Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002
Mar  5 02:09:53 chakujiu kernel: sdb: Current [descriptor]: sense key=0x3
Mar  5 02:09:53 chakujiu kernel:     ASC=0x13 ASCQ=0x0
Mar  5 02:09:53 chakujiu kernel: Descriptor sense data with sense descriptors (in hex):
Mar  5 02:09:53 chakujiu kernel:         72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00 
Mar  5 02:09:53 chakujiu kernel:         02 6d 4f 48 
Mar  5 02:09:53 chakujiu kernel: end_request: I/O error, dev sdb, sector 40718152
Mar  5 02:09:53 chakujiu kernel: Buffer I/O error on device sdb, logical block 5089769
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: SCSI device sdb: 40718160 512-byte hdwr sectors (20848 MB)
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete
Mar  5 02:09:53 chakujiu kernel: ata2.00: speed down requested but no transfer mode left
Mar  5 02:09:53 chakujiu kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Mar  5 02:09:53 chakujiu kernel: ata2.00: cmd c4/00:08:48:4f:6d/00:00:00:00:00/e2 tag 0 cdb 0x0 data 4096 in
Mar  5 02:09:53 chakujiu kernel:          res 51/01:00:48:4f:6d/00:00:00:00:00/e2 Emask 0x1 (device error)
Mar  5 02:09:53 chakujiu kernel: ata2.00: configured for PIO0
Mar  5 02:09:53 chakujiu kernel: ata2: EH complete