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

[Sander Alberink <alberink@stamppot.demon.nl>]

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
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>
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>  
>