CentOS - Aug 2009 - OT: Fortunate clueless dd chum - lvm recovery

Looks like the chum did not have to lose any data.

Wiping out the MBR and the next 63 blocks apparently only wiped out grub 
stage1, partition table, and  part of the lvm config data.


I get to try to do a lvm 'recovery' at his expense now but this is my 
first time...has anybody ever tried restoring lvm config data back to 
the md/pv device?


Cheers,

Christopher

Chan Chung Hang Christopher wrote:
> Looks like the chum did not have to lose any data.
>   
I cannot believe he actually tried to create a new filesystem on sda 
according to the .bash_history file after the dd commands. I think I 
need a titanium clueby4. Anybody know where I can get one?

----- Original Message ----
> From: Chan Chung Hang Christopher <christopher.chan at
bradbury.edu.hk>
> To: CentOS mailing list <centos at centos.org>
> Sent: Friday, 14 August, 2009 3:31:32
> Subject: [CentOS] OT: Fortunate clueless dd chum - lvm recovery
> 
> Looks like the chum did not have to lose any data.
> 
> Wiping out the MBR and the next 63 blocks apparently only wiped out grub 
> stage1, partition table, and  part of the lvm config data.
> 
> 
> I get to try to do a lvm 'recovery' at his expense now but this is
my
> first time...has anybody ever tried restoring lvm config data back to 
> the md/pv device?
> 
> 
> Cheers,
> 
> Christopher
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

First of all, I would dd a copy of the whole drive off to another drive, so you
can have a few goes at this.

How do you know only those bits where lost?