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Re: [linux-lvm] Severe problem: data lost while adding a partition



Sander,

if you want to redo from scratch, "pvcreate -ff" the disks/partitions
you want to use with LVM. Partitions need to have type 0x8E (Linux LVM).


Regards,
Heinz    -- The LVM Guy --


On Thu, Feb 06, 2003 at 10:48:27PM +0100, Sander Alberink wrote:
> Heinz,
> 
> Thanks for your reply, but I have some more questions....
> 
> >can you tell what you mean with
> >'...something went horribly wron during install...' ?
> >
> >Any particular messages which can help analyzing this ?
> >  
> >
> Well, actually no real error messages, just a GUI installer that didn't 
> do what I expected it to do. However, the LVM was hosed already at the 
> time I realized something was wrong
> 
> >If you don't have any, take your most recent LVM metedata from the archive 
> >(/etc/lvconf/ ; you've got a backup, right ?), figure out disks used as PVs
> >with "vgcfgrestore -ll ..." and run "pvcreate -ff ..." and vgcfgresto
> >on all of them. The archive you use shall _not_ include the recently added
> >disk.
> >
> Well, guess what? The LVM used in Mandrake doesn't make a backup copy. 
> And of course I hadn't executed it myself.... So as such I cannot 
> restore the exact configuration. Is pvcreate still the way to go then? 
> Please advice!
> 
> Best regards,
> 
> Sander
> 
> >
> >Regards,
> >Heinz    -- The LVM Guy --
> >
> >
> >On Sun, Feb 02, 2003 at 01:14:28AM +0100, Sander Alberink wrote:
> >  
> >
> >>Hello all,
> >>
> >>I write to you with a rather grave problem. I have a small LVM setup at 
> >>home, consisting of 4 partitions. These were created by the Mandrake 8.2 
> >>  installation system. After deciding to upgrade the system to Mandrake 
> >>9.0, I found out that I had another partition lying around which was 
> >>also prepared for LVM use. I had meant for that disc to use later on in 
> >>  a different scheme for my /usr partition but never got around to do it.
> >>However, during installation I decided to add it to the LVM. The idea 
> >>was that I would extend the FS later (of course, I was not going to 
> >>involve this LVM setup in the rest of the installation, I would do all 
> >>that manually.)
> >>
> >>But as you probably guessed, something went horribly wrong during 
> >>install time and my LVM setup is properly hosed. I wanted to re-create 
> >>the setup, but alas: I forgot which was the disk that I added.
> >>
> >>The name of the LV (there was only 1) was home, the disks involved were 
> >>/dev/hda1, /dev/hda[4-6].
> >>
> >>Output of pvscan:
> >>----------------------------------------------------------------------
> >>pvscan -- reading all physical volumes (this may take a while...)
> >>pvscan -- walking through all physical volumes found
> >>pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part1"  is 
> >>associated to an unknown VG (run vgscan)
> >>pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part4"  is 
> >>associated to an unknown VG (run vgscan)
> >>pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part5"  is 
> >>associated to an unknown VG (run vgscan)
> >>pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part6"  is 
> >>associated to an unknown VG (run vgscan)
> >>pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part7"  is 
> >>associated to an unknown VG (run vgscan)
> >>pvscan -- total: 5 [1.97 GB] / in use: 5 [1.97 GB] / in no VG: 0 [0]
> >>
> >>-----------------------------------------------------------------------
> >>
> >>output of vgscan:
> >>-----------------------------------------------------------------------
> >>vgscan -- reading all physical volumes (this may take a while...)
> >>vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
> >>vgscan -- WARNING: This program does not do a VGDA backup of your volume 
> >>group
> >>
> >>-----------------------------------------------------------------------
> >>
> >>output of pvdisplay /dev/hda1 (this partition belonged to the LV for sure)
> >>-----------------------------------------------------------------------
> >>pvdisplay -- getting physical volume size
> >>--- Physical volume ---
> >>PV Name               /dev/ide/host0/bus0/target0/lun0/part1
> >>VG Name               home
> >>PV Size               399.62 MB / NOT usable 3.62 MB [LVM: 121.00 KB]
> >>PV#                   1
> >>PV Status             NOT available
> >>Allocatable           yes (but full)
> >>Cur LV                1
> >>PE Size (KByte)       4096
> >>Total PE              99
> >>Free PE               0
> >>Allocated PE          99
> >>PV UUID               NCf9U6-nqVy-zn3K-upFo-S0PB-SFqb-o2ERjs
> >>-----------------------------------------------------------------------
> >>
> >>If you need any further information, please let me know!
> >>I do hope you can help me with this, since I stand to loose a lot of 
> >>personal data, of which exists no backup (of course, you guys probably 
> >>hear this all the time).
> >>
> >>Best regards,
> >>
> >>Sander Alberink
> >>
> >>
> >>_______________________________________________
> >>linux-lvm mailing list
> >>linux-lvm sistina com
> >>http://lists.sistina.com/mailman/listinfo/linux-lvm
> >>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >>    
> >>
> >
> >*** 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 Sistina com                           +49 2626 141200
> >                                                       FAX 924446
> >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >
> >_______________________________________________
> >linux-lvm mailing list
> >linux-lvm sistina com
> >http://lists.sistina.com/mailman/listinfo/linux-lvm
> >read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >  
> >
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm sistina com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

*** 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 Sistina com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-



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