Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


Closed Thread
  Search this Thread
Old 06-26-2009, 05:36 AM   #1
Registered: May 2009
Posts: 42

Rep: Reputation: 2
Cannot recover data, raid problem

Hello to all,
I have a server system which is configured with raid5 software (mdadm) . It is composed by 4 HDD SCSI each 37GB.
I have installed on it RedHat Linux 9, in the default configuration (so /boot a separate partition and the other ones with LVM)

My problem is that one of the partitions configured with raid 5 (Linux raid autodetect) i believe that it is on degraded or faulty state,

my system does boot up but it shows on the screen "Kernel panic , cannot find initrd"

I have very sensible data in there, and the problem is that I didn't make a backup. I want to just retrieve some of the data files there.

I managed to boot into the rescue mode with CD1 of RH9 and the commands which I tried to do:
# mdadm --examine --scan /dev/sda2 /dev/sdb1 /dev/sdc1 /dev/sdd1 > /etc/mdadm.conf
#mdadm -A -s
#cat /proc/mdstat --->>> it showed the raid array but only with three partitions exactly /dev/sda2 /dev/sdb1 /dev/sdc1

I have lvm so I entered:
#vgchange -a y vol0 (because volume group was not active)
#mount /dev/vol0/lv0 /mnt/lv0 -->> which I think is the / partition, and I couldn't copy my files (not all of them but the important ones),

it gave some I/O errors in copying (transfering with scp in another server).

so I gave:
#fsck /dev/vol0/lv0 and responded with Y (yes) to all of the questions (a huge number of inode problems)

and now again I can't copy my files.... :-(

My question is how can I recover my files, is there another way? I dont know if it is hardware related or software related, but when I check all of my 4 disks with scsi utilities they are shown all ok.

Your help would be very appreciated!

Thanks in advance.
Old 06-26-2009, 08:13 AM   #2
Senior Member
Registered: Dec 2002
Location: Mosquitoville
Distribution: RH 6.2, Gen2, Knoppix,arch, bodhi, studio, suse, mint
Posts: 3,187

Rep: Reputation: 53
it appears you are running raid on your questioning too. :>

please don't post in multiple forums.
Old 06-26-2009, 01:19 PM   #3
LQ Veteran
Registered: Nov 2005
Location: Annapolis, MD
Distribution: Arch/XFCE
Posts: 17,802

Rep: Reputation: 738Reputation: 738Reputation: 738Reputation: 738Reputation: 738Reputation: 738Reputation: 738
Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.

Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cannot recover data, raid problem enid Linux - Server 1 06-26-2009 02:55 PM
Cannot recover data, raid problem enid Linux - Software 1 06-26-2009 01:18 PM
Recover data from RAID 0 (fake RAID) from Win XP KiAnKo Linux - Hardware 4 04-23-2009 01:28 PM
How to recover data from RAID 1 partition edortizq Linux - Newbie 1 03-13-2009 03:12 PM
Software RAID to recover data from HW RAID ocschwar Linux - Hardware 5 02-25-2005 11:05 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 12:07 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration