Yesterday I updated my Unraid Server to 6.12.6 and after rebooting the cache drives are now showing unmountable. 

I've been digging through the forums and googling the issue but I cannot seam to fix it. With the cache drives showing unmountable all my dockers are showing with no data. 

I have included my Diagnostics

tower-diagnostics-20240122-2232.zip

Post the output of

btrfs fi show

 

root@tower:~#
btrfs fi show
Label: none  uuid: b4669878-357a-4f64-ae3d-8bfa6fb04ee2
    Total devices 1 FS bytes used 23.75GiB
    devid    1 size 200.00GiB used 26.52GiB path /dev/loop2

Label: none  uuid: 5136a67a-1df8-45ac-a002-237974608d5a
    Total devices 1 FS bytes used 1.06MiB
    devid    1 size 1.00GiB used 126.38MiB path /dev/loop3

warning, device 1 is missing
ERROR: cannot read chunk root
Label: none  uuid: 25a3cb20-7c62-4370-b1c4-7c446223d6f1
    Total devices 3 FS bytes used 39.72GiB
    devid    2 size 232.89GiB used 62.00GiB path /dev/sda1
    *** Some devices missing

1 hour ago, Jason P said:

Label: none  uuid: 25a3cb20-7c62-4370-b1c4-7c446223d6f1
    Total devices 3 FS bytes used 39.72GiB
    devid    2 size 232.89GiB used 62.00GiB path /dev/sda1
    *** Some devices missing

Pool filesystem is made of 3 devices, and only one is available, any idea what happened to the other ones?

I'm thinking the one missing, is the (sdg) that's unmountable 

Edited January 23, 20242 yr by Jason P

There are two missing, but getting one of them back online should be enough, if the pool was redundant, post the output of:

fdisk -l /dev/sdg

 

root@tower:~#
fdisk -l /dev/sdg
Disk /dev/sdg: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: CT1000BX500SSD1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes