my 1 harddrive Lost its File System (unmountable)
my one unraid was updating the plex it was processing ... updating deleting whatever
i noticed it stopped worked.. so i decided to reboot unraid server... it didn fix things
i noticed in my arroy my 12TB hard drive is now unmountable : no file system
it is a BTRFS setup
how do i recover.. remember a while back had SSD issue for cache but i cant remember... and this is the HDds so this be slightly different
what can i run that fixs the file system to
Looks like your download_drive was sdc when array started but disconnected and reconnected as sde, so it isn't assigned.
It also has 22 pending sectors. You should see SMART warnings for that disk on the Dashboard page, and you should have gotten notifications for it.
You should replace the drive, doesn't look like it has much if anything on it.