Cache Issues Following Creation of Cache Pool

[PhilUK]

Hi all,

 

Hoping someone can help me.

 

I added a second SSD to my Unraid 6.8.1 server on Monday. I now have a 128GB SSD and a 120GB SSD in a btrfs cache pool.

 

Seemed to go absolutely fine, balance happened leaving a total available space showing on the cache of 248GB with 141GB used.

 

NOTE: I have an issue with the UDMA CRC error count on 'Cache' - it was not presenting any issues prior to the move to a pool. I have changed SATA cables since the error first presented itself and the count is stable.

 

Balance status shows this:

which based on searching, seem to be correct.

 

However... on boot up my server is not allowing docker to run. Fix common problems is throwing the following errors:

 

So I try to stop the server to diagnose / investigate. But it is now stuck 'retrying unmounting disk shares'

Going into terminal, I do ls /mnt

This shows only 2 remaining shares/mounted points. Theres nothing in disks, just a hangover from unassigned devices which I use to mount a usb drive for backup. The USB device is showing as unmounted in the GUI and does not show up in /mnt/disks.

 

 

Then lsof /mnt/cache & lsof /mnt/disks

But nothing is showing at all.

 

I'm far from an expert in linux/unraid but I think I'm doing all the right things.

I can't get any further, HELP! The critical cause here is the creation of the cache pool having borked my server because it now thinks it is full...

 

Thanks in advance.

 

 

[JorgeB]

Cache has dual data profiles, that suggests one of the devices dropped offline at some point, can you get the diags, using the GUI or by typing diagnostics on the console?