What is happening to my harddisk?

From: Peter Teoh
Date: Fri Sep 17 2010 - 11:54:39 EST

I have been getting endless stream in dmesg like the following:

[ 602.800594] ata7.00: status: { DRDY ERR }
[ 602.816578] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.816584] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 602.816596] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 602.816597] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.816601] ata7.00: status: { DRDY ERR }
[ 602.836572] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.836578] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 602.836589] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 602.836590] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.836594] ata7.00: status: { DRDY ERR }
[ 602.852579] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.852584] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 602.852596] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 602.852597] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.852600] ata7.00: status: { DRDY ERR }
[ 602.868585] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.868590] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 602.868601] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 602.868602] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.868606] ata7.00: status: { DRDY ERR }
[ 602.884586] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.884592] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 602.884607] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 602.884608] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.884613] ata7.00: status: { DRDY ERR }
[ 602.900614] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 602.900620] sr 6:0:0:0: CDB: Get event status notification: 4a 01
00 00 10 00 00 00 08 00
[ 602.900633] ata7.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 602.900635] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 602.900638] ata7.00: status: { DRDY ERR }
[ 602.900664] sr0: CDROM (ioctl) error, command: Get event status
notification 4a 01 00 00 10 00 00 00 08 00
[ 602.900673] sr: Sense Key : Aborted Command [current] [descriptor]
[ 602.900677] sr: Add. Sense: No additional sense information
[ 603.800595] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 603.800600] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 603.800612] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 603.800613] res 51/04:00:00:69:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 603.800617] ata7.00: status: { DRDY ERR }
[ 603.816587] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 603.816592] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 603.816603] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 603.816604] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 603.816608] ata7.00: status: { DRDY ERR }
[ 603.832576] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 603.832583] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 603.832594] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 603.832595] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 603.832598] ata7.00: status: { DRDY ERR }
[ 603.848574] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 603.848580] sr 6:0:0:0: CDB: Get event status notification: 4a 01
00 00 10 00 00 00 08 00
[ 603.848594] ata7.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 603.848595] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 603.848598] ata7.00: status: { DRDY ERR }
[ 603.848623] sr0: CDROM (ioctl) error, command: Get event status
notification 4a 01 00 00 10 00 00 00 08 00
[ 603.848632] sr: Sense Key : Aborted Command [current] [descriptor]
[ 603.848636] sr: Add. Sense: No additional sense information
[ 604.797852] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.797859] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.797871] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.797872] res 51/04:00:00:69:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.797875] ata7.00: status: { DRDY ERR }
[ 604.812577] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.812583] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.812594] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.812595] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.812599] ata7.00: status: { DRDY ERR }
[ 604.828570] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.828576] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.828587] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.828588] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.828592] ata7.00: status: { DRDY ERR }
[ 604.848581] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.848587] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.848598] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.848599] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.848603] ata7.00: status: { DRDY ERR }
[ 604.864859] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.864865] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.864876] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.864877] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.864881] ata7.00: status: { DRDY ERR }
[ 604.880571] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.880576] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.880588] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.880589] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.880592] ata7.00: status: { DRDY ERR }
[ 604.899138] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.899145] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.899156] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.899158] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.899161] ata7.00: status: { DRDY ERR }
[ 604.912584] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.912590] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.912602] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.912604] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.912607] ata7.00: status: { DRDY ERR }
[ 604.930032] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.930038] sr 6:0:0:0: CDB: Get event status notification: 4a 01
00 00 10 00 00 00 08 00
[ 604.930052] ata7.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 604.930053] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.930057] ata7.00: status: { DRDY ERR }
[ 604.930137] sr0: CDROM (ioctl) error, command: Get event status
notification 4a 01 00 00 10 00 00 00 08 00
[ 604.930147] sr: Sense Key : Aborted Command [current] [descriptor]
[ 604.930151] sr: Add. Sense: No additional sense information
[ 604.944597] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.944603] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 604.944615] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 604.944616] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.944619] ata7.00: status: { DRDY ERR }
[ 604.960570] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 604.960578] sr 6:0:0:0: CDB: Get event status notification: 4a 01
00 00 10 00 00 00 08 00
[ 604.960591] ata7.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 604.960593] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 604.960596] ata7.00: status: { DRDY ERR }
[ 604.960623] sr0: CDROM (ioctl) error, command: Get event status
notification 4a 01 00 00 10 00 00 00 08 00
[ 604.960632] sr: Sense Key : Aborted Command [current] [descriptor]
[ 604.960637] sr: Add. Sense: No additional sense information
[ 605.976600] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 605.976607] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 605.976621] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 605.976623] res 51/04:00:00:69:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 605.976627] ata7.00: status: { DRDY ERR }
[ 605.992584] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 605.992591] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 605.992606] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 605.992607] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 605.992612] ata7.00: status: { DRDY ERR }
[ 606.008586] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 606.008593] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 606.008604] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 606.008605] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 606.008609] ata7.00: status: { DRDY ERR }
[ 606.024594] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 606.024602] sr 6:0:0:0: CDB: Get event status notification: 4a 01
00 00 10 00 00 00 08 00
[ 606.024620] ata7.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 606.024622] res 51/04:00:00:41:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 606.024626] ata7.00: status: { DRDY ERR }
[ 606.024719] sr0: CDROM (ioctl) error, command: Get event status
notification 4a 01 00 00 10 00 00 00 08 00
[ 606.024732] sr: Sense Key : Aborted Command [current] [descriptor]
[ 606.024738] sr: Add. Sense: No additional sense information
[ 606.802020] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 606.802027] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 606.802042] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 606.802044] res 51/04:00:00:69:00/00:00:00:00:00/00 Emask
0x1 (device error)
[ 606.802048] ata7.00: status: { DRDY ERR }
[ 636.988650] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 636.988657] sr 6:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00
[ 636.988672] ata7.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 636.988674] res 40/00:00:00:69:00/00:00:00:00:00/00 Emask
0x4 (timeout)
[ 636.988678] ata7.00: status: { DRDY }
[ 637.044522] ata7: soft resetting link
[ 637.208572] ata7.01: NODEV after polling detection
[ 637.224622] ata7.00: both IDENTIFYs aborted, assuming NODEV
[ 637.224627] ata7.00: revalidation failed (errno=-2)
[ 642.200531] ata7: soft resetting link
[ 642.372669] ata7.00: both IDENTIFYs aborted, assuming NODEV
[ 642.372674] ata7.00: revalidation failed (errno=-2)
[ 647.356538] ata7: soft resetting link
[ 647.528577] ata7.00: both IDENTIFYs aborted, assuming NODEV
[ 647.528582] ata7.00: revalidation failed (errno=-2)
[ 647.528587] ata7.00: disabled


Ignoring those related to CD (sr devices), can someone please explain
to me what is happening, and what device does ata7 mapped to?

Thank you very much.

--
Regards,
Peter Teoh
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