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(SOLVED) Unmountable: No pool uuid

Featured Replies

Hi ,

 

Hopefully you guys can help me out for this issue. I add 1 more nvme ssd to cache pool as redundancy and the process is success. However after 1 day, the new nvme ssd got issue and not detected. I remove back the ssd from the cache pool because it detect no device & the system run as normal with single nvme ssd cache pool. 

 

Today 1 re-seat the nvme back and got detect by the system back (as unasigned device),  but the original cache pool nvme ssd show "Unmountable: No pool uuid".

 

image.thumb.png.5e86a543c0d90a97c2c8231b5c6e2036.png

 

I found this thread in the forum but not sure is this the same solution to run command below?

btrfs-select-super -s 1 /dev/sdX1

 

I afraid if i run the command will loose all my data. Got my several important vm inside. 🤕 Need you guys help on this.

 

I attach also the diagnostic file.

aiesb-svr-01-diagnostics-20221111-1502.zip

 

Thanks guys.

 

Solved by JorgeB

  • Community Expert
  • Solution

Without rebooting since the last diags but with the array stopped type:

wipefs -a /dev/nvme1n1p1

Then start array and post new diags.

  • Author

Hi JorgeB,

 

Thanks for quick reply. You are saving my day. Now the cache pool is up again.

 

image.thumb.png.b1edc1a7260ee89995e116e810449dbe.png

 

I attach new diags just in case.

aiesb-svr-01-diagnostics-20221111-1851.zip

 

Is it safe to add back "Dev 3" to the pool as redundancy?

 

  • Community Expert
26 minutes ago, Muhamad Aidil Karim said:

Is it safe to add back "Dev 3" to the pool as redundancy?

Yes, you can now add it back.

  • Author

Hi JorgeB,

 

Now i added back "Dev 3" in the cache pool and balancing is running. Hopefully my new nvme ssd no repeated issue again.

image.thumb.png.5204d51f6d84ffc75ebab4434f4dd010.png

 

Thanks you very much for your help

👍

 

 

Edited by Muhamad Aidil Karim

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