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sunpyo
September 17th, 2009, 03:56 PM
A lot of you may know I'm having this problem accessing information on my Raid 5 Array. I've done a lot of things and finally resorted to trying out #mdadm --create...

However when I attempted there was no indication of a filesystem. Seeing that nothing was recognized, I decided not to create the array. Normally something like filesystem is recognized or something of that nature would come out, however there is no indication of it.

I know that the filesystem in this array is an ext3. I confirmed it with WD. (These HD were taken out of a NAS drive called a "WD NAS ShareSpace". Here are some things that people have been suggesting, here are certain ways I've thought of doing correcting this:

First I can try to do the #mdadm --create. I have already tried #mdadm --assemble and the raid is created, however I cannot mount or see any of the files inside. When I do this command:



#mdadm --create /dev/md2 --level=5 --raid-devices=4 missing /dev/sdb4 /dev/sdc4 /dev/sdd4
mount: /dev/sdb4 appears to be part of a raid array
level=raid5 devices=4 ctime=Fri Apr 3 03:55:58 2009
mount: /dev/sdc4 appears to be part of a raid array
level=raid5 devices=4 ctime=Fri Apr 3 03:55:58 2009
mount: /dev/sdd4 appears to be part of a raid array
level=raid5 devices=4 ctime=Fri Apr 3 03:55:58 2009
Continue creating array? n


Seemed useless in my eyes if there were not going to be any sort of filesystem. People also suggested that I can do this:



#fsck.ext3 -cc -f -v -y /dev/md2


However I don't know what this does and I'm afraid of losing data. Also this is a pretty huge device. When the raid is assembled it is close to 6 TB or so. Any input would be appreciated. Here's stats and stuff if you guys need to see it. (http://www.linuxquestions.org/questions/linux-server-73/help-with-wd-nas-recovery-4-x-2.0-tb-raid-5-755401/)