Re: [linux-lvm] VG has wrong num of PV's; won't vgscan

["Heinz J . Mauelshagen" <mauelshagen@sistina.com>]

On Wed, Feb 13, 2002 at 11:04:32AM -0500, Sean C. McCord wrote:
> Thanks greatly!  That worked beautifully.
> 

You're welcome.

> Let this me a lesson to me (again).... backup, backup, backup.
> 

Should go for a backup here now ;-)

Regards,
Heinz    -- The LVM Guy --


> 
> On Sun, 10 Feb 2002, Heinz J . Mauelshagen wrote:
> 
> >
> > Sean,
> >
> > I have attached a quick hack perl script to fix your VGDA on
> > /dev/ide/host0/bus1/target0/lun0/part1.
> >
> > Please recognize that it *just* solves the very purpose of getting your
> > VG with the single PV on /dev/ide/host0/bus1/target0/lun0/part1 back!
> >
> > Save your metadata before you run it by
> >
> > dd if=/dev/ide/host0/bus1/target0/lun0/part1 bs=1k count=1024 of=vgda.sav
> >
> > in order to be able to redi from start in case something goes badly wrong.
> >
> > Regards,
> > Heinz    -- The LVM Guy --
> >
> >
> > On Sat, Feb 09, 2002 at 04:28:14PM -0500, Sean C. McCord wrote:
> > > I was attempting to add another PV to my VG 'mccord', and vgextend
> > > segfaulted in the middle.  After I rebooted (the kernel dumped its LVM
> > > core), there was no volume group found by vgscan.
> > >
> > > I have seen similar posts in the archives, but most of them reference a
> > > bug that was supposedly fixed before LVM 1.0, so this must not be it.
> > >
> > > Anyway, pvdisplay on /dev/ide/host0/bus1/target0/lun0/part1 says
> > > everythings's great, and that it is PV #1 of VG mccord.
> > >
> > > pvdata says VG mccord has two PVs and that both are active.  The other PV,
> > > though, is completely trashed.  pvdata also says that the LV seems to be
> > > fine.
> > >
> > > I have no backup of the vgdata that I can find (they are stored on the
> > > first PV...), so I can't do what many of the other people did to get their
> > > VGs back.
> > >
> > > Is there any way to change the VG info back to having only one PV, and if
> > > so, will that get vgscan to find the VG again?  If you need the debug
> > > info, I can provide it.
> > >
> > > My system is using LVM 1.0.1-rc4, devfs, Reiserfs, and I have my root file
> > > system on that VG.
> > >
> > > Thanks for any assistance anyone can offer,
> > >
> > > Sean C. McCord
> > >
> > >
> > >
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm@sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > 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 ***

*** 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@Sistina.com                           +49 2626 141200
                                                       FAX 924446
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