Fedora 16 at Linode kernel 3.1.4-1.fc16.x86_64 Problem: blkfront: barrier: empty write xvda op failed blkfront: xvda: barrier or flush: disabled end_request: I/O error, dev xvda, sector 528384 Aborting journal on device xvda-8. Solution: tunefs -o nobarrier /dev/xvda