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Cache pool used size wrong

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Hi Unraid community,

 

The cache pool used size seems to be wrong.

du -h /mnt/cache/ shows 259G used. However, web UI shows 352G used.

My configuration is 2 500G nvme SSD btrfs RAID1.

One thing might be related is I removed the docker vDisk, if I remember correctly, the default docker vDisk is 100G? Which almost aligns with the size difference.

 

Any ideas?

Thanks!

Edited by Harrywong

  • Community Expert

du is unreliable with btrfs, value on the GUI will be correct, you can also get more detailed info with:

 

btrfs fi usage -T /mnt/cache

 

  • Author
8 hours ago, johnnie.black said:

du is unreliable with btrfs, value on the GUI will be correct, you can also get more detailed info with:

 


btrfs fi usage -T /mnt/cache

 

Thanks! Do you know why there are 94.76GiB / 93.76GiB unallocated, and how to allocate them?

 

Overall:
    Device size:                 931.52GiB
    Device allocated:            743.00GiB
    Device unallocated:          188.52GiB
    Device missing:                  0.00B
    Used:                        655.24GiB
    Free (estimated):            137.68GiB      (min: 137.68GiB)
    Data ratio:                       2.00
    Metadata ratio:                   1.00
    Global reserve:               33.61MiB      (used: 0.00B)

                  Data      Metadata System              
Id Path           RAID1     single   single   Unallocated
-- -------------- --------- -------- -------- -----------
 2 /dev/nvme0n1p1 371.00GiB        -        -    94.76GiB
 1 /dev/nvme2n1p1 371.00GiB  1.00GiB  4.00MiB    93.76GiB
-- -------------- --------- -------- -------- -----------
   Total          371.00GiB  1.00GiB  4.00MiB   188.52GiB
   Used           327.58GiB 77.39MiB 80.00KiB           

  • Community Expert
2 hours ago, Harrywong said:

and how to allocate them?

No need to, they will be allocated as needed.

 

2 hours ago, Harrywong said:

Data      Metadata System              
Id Path           RAID1     single   single   Unallocated

You pool isn't redundant because of this bug, there are also instructions to convert.

  • Author
8 hours ago, johnnie.black said:

No need to, they will be allocated as needed.

 

You pool isn't redundant because of this bug, there are also instructions to convert.

Thank you! Seems now it is redundant:

Overall:
    Device size:                 931.52GiB
    Device allocated:            744.06GiB
    Device unallocated:          187.46GiB
    Device missing:                  0.00B
    Used:                        656.83GiB
    Free (estimated):            136.39GiB      (min: 136.39GiB)
    Data ratio:                       2.00
    Metadata ratio:                   2.00
    Global reserve:               34.42MiB      (used: 0.00B)

                  Data      Metadata System              
Id Path           RAID1     RAID1    RAID1    Unallocated
-- -------------- --------- -------- -------- -----------
 2 /dev/nvme0n1p1 371.00GiB  1.00GiB 32.00MiB    93.73GiB
 1 /dev/nvme2n1p1 371.00GiB  1.00GiB 32.00MiB    93.73GiB
-- -------------- --------- -------- -------- -----------
   Total          371.00GiB  1.00GiB 32.00MiB   187.46GiB
   Used           328.34GiB 78.42MiB 80.00KiB

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