I have a brand new unRAID array and have been battling issues with the cache drive. I was trying to transfer a 60gb file to the array today and notice that the transfer speeds weren’t what they should be. I discovered that nothing was being transferred to the cache drive, almost all data was being written to the array. I changed the cache drive settings for the share to “prefer” and files were still going to the array. I change the cache settings to “only” and got an error that the cache drive was full, despite there being 5 240gb SSD’s in RAID 5 and this is literally the first time any data has been transferred to it. When I run
btrfs fi usage /mnt/cache
This is the output I see:
WARNING: RAID56 detected, not implemented
Overall:
Device size: 1.09TiB
Device allocated: 2.06GiB
Device unallocated: 1.09TiB
Device missing: 0.00B
Used: 384.00KiB
Free (estimated): 0.00B (min: 8.00EiB)
Data ratio: 0.00
Metadata ratio: 2.00
Global reserve: 16.00MiB (used: 0.00B)
Data,RAID5: Size:24.00GiB, Used:21.51GiB (89.61%)
/dev/sdb1 6.00GiB
/dev/sdc1 6.00GiB
/dev/sdd1 6.00GiB
/dev/sde1 6.00GiB
/dev/sdf1 6.00GiB
Metadata,RAID1: Size:1.00GiB, Used:176.00KiB (0.02%)
/dev/sdd1 1.00GiB
/dev/sdf1 1.00GiB
System,RAID1: Size:32.00MiB, Used:16.00KiB (0.05%)
/dev/sdc1 32.00MiB
/dev/sde1 32.00MiB
Unallocated:
/dev/sdb1 217.57GiB
/dev/sdc1 217.54GiB
/dev/sdd1 216.57GiB
/dev/sde1 217.54GiB
As you can see, basically all of the data is “unallocated”. What can I do to resolve this?
Edit to add diagnostic file.
avenue-stor-01-diagnostics-20200913-1434.zip