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Forum Discussion
Markf_93
Jun 02, 2016Aspirant
Readynas 104 Volume empty after Clean-up
Hello, since some weeks my Raid-Configuration is degraded, because the primary disk (3TB) failed in my 4 bay configuration with 2x3TB and 2x4TB in total. The HDD is physicaly damaged and can't b...
- Jun 09, 2016
Hi,
well thanks for your answers.
Finally I found a solution.
I dind't pay the 75€, because I think this won't guarantee me to get the data back. I also didn't buy any expensive programs you find with google when you search for "btrfs recovery tool".
After reading and understanding how btrfs works (this filesystem is used by Readynas in X-Raid mode) I tryied out the "btrfs restore /dev/md126 /media/USB_HDD_1" command. You just need to attach a USB harddrive to your Readynas and with the command all data (with proper folder structure) are copied to your USB harddisk (don't need to format the harddisk to btrfs or so on - just used ntfs).
That's all.
So to everyone having trouble with a corrupt filesystem - try this out. It worked for me fine. No files are damaged.
I'm not sure what's the reason for my filesystem corruption but I expect that during the clean-up btrfs function the Readynas OS killed it somehow.
Right now I try to sell the Readynas and I will never come back to Netgear (storage) products.
Cheers
omicron_persei8
Jun 13, 2016Luminary
Actually, in your configuration, you have two RAID arrays, md127 and md126. That's why you can run the btrfs restore from md126, because btrfs is smart enough. But for ther users who want to do this, they'll probably need to run the restore from md127.
Also, if your HDDs were marked as inactive, maybe they were just not mounted, so there might have been an easier solution.
Anyway, glad you were able to copy the data out.
If I remember correctly, btrfs restore also copies the snapshots, so if your destination HDD is NTFS, that might cause an issue with used space.
By "clean-up", do you mean scrub or balance? I don't think there is a "clean-up" option. I wouldn't run either on a degraded array. It's stressful, and it's exactly the time when you can't afford a second device failure.
Markf_93
Jun 16, 2016Aspirant
Hey,
I tried to mount it.. many times with many options.
By "clean-up" i mean a scrub. I just missed the work.
Right now I learned my lessons.
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