Comment 7 for bug 874727

There is also a separate media error class:

Feb 28 17:36:58 ubuntu kernel: [ 1199.540413] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Feb 28 17:36:58 ubuntu kernel: [ 1199.540426] ata1.01: BMDMA stat 0x64
Feb 28 17:36:58 ubuntu kernel: [ 1199.540441] ata1.01: cmd c8/00:28:60:85:71/00:00:00:00:00/f2 tag 0 dma 20480 in
Feb 28 17:36:58 ubuntu kernel: [ 1199.540443] res 51/40:28:6b:85:71/00:00:00:00:00/f2 Emask 0x9 (media error)
Feb 28 17:36:58 ubuntu kernel: [ 1199.540449] ata1.01: status: { DRDY ERR }
Feb 28 17:36:58 ubuntu kernel: [ 1199.540453] ata1.01: error: { UNC }