[ 2013.792840] blk_print_req_error: 89 callbacks suppressed
[ 2013.792845] operation not supported error, dev loop0, sector 1023872 op 0x9:(WRITE_ZEROES) flags 0x8000800 phys_seg 0 prio class 2
[ 2013.795565] operation not supported error, dev loop0, sector 588 op 0x9:(WRITE_ZEROES) flags 0x8000800 phys_seg 0 prio class 2
[ 2013.798135] operation not supported error, dev loop0, sector 15854 op 0x9:(WRITE_ZEROES) flags 0x8000800 phys_seg 0 prio class 2
[ 2013.803923] operation not supported error, dev loop0, sector 278530 op 0x9:(WRITE_ZEROES) flags 0x8000800 phys_seg 0 prio class 2
[ 2013.876864] EXT4-fs (loop0): mounted filesystem with ordered data mode. Quota mode: none.