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[ubuntu] Is it possible to have multiple partitions on a mdadm RAID array?

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http://ubuntuforums.org – A while back I created a RAID 6 array consisting of 5 2TB drives and formatted it with XFS and set up the block and stripe size appropriately. Yesterday I added two more 2TB drives to the array and it is almost done reshaping the array. While running that I realized that XFS is optimized for the number of drives, and so far as I can tell there is no way to change that after the fact. Since I have less than 4TB of data that I need to maintain I thought perhaps I could format the new unused space on the array with ext4, copy the data, then remove the XFS partition and expand the ext4 partit (Hardware)

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Submitted by xskl on 12/03/2012 – Made popular on 12/03/2012

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Hi all,

I tried to upgrade my file server box running 11.04 64 bit server with 5 drives in a array to 11.10 server.

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After a restart which stalled, I did a hard reboot and now mdadm can't see the RAID 6 array anymore, LVM can't find the volume which was on that raid array.

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Growing a raid 5 array 2 years 42 weeks ago

Hello,

I have 3 x 1.5TB drives is a raid 5 array, at the moment the storage capacity is enough, but soon I will need to expand this. I have a spare 1.5TB drive that I am thinking about adding to the array.

So far I have read mixed articles/posts, some saying it can be done, others say it can't.

From what I understand I use:

Hi there:

Thanks for reading this thread and I thank you in advance for any help you can provide.

So this is what happened... I noticed that my MDADM RAID 5 array with drives ordered: /dev/sd[EFGHIABCDKJ]1 reported a failed drive -- /dev/sdb1. I stopped the array and ran smartctl -t long /dev/sdb1 and received a pass.

i had an mdadm raid6 array with 13x1TB drives. Within 10 minutes 3 of these drives fell out of the array... we assume bad cable to the controller card and replaced, however now we need to get the drives back into a working array.

because md0 was marked as failed we removed the mdadm array and made a new md0 with the original 13 drives. 1 failed again during rebuild so we now have a degraded md0.

I just finished setting up a RAID5 array with 3 new 1.5TB hard drives using mdadm. I spent the last 5 days trying to get the RAID array working. Everything is up and running now except I have not been able to share folders on this drive using Samba. I can share files in my home directory and on my NTFS drive, but not the RAID array. I am trying to access the shares from a Windows Vista PC.

Hi all,

I've got a little file/web server box that runs Ubuntu 12.04 64 bit server with five 2TB Western Digital hard drives.

The drives are the "Advanced format" type (i.e. 512/4096 byte sectors).

Now, my setup is a RAID-6 array (/dev/md0) made up of /dev/sda thru /dev/sde.

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