[nzlug] LVM and toast....

[Nevyn]

Just another quick question....

pvcreate --uuid "<some_long_string>" --restorefile
/etc/lvm/archive/VolumeGroupName_XXXXX.vg <PhysicalVolume>

What should <some_long_string> be set to or does it not matter?

On 4/1/07, Jasper Bryant-Greene <jasper at albumltd.co.nz> wrote:
> The file in /etc/lvm/backup is what you want. It's a textual dump of
> your volume group's configuration.
>
> Cheers,
> Jasper
>
>
> On Sun, 2007-04-01 at 16:58 +1200, Nevyn wrote:
> > Hi,
> >
> > Things are going very badly at the moment - suddenly the output of
> > /proc/mdstat was showing that 2 disks had suddenly dropped off - 1 was
> > showing a failure and I have no idea why the other one wasn't in there
> > except that it was showing (s) next to it.
> >
> > Of course this meant that suddenly the array wasn't working which
> > explains all the wierd behaviour I had suddenly started experiencing.
> > After a few failed attempts to get the array to rebuild itself, I
> > reboot the machine and lo and behold, the raid seems to have gotten
> > itself together.
> >
> > Still wasn't mounting though so I ran vgscan - and got the following message:
> >   Reading all physical volumes.  This may take a while...
> >   Incorrect metadata area header checksum
> >
> > The lvm howto has this to say about it:
> > "If you get the warning "incorrect metadata area header checksum" or
> > something about not being able to find PV with UUID foo, you probably
> > toasted the volume group descriptor area and lvm startup can't occur."
> >
> > and then has a command to restore the stuffed bits:
> > pvcreate --uuid "<some_long_string>" --restorefile
> > /etc/lvm/archive/VolumeGroupName_XXXXX.vg <PhysicalVolume>
> >
> > However, I don't have a .vg file anywhere that I can find. There is a
> > file in the back up directory but I'm a little unsure about this as it
> > doesn't have a .vg extension.
> >
> > Does anyone know how I can fix all this?
> >
> > Regards,
> > Nevyn.
> >
> > _______________________________________________
> > NZLUG mailing list NZLUG at linux.net.nz
> > http://www.linux.net.nz/cgi-bin/mailman/listinfo/nzlug
> --
> Jasper Bryant-Greene <jasper at albumltd.co.nz>
> Album Limited
>
> _______________________________________________
> NZLUG mailing list NZLUG at linux.net.nz
> http://www.linux.net.nz/cgi-bin/mailman/listinfo/nzlug
>
>
>