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 Post subject: Re: Rebuilding EBD
PostPosted: Fri Mar 11, 2011 10:00 pm 
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Joined: Sun Mar 06, 2011 9:45 pm
Posts: 16
I think I'm running out of ideas.

I've managed to recreate the array but when I run the command mkfs.xfs -q -f /dev/md0 it spurts up the error: Error getting MD array info from /dev/md0

Running out of ideas here, is there a mdadm guide anywhere which goes through deleting the array and recreating it? Also the space is partitioned as XFS isn't it?

I'm on the verge of giving up I think.


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 Post subject: Re: Rebuilding EBD
PostPosted: Fri Mar 11, 2011 10:54 pm 
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Joined: Sun Mar 06, 2011 9:45 pm
Posts: 16
If I use the legacy --build option instead of --create the mkfs.xfs succeeds in formatting the filesystem but then the drive never ever auto mounts /dev/md0 whereas if I use --create the mkfs.xfs always fails with the error I posted in my previous reply.

Think I'm going to give up or today, there is something not quite right and I just can't put my finger on it.

Good news is that the person that sent me the dumps of the partitions is coming down to my area later on this week so I've asked if I can use his drive to clone both of HDDs with, this looks like the only sure fire way of getting a fully working drive.


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 Post subject: Re: Rebuilding EBD
PostPosted: Sat Mar 12, 2011 8:41 am 
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Joined: Mon Jun 16, 2008 10:45 am
Posts: 6022
Which commands did you use to create the array? Can you post the output of cat /proc/mdstat when the array is assembled? Does dmesg have something to say? /var/messages?
Quote:
so I've asked if I can use his drive to clone both of HDDs with, this looks like the only sure fire way of getting a fully working drive.
Hey, that's the wimp way.


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 Post subject: Re: Rebuilding EBD
PostPosted: Sat Mar 12, 2011 12:13 pm 
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Joined: Sun Mar 06, 2011 9:45 pm
Posts: 16
I used the commands but slightly modifed as posted in the early part of this thread, so I used but I did this when I had the drives mounted on my PC running Ubuntu Desktop:

mdadm --create /dev/md0 -v --raid-devices=2 --level=linear /dev/sda2 /dev/sdb

mke2fs -j /dev/md0

I've since tried re-creating the array in the OS running on the Lacie box itself but whenever the mkfs.xfs command is run it doesn't do anything gives the error:

Error getting MD array info from /dev/md0


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 Post subject: Re: Rebuilding EBD
PostPosted: Sat May 14, 2011 12:29 pm 
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Joined: Sat May 14, 2011 12:21 pm
Posts: 3
any news? i'm trying to do the same thing! :D


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 Post subject: Re: Rebuilding EBD
PostPosted: Sun May 15, 2011 11:11 am 
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Joined: Sat May 14, 2011 12:21 pm
Posts: 3
I guess the problem is in mdadm configuration


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 Post subject: Re: Rebuilding EBD
PostPosted: Sun May 15, 2011 11:40 am 
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Joined: Mon Jun 16, 2008 10:45 am
Posts: 6022
You builded your array on an external box?

Try adding --metadata=0.90 to the command:
Code:
mdadm --create /dev/md0 -v --raid-devices=2 --level=linear /dev/sda2 /dev/sdb --metadata=0.90
and make sure your mdadm.conf matches your UUID.


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 Post subject: Re: Rebuilding EBD
PostPosted: Mon Nov 12, 2012 12:44 pm 
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Joined: Sun Jul 20, 2008 8:46 am
Posts: 19
Any success stories rebuilding the EBD linear RAID with the above method ?

Thanks in advance


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