I copied all of my data off my original array and created a 5 disk zfs pool (with 10 slots for future expansion) and then copied all my data back to it. 

 

It has been working great until today when I rebooted. 

 

Now the pool shows as Unmountable: Unsupported or no file system in the Unraid GUI. It also shows that the drives in this pool now needs to be formatted. I don't want to do this as I'm sure it will destroy all the data on the drives. 

 

However, the pool is working.

 

• The pool shows as functional in zfs master
• Running "zpool status" shows the pool is online and working fine with no errors
• All the shares on the pool work fine
• I can copy files too and from the zpool shares. 

 

Any idea what I need to do? I've been using unraid for years, but this is my first ZFS attempt. 

 

Thank you

 

 

 

 

 

Edited October 7, 20232 yr by r_hood2

Please post the diagnostics but the pool being online and the GUI showing umnountbale suggests the pool was already online before array start.

2 hours ago, JorgeB said:

Please post the diagnostics but the pool being online and the GUI showing umnountbale suggests the pool was already online before array start.

 

 

Thank you for your insight JorgeB..... What you said fit what I was thinking, that the GUI displaying it was the only issue. 

 

So I created another zpool via the gui, and set it to a small mirrored drive setup

 

That fixed the gui

 

Now it displays even after removing the temp mirror zpool 

 

Thank you for your help