griben Posted August 29, 2023 Share Posted August 29, 2023 It's the first time I had to replace a faulty drive. I replaced it for a larger disk (6To to 8To) and I also improved my setup by adding a SSD for cache but when the rebuild finished, the new drive is still unmountable and the data that was on the faulty drive missing. Is there still a possibility to retrieve it somehow? At the very least I have to understand what went wrong in order to avoid this in the future. I schedule a parity check every week and I let the faulty drive in, is it possible that the parity check corrected the parity by substracting the data that it was unable to read because of the faulty drive ? Here below the situation at this moment. Quote Link to comment
trurl Posted August 29, 2023 Share Posted August 29, 2023 Attach Diagnostics to your NEXT post in this thread Quote Link to comment
itimpi Posted August 29, 2023 Share Posted August 29, 2023 Was the drive showing as unmountable before the rebuild started? Asking because a rebuild does not clear an unmountable state. Handling of unmountable drives is covered here in the online documentation accessible via the ‘Manual’ link at the bottom of the GUI or the DOCS link at the top of each forum page. Quote Link to comment
griben Posted August 30, 2023 Author Share Posted August 30, 2023 Here the diagnostic. The drive was shown unmountable before the rebuild began. I was tempted to format it but the message was pretty clear that format is not part of the process of rebuild so I assumed the rebuild process would create a FS. library-diagnostics-20230830-2018.zip Quote Link to comment
JorgeB Posted August 30, 2023 Share Posted August 30, 2023 First upgrade your Unraid release, there's a bug with the one you are running, after upgrading unassign disk7 and post new diags to see if there are also other issues. Quote Link to comment
griben Posted September 6, 2023 Author Share Posted September 6, 2023 Ok, I've upgraded unraid, unassign disk7 and rebooted. Here the logs. library-diagnostics-20230906-2252.zip Quote Link to comment
JorgeB Posted September 7, 2023 Share Posted September 7, 2023 Diags after array start please. Quote Link to comment
griben Posted September 9, 2023 Author Share Posted September 9, 2023 Unraid refuse to start without the disk 7 assigned even in maintenance mode, the button is greyed so I started in maintenance mode with it. library-diagnostics-20230909-1115.zip Quote Link to comment
JorgeB Posted September 9, 2023 Share Posted September 9, 2023 1 hour ago, griben said: Unraid refuse to start without the disk 7 assigned You need to check the "I want to do this" box, below the start button. Quote Link to comment
griben Posted September 10, 2023 Author Share Posted September 10, 2023 I should I've seen this. It allowed me to format my new cache drive. library-diagnostics-20230910-1336.zip Quote Link to comment
Solution JorgeB Posted September 10, 2023 Solution Share Posted September 10, 2023 Emulated disk7 is mounting, you can now reassign the disk to rebuild. Quote Link to comment
griben Posted September 14, 2023 Author Share Posted September 14, 2023 It worked, everything is back, thank you. 1 Quote Link to comment
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