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Forum Discussion
ReadyNAS NV+ | Rebuilding X-RAID Array Exposed
Hello there; I have the following situation: I have a ReadyNAS NV+ with 4x2TB Seagate Barracuda. Disk3 went bad. The unit was ‘booting up’ forever and the reset button was pressed in order to ...
Thank you for the valuable tips, but I think I need to explain a bit further the purpose of my post here.
I don't Realy need to recover the data on my NAS because I had it backup.
However I am very interested to learn how to do it and it's only for educational purpose.
If I had valuable data I wouldn't even try to do it myself since $75 + $200 are highly fair and reasonable price and I would recommend anybody to go for it and don't take a chance.
In my case, as you pointed perfectly right, I did unplugged the unit probably more than once and I am sure that now the filesystem is indeed damaged/corrupted.
So, my questions are:
1) How do you go from there?...
2) How do you identify if it is recoverable or not?...
3) Is X-RAID EXACTLY the same as RAID5?...
4) Should I try to rebuild the filesystem with a brand new disk in slot 3 or should try do it first with only the good 3 disks (knowing that the filesystem is damaged on them and the unit will not mount the Volume C) ?...
Thank you again :-)
Well. this information will tell you how to mount the array in an x86 linux system: http://home.bott.ca/webserver/?p=306
This might help on file system repair: https://help.ubuntu.com/community/FilesystemTroubleshooting
XRAID on the NV+ is RAID5. Later on they added vertical expansion, and that is more complicated. However, it still uses standard linux tools underneath.
I am thinking that attempting to replace disk 3 right now won't help (and could make things worse). Though since this is just a learning experience, you could certainly try it at some point.
Again, thank you for the links and the info.
So, if I understand correctly I should:
- First, remove the disk3 and boot the unit with only the 3 good disks
- Should I open a terminal in Ubuntu and mount the NAS there or should I SSH directly the ReadyNAS ?
- Should I try to recreate the array first or check and repair the filesystem?...
It is true that it is for educational purpose but if I could avoid to mess-up from the beginning and get on the right track that would help a lot. :-)
Cubik wrote:
Again, thank you for the links and the info.
So, if I understand correctly I should:
- First, remove the disk3 and boot the unit with only the 3 good disks
Yes. This often works.
- Should I open a terminal in Ubuntu and mount the NAS there or should I SSH directly the ReadyNAS ?
If SSH is functioning on the NAS you could try mounting there. I don't know the exact steps though (and the info in the links might need some modification if you are executing it on the NAS). Perhaps PM mdgm?
The info in the link is assuming the disks are attached to the Ubuntu system.
- Should I try to recreate the array first or check and repair the filesystem?...
I wouldn't try repairing the array until you sort out the file system issue.
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