "pvcreate -f /dev/hda1" and rerun the
"vgcfgrestore;vgscan;vgchange -ay" cycle.
pvcreate is necessary, because vgcfgrestore needs a valid LVM PV structure.
Regards,
Heinz -- The LVM Guy --
On Thu, Nov 08, 2001 at 04:22:42AM -0500, John Marquart wrote:
> Hello,
> Through my own carelessness - my helper ended up running w2k's
> fixboot program on my rootvg's primary PV. It wrote FAT info of some sort
> to the header area of my /dev/hda1 partition.
>
> I am (desperately) hoping that there is some way to recover this header
> info. (And that ppl on this list can aide me.)
>
> I thought perhaps the way to go about it was to do a vgcfgrestore ..
> however I had no luck - when i ran it w/ the -l / -l -l flags - it would
> show me the correct info - but if i ran it w/out the -l flags - then it
> would give me the following error:
>
> ERROR "pv_read(): PV identifier invalid" reading physical volumes
>
> I get the same error if I try to do pvscan.
>
> pvdata shows that things are FUBAR - w/ a UUID of something like "0
> NAME- -FAT1-2 - <GARBAGE>" - but I know the proper identifier is in
> the cfg backup file - since it can be displayed and is
> "Nku12O-iI1H-Ee4v-Lpa0-SxtF-31z)-xZs7sr"
>
>
> If anyone could provide tips / directions on how to go about fixing this
> problem - I would be very greatful - I just finally got the system
> built/installed to my satisfaction and would hate to start over.
>
> tia,
> -john marquart
>
>
>
> ps. Bill & Ted rule!
>
>
>
> _______________________________________________
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> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
*** 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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