I have unraid 7.01 with 2 disks array, and 1 disk pool device. the problem is not enough space when I tried copy 160G documents from windows to pool device named datapool, but actually the disk has 12.7TB free space and 3.28TB used with btrfs system.Partition format:GPT: 4KiB-aligned

what I have done is:

1. set minimum free space of every folders on datapool to 10GB.

2. run balance already.

   still not working. Pls help me how to fix it

   here is the filesystem status:btrfs filesystem usage:

   Overall:
       Device size:		  14.55TiB
       Device allocated:		   3.03TiB
       Device unallocated:		  11.52TiB
       Device missing:		     0.00B
       Device slack:		   3.50KiB
       Used:			   2.98TiB
       Free (estimated):		  11.57TiB	(min: 5.81TiB)
       Free (statfs, df):		  11.57TiB
       Data ratio:			      1.00
       Metadata ratio:		      2.00
       Global reserve:		 512.00MiB	(used: 0.00B)
       Multiple profiles:		        no
   
                Data    Metadata System                                
   Id Path      single  DUP      DUP       Unallocated Total    Slack  
   -- --------- ------- -------- --------- ----------- -------- -------
    1 /dev/sdc1 3.02TiB  8.00GiB  64.00MiB    11.52TiB 14.55TiB 3.50KiB
   -- --------- ------- -------- --------- ----------- -------- -------
      Total     3.02TiB  4.00GiB  32.00MiB    11.52TiB 14.55TiB 3.50KiB
      Used      2.97TiB  3.20GiB 352.00KiB                             

diagnostics

tower-diagnostics-20250626-2036.zip

What is the share name you are copying to?

my pool device : datapool

share folder name: /mnt/datapool/data

what i want to copy: a folder with many files, approximately 160G

from: windows to Nas

when I tried copy anyway ignoring the alert message, when it copy until about last 10%, alert message will show again, and can't copy anthing more. used metadata UDP wil jump to 3.9G, so I guess it might related to the metadata space. but I dont know why total metadata UDP is only 4G, and how to expand it.

Don't see a reason for the error, try copying the files until it fails, then post new diags immediately after.

You have both disk share and user share enabled, that's not recommended because it's prone to user error, but I don't see what would cause the stated issue either.

Thank you guys.

here is the diags right after it failed.

tower-diagnostics-20250627-1956.zip

here is the setting.

i dont have disk share now. before i tried it.

I have 2 apps on docker which set download folders on datapool, one is qbittorrent which is on, another is FileBrowser-PNP which is stopped. I dont find any setting may relate to the problem.

I have copied two folders (30G and 40G+)to the same directory(/datapool/data), it worked.

but at the almost end of copying process, the speed goes down to 100+kb

and here is the btrfs filesystem usage info:

I cant understand, why Device allocated: 3.08TiB, meanwhile keep Device unallocated: 11.47TiB. it seemed only use the "data single" space.

There's nothing logged, there are some strange characters on that photo, could be an issue with the source files.

37 minutes ago, ardiro said:

3.08TiB, meanwhile keep Device unallocated: 11.47TiB. it seemed only use the "data single" space.

This is normal with btrfs, it will allocate more space as needed.