(SOLVED) Unmountable: No pool uuid

[Muhamad Aidil Karim]

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".

 

 

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.

 

[JorgeB]

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

wipefs -a /dev/nvme1n1p1

Then start array and post new diags.

[Muhamad Aidil Karim]

Hi JorgeB,

 

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

 

 

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?

 

[JorgeB]

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.

[Muhamad Aidil Karim]

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.

 

Thanks you very much for your help

👍

 

 

Edited November 11, 2022 by Muhamad Aidil Karim