[linux-lvm] missing vg after reboot
Heinz J . Mauelshagen
mauelshagen at sistina.com
Tue Sep 11 14:18:32 UTC 2001
vgcfgrestore only works on a new PV.
Run "pvcreate -ff /dev/YourDevice" *before trying vgcfgrestore on it.
Regards,
Heinz -- The LVM Guy --
On Mon, Sep 10, 2001 at 08:49:03AM -0700, Michael Holschbach wrote:
>
> --- "Heinz J . Mauelshagen" <mauelshagen at sistina.com> wrote:
> >
> > Michael,
> >
> > the pvdata output below exposes a completely messy PV structure,
> > which makes me think of 2 possible reasons:
> >
> > a. /dev/hda2 is not the device you used to create a physical volume
> >
> > b. something accidentially overwrote /dev/hda2 after the PV creation
> >
> >
> > If b is true you might still have an actual VGDA backup in
> > /etc/lvmconf/ which
> > you can use to vgcfgrestore(8) it to /dev/hda2 presumed that
> > /dev/hda2 is
> > the right device.
> >
> I already tried vgcfgrestore. All available backup files lead to the
> same result:
>
> > > server1:~ # vgcfgrestore -v -n data /dev/hda2
> > > vgcfgrestore -- locking logical volume manager
> > > vgcfgrestore -- restoring volume group "data" from
> > > "/etc/lvmconf/data.conf"
> > > vgcfgrestore -- checking existence of
> > > "/etc/lvmconf/data.conf"
> > > vgcfgrestore -- reading volume group data for "data"
> > > from "/etc/lvmconf/data.con
> > > f"
> > > vgcfgrestore -- reading physical volume data for
> > > "data" from "/etc/lvmconf/data.
> > > conf"
> > > vgcfgrestore -- reading logical volume data for "data"
> > > from "/etc/lvmconf/data.c
> > > onf"
> > > vgcfgrestore -- checking volume group consistency of
> > > "data"
> > > vgcfgrestore -- checking volume group consistency of
> > > "data"
> > > vgcfgrestore -- reading physical volume "/dev/hda2"
> > > vgcfgrestore -- ERROR "pv_read(): PV identifier
> > > invalid" reading physical volume
> > > "/dev/hda2"
> > >
> My idea was to reset the values of /dev/hda2 according to the following
> settings:
>
> > > server1:~ # vgcfgrestore -v -ll -n data /dev/hda2
> ...
> > > --- Physical volume ---
> > > PV Name /dev/hda2
> > > VG Name data
> > > PV Size 27.62 GB / NOT usable 2.48 MB
> > > [LVM: 148 KB]
> > > PV# 2
> > > PV Status available
> > > Allocatable yes
> > > Cur LV 6
> > > PE Size (KByte) 4096
> > > Total PE 7069
> > > Free PE 669
> > > Allocated PE 6400
> > > PV UUID
> > > e7sX5R-XnTm-keX6-jShf-tTlw-DUP3-mzp4zW
> > >
>
> These values seem plausible for me. Can i use them to manually edit the
> PV /dev/hda2 to rescue some data?
>
>
> MfG Michael
>
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*** 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
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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