Cache Read Only and Docker Issues

[hybridtracer]

It seems like my cache is read only. Everything was fine but I can't access any of my Docker WebUIs anymore. I did some searching but I don't think I have the normal issue I've been seeing. There are no errors that I can tell.

 

root@NAS:~# btrfs balance start -dusage=75 /mnt/cache
ERROR: error during balancing '/mnt/cache': Read-only file system
There may be more info in syslog - try dmesg | tail
root@NAS:~# btrfs balance start -dusage=25 /mnt/cache
ERROR: error during balancing '/mnt/cache': Read-only file system
There may be more info in syslog - try dmesg | tail
root@NAS:~# btrfs dev stats -z /mnt/cache
[/dev/nvme0n1p1].write_io_errs    0
[/dev/nvme0n1p1].read_io_errs     0
[/dev/nvme0n1p1].flush_io_errs    0
[/dev/nvme0n1p1].corruption_errs  0
[/dev/nvme0n1p1].generation_errs  0
root@NAS:~# btrfs fi show /mnt/cache
Label: none  uuid: 3bdd2a6c-a527-4a33-838d-200712723d0c
        Total devices 1 FS bytes used 140.43GiB
        devid    1 size 465.76GiB used 163.02GiB path /dev/nvme0n1p1

Anyone have any ideas on what to try? This happened to me once before and I reformatted the cache. I'm hoping there is a better way without having to resetup my dockers.

nas-diagnostics-20200106-0253.zip

Edited January 6, 2020 by hybridtracer

[JorgeB]

You also have filesystem corruption on disk2 spamming the log, fix that first then reboot and post new diags.

https://wiki.unraid.net/Check_Disk_Filesystems#Checking_and_fixing_drives_in_the_webGui

[hybridtracer]

I did a check an repair on disk 2. After reboot, the cache came up as unmountable. 

nas-diagnostics-20200106-1326.zip

[JorgeB]

Cache pool is corrupt, best bet is to re-format, there are some options here to try and recover data if needed.

[hybridtracer]

Any thoughts on what may cause this? It is the second time it has happened. 

[JorgeB]

btrfs especially is very finicky with any hardware issues, add to that corruption also detected on a xfs filesystem and you likely have a hardware problem.