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Old 09-24-2008, 07:04 PM   #1
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Registered: Sep 2008
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mdadm Rebuild help!

I'm having some trouble rebuilding my raid 5 array with 5 x 500GB hard drives.

I come home the other day and discovered that my file server had crashed. It ended up being the motherboard, so I took the MB from my desktop and started going. I took this opportunity to upgrade to OpenSUSE 11, since the OS sits on a separate hard drive from the RAID array.

To give you an idea of my setup, I have a SIL24 SATA controller with a Adaptec SATA port multiplier. All of this runs into a 5-drive hot-swap bay.

I installed SUSE 11 on a new hard drive and booted up. I tried reassembling the array using the partition manager, but it could not detect the filesystem type. I ran various commands and it seems that every command returned something about the superblocks.

I then decided to run a mdadm --create --raid-level=5 --devices=5 /dev/sda1 .... etc command. Now when I try to mount the /dev/md0 device it says the fs is ext4.

The partitions are still there on each drive (Fd, Linux raid autodetect), and all I want to do at this point is get the array running so that I can get the over 1TB of data off.

Any help is appreciated.
Old 09-25-2008, 07:26 AM   #2
Registered: Sep 2008
Posts: 44

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The --create options for mdadm will blow away your existing array, essentially destroying all reference to your existing data. You can't mount the filesystem because it doesn't exist anymore.

Last edited by reddazz; 10-14-2008 at 05:53 PM. Reason: removed spammed link


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