Hello, I am on Unraid 6.6.7 with 4 SSDs in my cache pool.
One of my devices has corruption_errs, and I would like advice on what I should do. Do I need to replace the drive?
root@tower:~# btrfs dev stats /mnt/cache
[/dev/sdb1].write_io_errs 0
[/dev/sdb1].read_io_errs 0
[/dev/sdb1].flush_io_errs 0
[/dev/sdb1].corruption_errs 67
[/dev/sdb1].generation_errs 0
[/dev/sdc1].write_io_errs 0
...
Some additional information about my cache pool:
root@tower:~# btrfs fi show /mnt/cache
Label: none uuid: f58a539b-5b41-4497-a98f-16eb6fbf48fc
Total devices 4 FS bytes used 734.32GiB
devid 1 size 476.94GiB used 197.02GiB path /dev/sdb1
devid 2 size 223.57GiB used 0.00B path /dev/sdc1
devid 3 size 953.87GiB used 673.00GiB path /dev/sde1
devid 4 size 953.87GiB used 673.03GiB path /dev/sdd1
root@tower:~# btrfs fi df /mnt/cache
Data, RAID1: total=676.00GiB, used=671.49GiB
Data, single: total=188.01GiB, used=61.84GiB
System, single: total=32.00MiB, used=144.00KiB
Metadata, single: total=3.01GiB, used=1012.19MiB
GlobalReserve, single: total=512.00MiB, used=0.00B
root@tower:~# btrfs fi usage /mnt/cache
Overall:
Device size: 2.55TiB
Device allocated: 1.51TiB
Device unallocated: 1.04TiB
Device missing: 0.00B
Used: 1.37TiB
Free (estimated): 673.47GiB (min: 608.45GiB)
Data ratio: 1.78
Metadata ratio: 1.00
Global reserve: 512.00MiB (used: 0.00B)
Data,single: Size:188.01GiB, Used:61.84GiB
/dev/sdb1 188.01GiB
Data,RAID1: Size:676.00GiB, Used:671.49GiB
/dev/sdb1 7.00GiB
/dev/sdd1 673.00GiB
/dev/sde1 672.00GiB
Metadata,single: Size:3.01GiB, Used:1012.19MiB
/dev/sdb1 2.01GiB
/dev/sde1 1.00GiB
System,single: Size:32.00MiB, Used:144.00KiB
/dev/sdd1 32.00MiB
Unallocated:
/dev/sdb1 279.92GiB
/dev/sdc1 223.57GiB
/dev/sdd1 280.84GiB
/dev/sde1 280.87GiB
The reason I found this was from going through this post, which triggered me to run "btrfs dev stats" command.
Here is a screenshot from the WebGUI.
Any suggestions would be greatly appreciated!