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Re: [linux-lvm] pvmove killed vg



On Wed, Dec 12, 2001 at 01:28:16PM +0100, gunther kuhlmann web de wrote:
> linux-lvm sistina com schrieb am 12.12.01:
> 
> Heinz,
> 
> thank you for your answer! I've done the pvcreate -ff on all
> pv. One came up with ...volume group "<somegarbage>" where it
> should have said volume group "vg0". So that fixed something,
> I presume.
> 
> But how do I run the vgcfgrestore on _all_ PV? When I specify
> one PV, it complains it can't restore part of active volume 
> group.

Looks like the kernel still knows about the VG.
Check /proc/lvm/global if the VG is really still active.

In that case you need to reboot to get rid of it.

Regards,
Heinz    -- The LVM Guy --


> When I specify all PV's, it complains please enter
> physical volume name. How do I do this? Does this work with
> lvm 1.0.1? 
> 
> Commands like vgdisplay complain the VG does not exist.
> 
> As to your second suggestion: I have vg0.conf and vg0.<digit>.old
> in /etc/lvmconf. I assume you mean the first?
> 
> Thanks for your input!
> 
> Regards,
> 
> Gunther
> 
> > you need to run vgcfgrestore on *all* PVs which where in your 
> vg0 *after*
> > running "pvcreate -ff" on them. YOu can find out which these 
> where by
> > "vgcfgrestore -ll -n vg0 -f 
> /etc/lvmconf/WhateverYourRecentBackupFileIs".
> > 
> > If that doesn't work a hack to activate it anyway without 
> running vgscan is
> > to copy /etc/lvmconf/WhateverYourRecentBackupFileIs (I assume
> > /etc/lvmconf/vg0.conf.cd in your case) to /etc/lvmtab.d/vg0,
> > "echo -en 'vg0\0vg1\0' > /etc/lvmtab" and "vgchange -ay".
> > Create a dummy LV with 1 PE afterwards and your 
> > metadata on all PVs of the VG should be ok again.
> > 
> > Remember to back /etc/lvmconf/ regularly when you change your 
> LVM configuration!
> > 
> > Regards,
> > Heinz    -- The LVM Guy --
> > 
> > 
> > We recommend to upgrade to LVM 1.0.1 because a couple of bugs 
> (some related to
> > pvmove) have been fixed.
> > On Tue, Dec 11, 2001 at 10:34:24PM +0100, 
> gunther kuhlmann web de wrote:
> > > Hi,
> > > 
> > > I've got a broken lvm vg as a result of an unsuccessful pvmove
> > > command. My system is a SuSE 7.0 with kernel 2.4.4 and
> > > lvm-0.9.1_beta7-10. 
> > > 
> > > The vg spans several partitions on one disks, one of which I 
> > > wanted to evacuate. I used the pvmove command with chunks of 
> > > 32 PE (= 1 GB); 10 GB total. The first 8 chunks worked okay,
> > > but the 9th (pvmove -v /dev/hda8:256-287 /dev/hda10) fell over
> > > with error code 23 while moving the fifth PE. So I checked 
> using
> > > pvdisplay that the four PE had indeed been moved. A further
> > > attempt with pvmove -v /dev/hda8:260-287 /dev/hda10 fell over 
> as
> > > well, again error code 23. (That's error moving physical
> > > extent(s)). 
> > > 
> > > I then rebooted the machine which killed the complete volume
> > > group. Which in turn did not quite impress me. :-((
> > > 
> > > During my attempts at recovering I think I did a vgscan, which
> > > found the vg "vg1" on /dev/hdb, but not the vg "vg0" on 
> /dev/hda.
> > > 
> > > I tried the following commands unsuccessfully:
> > > - vgcfgrestore -v -n vg0: please enter physical volume name 
> (the
> > >   synopsys of vgcfgrestore did not state it as a mandatory 
> > > parameter)
> > > - vgcfgrestore -v -n vg0 /dev/hda10: can't restore part of 
> active
> > > volume grout vg0
> > > - vgcfgrestore -v -n vg0 /dev/hda{6,7,8,10}: please enter 
> physical
> > > volume name
> > > - vgchange -a n vg0: volume group vg0 does not exist
> > > - vgchange -a y vg0: volume group vg0 does not exist
> > > 
> > > I still have the file /etc/lvmconf/vg0.conf.cd as well as the
> > > devices /dev/vg0/lv0{0,1,2,3} and /dev/vg0/group. (And
> > > /dev/vg1/..., but that is working.)
> > > 
> > > Any suggestions on how I can recover the data would be highly
> > > appreciated. I found a reference to a program called
> > > uuid_fixer/uuid_editor, but usage was discouraged. Do I have 
> to 
> > > try it
> > > or is there a better way? Does upgrading to a newer version of 
> lvm
> > > help? Or do I have to update the kernel as well then? And I 
> > > definately
> > > do _not_ want to kill my other vg as well.
> > > 
> > > Regards,
> > > 
> > > Gunther
> > > 
> > > 
> > > 
> > > 
> > > 
> ______________________________________________________________________________
> > > Die schönsten Ski-Regionen der Alpen - jetzt bei Ferienklick.de
> > > http://ferienklick.de/ski/?PP=2-5-100-105-38
> > > 
> > > 
> > > _______________________________________________
> > > 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 ***
> > 
> > _______________________________________________
> > 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 
> 
> 
> ________________________________________________________________
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> 
> 
> 
> _______________________________________________
> 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 ***

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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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