swap / remove cache ssds in pool


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Hello everyone,

 

at the moment I am running a single SSD cache pool with 3 drives. First I started with a single 500GB SSD, then I added a 1TB SSD and later another one.

 

Currently cache is the 500GB, cache1 is 1TB and cache2 is 1TB. All drives are part of a btrfs pool.

 

My goal is to remove the 500GB and just run the 2 1TB SSD in a 2-drive cache pool.

 

So I stopped the array, set the cache(0) drive to unassinged and started the array. That did not work and the cache pool showed "Unmountable: Too many missing/misplaced devices" error.

Next I set my newest 1TB SSD as the cache(0) drive and started again but the same error was shown.

 

Is there a "simple" way to remove the "old" 500GB SSD or is move all the stuff from the cache to the array the way to go, also with a cache pool?

 

Thanks!

 

 

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Thanks for the replay.

 

I set the (first) cache drive to "no" but then I cannot start the array (see my attachment)

 

Any ideas? I have no clue also thought a swap in the cache pool is quite easy

 

 

Screenshot 2021-05-08 144514.jpg

 

 

When I swap Cache and Cache 3 I can start the array but again with the unmountable error. Start the array anyway and run the diagnostics. Again see the attachments

 

Thanks a lot

Screenshot 2021-05-08 144514.jpg

Screenshot 2021-05-08 145008.jpg

unraid-diagnostics-20210508-1453.zip

Edited by Bob@unraid
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Thanks a lot Jorge.

Checked the mark and the array started without any problem. When I tried I think I just oversee that mark 😅

 

One last question: Is it possible to swap / set / change the 2 remaning disk to Cache and Cache 2 and get rid of "Cache "not installed""?

 

Thanks again

Screenshot 2021-05-09 174509.jpg

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  • 2 weeks later...

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