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.
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.
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.
I have a raid 5 array constructed of three partitions, one of which is another array. This array should be assembled during boot so that it can be mounted and other services can access the mounted data.
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.
Now, my RAID array is /dev/md0 and composed of 5 drives with no partitions. That is, I created the array, formatted /dev/md0 with EXT4 and that's it.
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 have a 6x2TB software RAID array configured as RAID6 (two redundant drives, 8GB of usable space) running in Fedora 17. After the power issues in the NE last week, the system booted up to some problems with the array and maybe some other issues since it forced into maintenance mode.
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:
Came home from work to a crashed RAID5 array in my 10.04 box.
I went into Disk Utility and stopped the array, and when I tried to restart the array I received this error:
Error assembling array: mdadm exited with exit code 1: mdadm: metadata format 00.90 unknown, ignored.
mdadm: cannot open device /dev/sdc1: Device or resource busy
mdadm: /dev/sdc1 has no superblock - assembly aborted
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