Data Recovery : recovery, data

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01.13.2006 at 03:08AM PST, ID: 21695209

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6.8

Data Recovery

Zone: Linux Administration

Tags: recovery, data

Hi All,

I have a RHEL3 Web Server that may have crashed.

Upon boot the GRUB stage 2 comes up and and I'm left with the line GRUB >

This has never happened and would like to know how or if it's possible to recover some of my web pages on the server.

Thank you

-eta

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Question Stats

Zone: OS

Question Asked By: luvcooperation

Solution Provided By: rindi

Participating Experts: 4

Solution Grade: B

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01.13.2006 at 03:28AM PST, ID: 15690436

gg234:

Greetings luvcooperation,

I would recomend use this tool to get you data back really nice one

http://www.cgsecurity.org/index.html?testdisk.html

Thanks

01.13.2006 at 04:15AM PST, ID: 15690642

luvcooperation:

Hi and Thanks again,

Now I'm reading the web page and my understanding is that I can create a bootable rescue disk.
I was told from my ISP that I will need one to boot due to damaged hard disk.
I am downloading ' Bootable CD ISO (RIP-14.8.grub.iso.bin) '
For the bootloader is loading in GRUB.
Is this correct?

What I want to do is to rescue as much data as possible from the /var/www directory.
As far as other partitions I'm not interested.

Can you give a step by step guide in the process of recovering the file using Test Disk.
I will be going to my ISP to do this and would like to have an overview before I attempt it.

Thank you

eta

01.13.2006 at 04:59AM PST, ID: 15690911

gg234:

check this link for complete documentation how to install and how to use this test disk

http://www.cgsecurity.org/phpwiki/index.php/testdisk

hope this helps

01.13.2006 at 06:00AM PST, ID: 15691305

Rank: Wizard

jlevie:

The first think to do would be to boot up in rescue mode from the first CD of the RHEL distribution. Allow it to try to find your Linux system and if it succeeds you'll be able to examine the system for damage. In particular check the contents of /boot to see that all of the stuff necssary to boot is still there. There are several possible causes of Grub stopping at the prompt, but the most common cause is because Grub can't find the kernel, initrd, or root file system. So check to see that all of that is present and usable.

Note that you can use the rescue boot to copy data to another disk.

01.13.2006 at 06:29AM PST, ID: 15691518

luvcooperation:

I was told from my ISP that GRUB asked to build the kernel.

Does this mean that the kernel is gone?

Also,

1. After you rescue boot... using the CD, how am I able to see the content of the disk?

2. Will the boot CD let me ftp the data to another server?

Thank you

01.13.2006 at 08:05AM PST, ID: 15692504

Rank: Wizard

jlevie:

If the rescue boot is able to find your Linux system and the file systems are valid, they'll be mounted on /mnt/sysimage. So you can examine the file system contents with the usual commands (ls, more, etc).

01.14.2006 at 04:08AM PST, ID: 15699721

Rank: Master

rindi:

If you can't recover the system using the levie's advice, you can also get yourself a copy of knoppix, boot with that and then you should be able to access and copy off whatever you need.

http://knoppix.net

Possibly your kernels are still there, but is is possible that an update didn't work properly and your grub.lst file is bad. With the first CD or knoppix you should be able to repair anything like that easily.

Accepted Solution

01.14.2006 at 04:34AM PST, ID: 15699771

luvcooperation:

After booting from CD1:

I booted as linux rescue

But upon /mnt/sysimage I get a reply ' can not read /etc/fstab.

Also when I view the partitions I only see the sda partitions.
/boot is gone.

I've tried to search on the net for any information but can't seems to pin point it.
Is there a reason why this happened?

I will get a copy of knoppix and give it a try.

Thank you

eta

01.17.2006 at 05:38AM PST, ID: 15719117

luvcooperation:

Hi,

I've now brought back the server and booted with Knoppix.

I am able to see some files but many of the files seem to be missing.

When I try to mount sda2, I get the message,

wrong fs type, bad option, bad superblock on /dev/sda2
missing codepage or other error
In some cases useful info is found i syslog
try dmesg | tail or so

after running dmesg I get error messages of this type:

I/O error
Drive Ready Seek Complete Error
Uncorrectable error
invalid journal inode
EXT3-fs error
unable to read indo block

in many locations. (Although I am not sure what they mean, just picked out any lines with the word error)

Now I'm wondering is it possible to recover any data that has dissppeared?

Thank you

-eta

01.17.2006 at 06:30AM PST, ID: 15719457

Rank: Master

rindi:

If your filesystem actually is/was ext3, you can run e2fsck --help to get the syntax and then use that utility to try repairing your filesystem. If the data was really important, though, I'd look for a data recovery service, for which you will have to pay something, but normally the recovery rate is pretty good. Make sure you ask for a quote before commiting your disks to them. You can google for such a service in your area.

http://www.gillware.com/?campaign=googleContent

is supposed to be one of the priceworthiest.

01.17.2006 at 06:34AM PST, ID: 15719492

gg234:

i don't understand why don't you use testdisk to recover your data actually this is your original question and you came back to the same point

01.17.2006 at 11:39PM PST, ID: 15726607

luvcooperation:

Hi qq234,

I downloaded test disk and gave it a try, but was unable to boot from the cd.
I don't know why I couldn't boot, seeing good recommendations for the linux os.

So I gave Knoppix a try.
With Knoppix I was able to boot and view. Although it didn't solve the problem.

So I opened another forum and have decided to try other recovery softwares out there.
Currently I am trying R-Linux a freeware and runtime.
It is still scanning and with many errors, so I am already getting ready to resort to professional service.

Thank you

-eta

rssdds

10.16.2007 at 10:51AM PDT, ID: 20087515

I think I had that same problem where GRUB stage 2 came up and and I was left with the line GRUB
You may want to consider a disk recovery service. I did and I had good experiences with Sherlock Data Recovery Services in New York, NY. It saved me a lot of expense and grief in redoing weeks of work.
They were able to recovery several different kinds of Apple Imac , Windows and Linux systems.
They have a website at SherlockDataRecovery.com.

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