Hi!, 

 

I just built a new unRAID machine with v6.8.3, and after adding two cache devices I don't see a BTRFS mirror:

 

Quote

root@nas01:~# btrfs fi usage /mnt/cache/
Overall:
    Device size:                 186.80GiB
    Device allocated:             25.03GiB
    Device unallocated:          161.77GiB
    Device missing:              500.00MiB
    Used:                         21.23GiB
    Free (estimated):            162.54GiB      (min: 81.66GiB)
    Data ratio:                       1.00
    Metadata ratio:                   1.50
    Global reserve:               16.00MiB      (used: 0.00B)

Data,single: Size:22.00GiB, Used:21.22GiB (96.48%)
   /dev/sdf1      22.00GiB

Metadata,single: Size:1.00GiB, Used:0.00B (0.00%)
   /dev/sdf1       1.00GiB

Metadata,DUP: Size:1.00GiB, Used:400.00KiB (0.04%)
   /dev/sdf1       2.00GiB

System,single: Size:32.00MiB, Used:16.00KiB (0.05%)
   /dev/sdf1      32.00MiB

Unallocated:
   /dev/sdf1     161.28GiB
   missing       500.00MiB
 

 

Is there something I'm missing?

nas01-diagnostics-20201201-2051.zip

Edited December 1, 20205 yr by cyruspy

Stop array, unassign cache2, start array, stop array, re-assign cache2, that should do it, if it doesn't please post new diags.

Hello, 

 

Tried to do that, the start turned button turned grey when I unassigned the non-used (missing?) disk. Then I distroyed everything and started from scratch and now seems to be working properly.

 

Quote

root@nas01:~# btrfs fi usage -T /mnt/cache
Overall:
    Device size:                 372.62GiB
    Device allocated:             86.06GiB
    Device unallocated:          286.56GiB
    Device missing:                  0.00B
    Used:                         42.28GiB
    Free (estimated):            164.14GiB      (min: 164.14GiB)
    Data ratio:                       2.00
    Metadata ratio:                   2.00
    Global reserve:               16.00MiB      (used: 0.00B)

             Data     Metadata  System
Id Path      RAID1    RAID1     RAID1    Unallocated
-- --------- -------- --------- -------- -----------
 1 /dev/sdf1 42.00GiB   1.00GiB 32.00MiB   143.28GiB
 2 /dev/sdg1 42.00GiB   1.00GiB 32.00MiB   143.28GiB
-- --------- -------- --------- -------- -----------
   Total     42.00GiB   1.00GiB 32.00MiB   286.56GiB
   Used      21.14GiB 320.00KiB 16.00KiB
 

Thanks!

29 minutes ago, cyruspy said:

the start turned button turned grey when I unassigned the non-used (missing?) disk.

You just needed to check a box next to the start button to allow starting anyway, but yes, now looks fine.