How do I remove a disc from the cache pool?

[Joshwaaa]

I have a cache pool. I'd like to remove the smallest drive. I already went to the FAQs "How do I remove a device from a btrfs or zfs pool?" to save anyone the trouble of telling me to go to the FAQs but I get the message "The page you are trying to access is not available for your account." So how do I remove a drive from my cache pool?

Thanks

[itimpi]

Is it a redundant pool?    Is it BTRFS?  You should probably post your system's diagnostics zip file to get informed feedback.

[Joshwaaa]

14 minutes ago, itimpi said:

Is it a redundant pool?    Is it BTRFS?  You should probably post your system's diagnostics zip file to get informed feedback.

It is a BTRFS cache pool. 

[Joshwaaa]

barkerserver-diagnostics-20230609-2110.zip

[itimpi]

Since the diagnostics show it is a BTRFS RAID1 pool, it should be just a case of:

• stopping the array
• unassigning the smaller drive
• restarting the array
• waiting for the balance operation to complete to make the full space of the larger drive to be available. 

Since it is now a single device pool it will no longer be redundant unless you later add in another drive.

[Joshwaaa]

23 minutes ago, itimpi said:

Since the diagnostics show it is a BTRFS RAID1 pool, it should be just a case of:

• stopping the array
• unassigning the smaller drive
• restarting the array
• waiting for the balance operation to complete to make the full space of the larger drive to be available. 

Since it is now a single device pool it will no longer be redundant unless you later add in another drive.

 

@itimpi This is what I get when I stop the array. If I unassign the drive I can't change the slot number and I can't restart the array.

 

 

 

[itimpi]

Have you tried checking the "Yes I want to Do this" checkbox by the Start button?

[Joshwaaa]

@itimpi OK thanks I tried that but now I have this. Can I delete the unassigned? I tried to reduce the slots but 3 is the lowest it will allow.

[Joshwaaa]

I suppose the next step is to physically remove the drive?

 

[JorgeB]

12 minutes ago, Joshwaaa said:

Can I delete the unassigned?

Stop the array, unassign cache3 to and re-assign to cache1 slot and if there aren't any warnings, you are still v6.9 but IIRC it works with that one, just start the array