Hi Everybody,
I really need help right now. I've read lots of online-manual but I couldn't figure-out because my English is not very good and I'm really pissed off right now

I have CentOS server and I've changed partitions and everything is f...cked up now.
I have reallyyyyy important files on this machine so I have to recovery them.

When I try to boot up my machine, I get kernel panic error and it looks like this:
http://img856.imageshack.us/img856/690/unledwdb.jpg

Could you guys please help me about that?
How can I use this machine again?


Thank you.

... Well you speak french pretty well ;-)

First things first, can you boot to a live CD and try to mount the partitions containing the data, and copy them off to a USB drive, or network share..

Booting to a live cd, will at least get you to a command line so we can see what happened.

What did you do to the partition tables that caused the problem?

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Thank you fukawi1!
I think you wanted to write English instead of French :P but I just started to learn French anyways )

When I access rescue mode, it says: http://i.imgur.com/bVPqn.jpg
fdisk -l: http://i.imgur.com/UwTUP.jpg

Try "parted -l"

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I did, but just give me error
check that out: http://i.imgur.com/ZqHYn.jpg

What did you do to "change partitions"?

I am making a wild guess here, that you may have changed the partitions without re configuring the LVM first?

I am not sure if the recovery console will give you access to LVM tools. If it doesn't boot into a live cd, and run:

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I can't use those commands on rescue mode.
Live CD's mean: the CD which is works without installation on Harddisk right?
I wanted to download it from http://projects.centos.org/trac/livecd/ but I can't open-up this page. Wierd

I would recommend you download TRK, burn it to a CD, and reboot using it.. There will be an option to drop to a shell, and from there, you can run the commands above.

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All right, I'm downloading TRK now. I think I have changed the partitions without configring the LVM first.
I'm not sure what I did actually. :S

Please visit this side you will got your answer
linuxdocs.org

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I use pvdisplay and lvdisplay now.

Please check that out:
http://i.imgur.com/S0MaQ.jpg

and this one:
http://i.imgur.com/OyKtS.jpg

Ok..
Would still be really handy to know what you did?

What do you mean by What exactly did you do?

It would appear to me you have corrupted the partition table. That is why lvdisplay is giving you the "cant find device with uuid" error..

http://www.gnu.org/software/parted/m...toc.html#TOC24
have a read through that, and the man page for "parted", which should be on the TRK CD. parted has a recovery option. Which I believe scans the drive looking for the start/finish of filesystems, and tries to recreate the partition table based on that.
I am not certain how this works with LVM though..

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fukavi1, thanks for everything.
Well I used to have couple of OS on my disk and also different partitions for them and I just delete one of them.
After that I added this partition as a sda3 on my server. It's worked very well and I've never had any problem at all.

After that I deleted different os again and I extended sda3 and after that, everything is f..cked up.

sda1 for boot I guess
sda2 is supposed to be my data partition I meant my all files in there and I have to get them back
sda3 is my extra space that I just tried to added.

I also tried to add some volumegroup as well and I don't remember what exactly I did.

So Can I just access sda2?

I've just tried to mount sda2 but I got error massage

mount /dev/sda2 /test
mount: unknown filesystem type 'LVM2_member'

you wont be able to mount the sda2 partition as it is only a container for the lvm...

but you CAN try mounting /dev/VolGroup00/*, as these devices are what will actually contain the filesystem...

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