Cache read only after btrfs balance - VMs and docker service won't start

[Husker_N7242C]

Guys, my cache pool was unbalanced which was causing it to pause the VMs for no reason. I ran the btrfs balance start -dusage=50 /mnt/cache from terminal which completed successfully then I tried to run btrfs balance 75 but it gave an error that the cache was read only. The VMs and docker service crashed shortly after and I'm stuck.

 

I ran docker safe permissions but it didn't help.

 

I'd appreciate some advice. Thanks!

nas-diagnostics-20190614-0801.zip

[JorgeB]

Balance failed, there's likely metadata corruption, you can reboot and try again though it will probably fail again, if not done already before rebooting back up any important data on cache.

 

If it fails again best to backup, re-format and restore pool.

[Husker_N7242C]

Thanks Johnnie as always. That's a big bummer but at least I know what to do.