Jul 28 10:34:20 Zeus kernel: XFS (md6): Corruption detected. Unmount and run xfs_repair
Jul 28 10:34:20 Zeus kernel: XFS (md6): xfs_iread: validation failed for inode 100
Jul 28 10:34:20 Zeus kernel: XFS (md6): Corruption detected. Unmount and run xfs_repair
Jul 28 10:34:20 Zeus kernel: XFS (md6): xfs_iread: validation failed for inode 100
You need to Check Disk Filesystem on disk 6 (BTW, this disk is still missing from the array and is being emulated)
Also, turn off show PHP warnings in Tips & Tweaks (you enabled that). It's very annoying when you've got Preclear installed