[Linux-cluster] How to re-store my lost data

[Luis Cebamanos]

Well, there are not backups of that valuable lost data but the cluster 
was using disk mirroring but no one has a clue of how to take advantage 
of that. Nobody here is a cluster expert and that has been the problem I 
guess.
We haven't really "touch" any important system file, after physically 
installed the hard disk, we realized that the cluster wasn't properly 
working. We rebooted the cluster without the old disks and that has been 
the result.
Worst scenario, we will need to call an expert, but we think it can not 
be a big deal as I said, we haven't modified the previous configuration...
On 01/06/2011 07:44 PM, Digimer wrote:
> On 01/06/2011 02:36 PM, Luis Cebamanos wrote:
>> Is a cluster with 16 nodes and I suspect the problem is in the head node:
>> $cat /proc/version
>> Linux version 2.6.11.4-21.11-smp (geeko at buildhost) (gcc version 3.3.5
>> 20050117 (prerelease) (SUSE Linux)) #1 SMP Thu Feb 2 20:54:26 GMT 2006
>>
>> df -T
>> Filesystem    Type   1K-blocks      Used Available Use% Mounted on
>> /dev/sda2     ext3    33032228  19971720  11382520  64% /
>> tmpfs        tmpfs     1027632         0   1027632   0% /dev/shm
>> /dev/sda1     ext3      124427      9412    108591   8% /boot
>> /dev/sda6     ext3     2063504     33820   1924864   2% /tmp
>> /dev/sda9     ext3   166698068 119970708  38259504  76% /users
>> /dev/sda8     ext3    32250392    966320  29645848   4% /usr/local
>> /dev/sda7     ext3     2063504    901804   1056880  47% /var
>>
>> We were trying to install new hard drives to the system but something
>> that we don't know went wrong and it ended up in almost 4 years of work
>> lost!!!
>> Please, let me know what else can I do to be able to get the data back!
>>
>> Best
> It's a bit late now, but I suppose you don't have backups?
>
> As for how to help, what you provided was only marginally helpful. We
> need a much more extensive overview of your setup and configuration,
> versions, etc. before we can have any idea if we can help.
>
> In the short term, don't try anything yourself without careful thought.
> If the data is very valuable, consider hiring a data recovery firm near
> you who can come and look at your setup.
>