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Post by the2ndclory on Aug 25, 2006 20:40:19 GMT 7
Below is the message I sent to Thecus Tech Support
I powered up the unit, the array came up. I pulled all the drives and then slid them back in one by one, the raid wouldn't reassemble. I restarted the unit, the array still wouldn't reassemble. I thought that upgrading to the lastest firmware would solve the problem but it didn't. Now I just get an error in the logs:
Assemble RAID from [dev/sdb2 dev/sdc2] Incorrect LVM archticher <-------- logs spelled architecture wrong, not me mdadm: failed to RUN_ARRAY /dev/md0: Input/output error
I'm praying you can provide me with some way to downgrade the firmware and that you don't say I've lost my data because it was over 300GB worth.
I'm hoping anyone with any suggestions would kindly try and help me out here because my heart is in a hole right now.
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Post by N2100Owner on Aug 25, 2006 20:42:37 GMT 7
If you pull out all the HDD, won't that destroy your RAID?
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Post by zendaver on Aug 26, 2006 9:04:04 GMT 7
the2ndclory, Is your RAID problem with the drives in a Thecus N5200?
Did you problem start when you powered up one day, or did you start yanking drives in and out while it was powered up and running?? More details.
If you just updated a Thecus N5200's firmware to v1.00.01.3, then you definitely "lost your RAID". It is definitely stated in the firmware changelog notice. The RAID configuration is stored on an internal flash drive along with the firmware. IF you had previously downloaded the N5200's "System Configuration" (web menu System+Config Mgmt), and IF you went back to the previous firmware (which they say you can't) then maybe you could get your RAID state restored.
RAID does provide some data protection but the state of the RAID configuration can still be a volatile thing. That is, the RAID can "break" because of corruption/loss in the data storing the RAID configuration and system state. It can't just analyze the drive's data to guess your RAID configuration and settings (don't know why not exactly).
I don't know if a RAID'ed drive set from one controller can be brought to another, even if its the same controller chipset.
Good luck, post back where you go with this.
-ZenDaveR
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Post by the2ndclory on Aug 26, 2006 10:54:37 GMT 7
Yes, it was stupid and I would beat myself right now if I could but I did yank all the drives while it was on. Then I put them back in, and nothing. Rebooted, nothing. The data is still on the drives, I just need to know how to get to it.
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Post by zendaver on Aug 27, 2006 22:51:21 GMT 7
the2ndclory, I had better luck contacting Thecus from their support web email (<http://www.thecus.com/support_tech.php>) than regular email. It maybe that this kind of data recovery is outside of what they consider supported.
How many drives were in your RAID? What RAID level were they in? What is reported on the N5200 web page on the "Storage+Disks" page, the individual disk status' too, and the "Status+Disks" page? With a simple RAID 1 mirror, you might be able to just plug it into a PCs SATA port (or via a USB adaptor) and access an individual drive there (using Ext2 installable file system <http://www.fs-driver.org/>). For other RAIDs you might have, it might give you more options to try and recover using a PC. I don't know if, at the data level, RAID 5 is always done the same, or if you just can't move drives to another RAID controller.
I hope you hear from someone with more experience recovering from broken RAIDs...
-ZenDaveR
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Post by the2ndclory on Aug 28, 2006 20:10:01 GMT 7
Thank you for your suggestion ZenDaveR but that is the route I went through to contact them and I have yet to recieve an email back. I'm not were the box is right now (Its in my living quarters and I'm at the internet cafe (I'm deployed)) so I can't give you all the details, only those off the top of my head. There were 4 320GB drives in RAID 5. Individual disk status is "OK". It just hit me that I should do a google search today and it seems there are processes out there but some are not that easy. Edit: I just found a program named RAID reconstructor that may fix help me, but seen as it makes a repaired image of the drive that I can then further process I still need a place to fit ~900GB of stuff and seen as I'm deployed stuff takes forever to get to me.
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