Re: Apparent total loss of all Raid 1 data from both drives`
- From: Robin Laing <Robin.Laing@xxxxxxxxxxxxxxx>
- Date: Fri, 06 Mar 2009 09:59:52 -0700
Robert Karge wrote:
Robin,
Thanks for the reply.
The rebuilt array, MD0, df shows only 1% used.
These disks are not included in LVM.
Bob Karge
On Thu, Mar 5, 2009 at 12:36 PM, Robin Laing <Robin.Laing@xxxxxxxxxxxxxxx <mailto:Robin.Laing@xxxxxxxxxxxxxxx>> wrote:
Bruno Wolff III wrote:
On Thu, Mar 05, 2009 at 10:26:57 -0500,
Robert Karge <rkargeconsulting@xxxxxxxxx
<mailto:rkargeconsulting@xxxxxxxxx>> wrote:
Any help would be very much appreciated. I have reloaded
F10 (on the boot
drive) but both drives from the original Raid 1 still appear
to be totally
empty.
It is paradoxical how much the total loss of years of work
and data teaches
about better backup functionality.
It is unlikely that you have really lost all of the data based
on what you
said you did. You do want to be careful about what you do now so
that you
don't make things worse while trying to fix things.
The rescue disk suggestion is probably the way to start.
If you are going to try to do something dangerous, you may want
to consider
pulling one of the disks. This has its own set of risks though
and you would
want to make sure if you got things back, that you back stuff up
before
trying to add the disk back into the raid array.
I will agree with this. statement.
With a 500GB drive, I would use this as a work disk. I would do an
install that doesn't look at the RAID drives. I would actually
disconnect them.
Now you said that you rebuilt the RAID. After to did a rebuild, did
you have the same LVM settings? I ask this because I had a real
nightmare with LVM and a RAID 1 some time ago. I refuse to use LVM now.
How much data is on the rebuilt array? What does df give you?
If worse comes to worse, you can use forensic tools to scan your
drives for data. I had to do this with my problem. I put the one
drive into a USB port and mounted it read only to scan the drive.
The worse thing you can do is panic and rush. It took me almost a
week to recover some data after I forgot to back it up when I did a
full system redesign and rebuild.
Good luck.
-- Robin Laing
Okay, this is not the best sign. It shows that your inodes have been reset and possibly your partition tables as well.
This doesn't mean your data is lost though.
As I said earlier, look at tools like foremost and other recovery tools.
Here are some links to get you started.
http://linuxshellaccount.blogspot.com/2008/08/recovering-deleted-files-by-inode.html
http://blog.lxpages.com/2007/06/21/linux-file-recovery/
http://linux.sys-con.com/node/117909/print
http://hardware.slashdot.org/hardware/08/05/12/2330200.shtml
http://www.informationweek.com/news/storage/disaster_recovery/showArticle.jhtml?articleID=208403254
Take your time to work on this.
This is an interesting read
http://www.hardwaresecrets.com/article/245
--
Robin Laing
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- From: Robert Karge
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