[   12.063460] blkfront: barrier: empty write xvda op failed
[   12.063475] blkfront: xvda: barrier or flush: disabled
[   12.063495] end_request: I/O error, dev xvda, sector 13145
[   12.063529] end_request: I/O error, dev xvda, sector 13145
[   12.063554] Buffer I/O error on device xvda1, logical block 1643
[   12.063575] lost page write due to I/O error on xvda1
[   12.063615] Aborting journal on device xvda1.
[   12.064315] EXT3-fs (xvda1): error: ext3_journal_start_sb: Detected aborted journal
[   12.064362] EXT3-fs (xvda1): error: remounting filesystem read-only