Re: [linux-lvm] vgcfgrestore fails.

[Hcd <dablake@speakeasy.net>]

Ok,  I have my volumes back.  
It was messy but it worked.

l simply removed the lvm 9.4 and reinstalled lvm 8.0
I then did the vgcfgrestore and opt and export came back.
thanks for your help. 

On Monday 30 April 2001 07:03, you wrote:
> No joy on this on this method.
> If you need I can supply more inforamation.
> BTW I am running on an Athlon..
> thor:/etc # cp /etc/lvmconf/export.conf /etc/lvmtab.d/export
> thor:/etc # cp /etc/lvmconf/opt.conf /etc/lvmtab.d/opt
> thor:/etc # echo -ne "export\0" > /etc/lvmtab
> thor:/etc # echo -ne "opt\0" >> /etc/lvmtab
> thor:/etc # vgchange -ay
> vgchange -- ERROR: different structure size stored in
> "/etc/lvmtab.d/export" than expected in file vg_cfgrestore.c [line 122]
> vgchange -- volume group "export" does not exist
> vgchange -- ERROR: different structure size stored in "/etc/lvmtab.d/opt"
> than expected in file vg_cfgrestore.c [line 122]
> vgchange -- volume group "opt" does not exist
>
> On Monday 30 April 2001 11:04, you wrote:
> > On Sat, Apr 28, 2001 at 12:33:58PM -0500, root wrote:
> > > I am running SuSe 7.1
> > > 2.4.0 kernel
> > > 512M Ram
> > > AhA2940U2W
> > > suse lvm
> > >
> > > I had three volume groups and a week ago the volume group that
> > > contained user had a drive crash.  I was unable to save usr but now I
> > > can not mount any of my other volume groups and vgcfgrestore fails.  Is
> > > their any thing I can do to get my data?
> > > thor:~ # pvdisplay /dev/sdd2
> > > --- Physical volume ---
> > > PV Name               /dev/sdd2
> > > VG Name               export
> > > PV Size               8.3 GB / NOT usable 3.31 MB [LVM: 238 KB]
> > > PV#                   2
> > > PV Status             available
> > > Allocatable           yes (but full)
> > > Cur LV                1
> > > PE Size (KByte)       4096
> > > Total PE              2123
> > > Free PE               0
> > > Allocated PE          2123
> > > PV UUID               ruLId0-1JoY-34Ja-oLW0-FmzV-Q5ZN-NQaZw9
> > > thor:~ # pvdisplay /dev/sdc2
> > > --- Physical volume ---
> > > PV Name               /dev/sdc2
> > > VG Name               export
> > > PV Size               8.3 GB / NOT usable 3.31 MB [LVM: 238 KB]
> > > PV#                   1
> > > PV Status             available
> > > Allocatable           yes (but full)
> > > Cur LV                1
> > > PE Size (KByte)       4096
> > > Total PE              2123
> > > Free PE               0
> > > Allocated PE          2123
> > > PV UUID               ynnKCX-mjlT-jeNe-9MHY-tnP2-XCIC-nbKrmq
> > >
> > > thor:~ # vgcfgrestore -n export /dev/sdd2
> > > vgcfgrestore -- ERROR: different structure size stored in
> > > "/etc/lvmconf/export.conf" than expected in file vg_cfgrestore.c [line
> > > 122]
> > > vgcfgrestore -- ERROR "vg_cfgrestore(): read" restoring volume group
> > > "export"
> >
> > You are using a newer LVM versions which has different metadata
> > definitions that the one which created those backups.
> >
> > My guess is, that you are using LVM > 0.9.1 Beta 3 *now* but created the
> > backups with a lower LVM 0.9 version and you suffer from a PV uuid
> > related bug preventing vgscan to find your VG.
> >
> >
> > One way to address the situation (pressuming no VGs are active) is:
> >
> > - create /etc/lvmtab.d/ in case it doesn't exist
> >
> > - copy /etc/lvmconf/export.conf to /etc/lvmtab.d/export
> >
> > - echo -ne 'export\0' > /etc/lvmtab
> >
> > - vgchange -ay
> >
> > If the VG named "export" comes back to life this way (assuming that the
> > user LV belongs to it) do:
> >
> > - lvreduce -l1 /dev/export/user
> > - lvrextend -l1 /dev/export/user
> >
> > replace "user" with a valid LV name in case I assumed wrong.
> >
> > The purpose of that NULL operation in the end is, that your PV uuid list
> > gets recreated by LVM >= 0.9.1 Beta 4 which should make vgscan happy
> > again ;-)
> >
> > The last 2 commands just shrink user by 1 LE and grow it again which
> > is necessary, because your export VG is *full*. This will not harm the
> > user LV in the end, because the allocator has the only option to use the
> > very same PE for growing which was freed before by the shrinking of user.
> >
> > If your VG had at least 1 free PE a lvcreate/lvremove cycle for a dummy
> > LV with just 1 LE had done it as well.
> >
> > Please tell us if this helps you or we need to go for another solution.
> >
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm@sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
>
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