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RAID 5 Storage Not Reading Properly in Ubuntu 20.4.02

cn flag

I have a RAID 5 storage setup and just got a notification that one of the HDD s has gone bad.

I plugged the RAID into my windows PC to diagnose (I can't get the QNAP utility to run in Ubuntu) and confirmed the issue, swapped the bad HDD, and had it start rebuilding itself.

When I plugged it back into Ubuntu, gparted says the 'primary gpt table is corrupt but the backup appears ok so that will be used' and is telling me the primary drive is a 'basic data partition' without any data on it. It wants me to re partition /reformat it.

The drive is formatted in exFAT which had been working fine before this. When I plug it back into windows it reads fine. Not sure how to get Ubuntu to read this properly without losing my data as it looks like it wants me to re partition the whole thing.

I tried just popping in a flash drive that was formatted in exFAT and that reads OK.

Any suggestions would be appreciated. 
David avatar
cn flag
I do not know if it can be fixed or how but I can tell you why. You let windows try to fix a raid for Ubuntu.
in flag
Has the RAID array finished repairing itself? If so, you may want to run some more of the Qnap diagnostics on the volume to ensure it’s complete.
Erik Rydman avatar
cn flag
The RAID is still rebuilding, but as far as I know that shouldn't affect it. As I mentioned, windows reads it fine.
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