I hope someone can help me. I have a server with two SSDs that contain a mirrored btrfs volume holding /, and multiple HDDs that are in a btrfs RAID10 array. I updated to linux 3.7.3 in testing, and it failed to boot. I booted from a USB drive, and reinstalled 3.6.?, and I still get failed to set xfermode (err_mask=0x40). I don't see anything in dmesg that makes a difference. The only thing that changed was the kernels, back and forth. Does anyone have an idea, or am I going to have to re-install? Thanks.