After moving the SSD drive from the external hard drive that i moved into my drive bay. when I powered up the bay. i keep get unmountable: NO pool UUID. this Cache drive. i tried moving from Cache drive 2 and i still can't it to work. i don't know what else to try. can someone help me out?

Go to Tools-Diagnostics and attach the complete Diagnostics ZIP file to your NEXT post in this thread. 

tower-diagnostics-20200904-1457.zip

With the array stopped change cache slots to 1, click on cache and set filesystem to auto, start the array and then grab and post new diags.

 

 

Hello, 
I am also running into this concern.
I had (1x) cache drive. I made a duplicate of it for backup before I proceeded.

I put the cache drive back into the server.
added slot 2 cache disk for - RAID 1 cache setup
When I start the array my main cache disk states: Unmountable: No pool uuid <xfs> 
It also stated it required to format my main cache disk -- I assume UnRAID stated this as that is the process to make a new RAID 1 cache pool

So that was not good. So I stopped the array
removed <unassigned the second cache disk> 
edited the slots back to (1X) cache disk

Selected <auto> for the FS
started the array
and I was back to normal.

Moving forward:
What I am looking to do if possible is

• Keep my existing production cache disk
• Add another cache disk (RAID1 Mirror)
• Have a redundant cache setup

However, based on what I attempted to do, that may not be possible with existing data on the production cache disk

 

I would love some feedback on this.

Thanks, 

10 minutes ago, bombz said:

also running into this concern

Post diagnostics

On 12/19/2020 at 8:26 PM, bombz said:

Hello, 
I am also running into this concern.
I had (1x) cache drive. I made a duplicate of it for backup before I proceeded.

I put the cache drive back into the server.
added slot 2 cache disk for - RAID 1 cache setup
When I start the array my main cache disk states: Unmountable: No pool uuid <xfs> 
It also stated it required to format my main cache disk -- I assume UnRAID stated this as that is the process to make a new RAID 1 cache pool

So that was not good. So I stopped the array
removed <unassigned the second cache disk> 
edited the slots back to (1X) cache disk

Selected <auto> for the FS
started the array
and I was back to normal.

Moving forward:
What I am looking to do if possible is

• Keep my existing production cache disk
• Add another cache disk (RAID1 Mirror)
• Have a redundant cache setup

However, based on what I attempted to do, that may not be possible with existing data on the production cache disk

 

I would love some feedback on this.

Thanks, 

Hello again, 
I am going to line up some time to take my server offline again.
I would like to set this up as RAID1 mirror so my cache is protected.
I realize you would like logs, I plan to get to that.

From what I can tell based on what I have tried, I cannot add a second cache disk to the array (on the fly) to create a RAID1 mirror on the cache set (2x cache disk).
What is the best method to adding a second cache disk to my array with data already on cache disk #1?

Edited January 24, 20215 yr by bombz

51 minutes ago, bombz said:

What is the best method to adding a second cache disk to my array with data already on cache disk #1?

 

It depends how your current cache disk is formatted and the general health of your server. You won't get any useful answers unless you provide your diagnostics. There's just too much guesswork involved.

On 1/24/2021 at 5:49 PM, John_M said:

 

It depends how your current cache disk is formatted and the general health of your server. You won't get any useful answers unless you provide your diagnostics. There's just too much guesswork involved.

I have resolved this concern.
Thank you.

On 3/24/2021 at 12:09 PM, bombz said:

I have resolved this concern.
Thank you.

how?