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



Luis,

You still haven't provided the relevant details of your configuration. The df output you provided isn't relevant in terms of the data recovery. You haven't even mentioned what file system the lost data was on.

You mention mirroring - what was doing the mirroring? Hardware RAID? Software MD RAID? Software DM RAID? LVM?

Gordan

On 01/06/2011 07:51 PM, Luis Cebamanos wrote:
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 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.


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