Error en disco ? sectores dañados ?

[Gustavo Maher]

Hola Lista,

Les consulto por el siguiente error que me muestra el log cuando inicia
el sistema.
Les comento que no he tenido problemas ni de cuelgues ni información que
desaparece o es inaccesible.
Por lo que me parece raro que sea un sector defectuoso del disco.
En fin, les pego el mensaje del log, si alguien me sabe explicar desde
ya muchas gracias.

Jun  1 07:40:37 tavitux kernel: [  909.694353] ata3.00: exception Emask
0x0 SAct 0x0 SErr 0x0 action 0x0
Jun  1 07:40:37 tavitux kernel: [  909.694362] ata3.00: BMDMA stat 0x25
Jun  1 07:40:37 tavitux kernel: [  909.694370] ata3.00: failed command:
READ DMA EXT
Jun  1 07:40:37 tavitux kernel: [  909.694386] ata3.00: cmd
25/00:00:bc:5f:03/00:01:33:00:00/e0 tag 0 dma 131072 in
Jun  1 07:40:37 tavitux kernel: [  909.694389]          res
51/40:8f:24:60:03/40:00:33:00:00/e0 Emask 0x9 (media error)
Jun  1 07:40:37 tavitux kernel: [  909.694397] ata3.00: status: { DRDY
ERR }
Jun  1 07:40:37 tavitux kernel: [  909.694402] ata3.00: error: { UNC }
Jun  1 07:40:37 tavitux kernel: [  909.731288] ata3.00: configured for
UDMA/133
Jun  1 07:40:37 tavitux kernel: [  909.731367] sd 2:0:0:0: [sda]
Unhandled sense code
Jun  1 07:40:37 tavitux kernel: [  909.731373] sd 2:0:0:0: [sda]
Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jun  1 07:40:37 tavitux kernel: [  909.731382] sd 2:0:0:0: [sda]  Sense
Key : Medium Error [current] [descriptor]
Jun  1 07:40:37 tavitux kernel: [  909.731392] Descriptor sense data
with sense descriptors (in hex):
Jun  1 07:40:37 tavitux kernel: [  909.731397]         72 03 11 04 00 00
00 0c 00 0a 80 00 00 00 00 00 
Jun  1 07:40:37 tavitux kernel: [  909.731415]         33 03 60 24 
Jun  1 07:40:37 tavitux kernel: [  909.731423] sd 2:0:0:0: [sda]  Add.
Sense: Unrecovered read error - auto reallocate failed
Jun  1 07:40:37 tavitux kernel: [  909.731434] sd 2:0:0:0: [sda] CDB:
Read(10): 28 00 33 03 5f bc 00 01 00 00
Jun  1 07:40:37 tavitux kernel: [  909.731451] end_request: I/O error,
dev sda, sector 855859236
Jun  1 07:40:37 tavitux kernel: [  909.731493] ata3: EH complete
Jun  1 07:40:39 tavitux kernel: [  911.669371] ata3.00: exception Emask
0x0 SAct 0x0 SErr 0x0 action 0x0
Jun  1 07:40:39 tavitux kernel: [  911.669381] ata3.00: BMDMA stat 0x25
Jun  1 07:40:39 tavitux kernel: [  911.669389] ata3.00: failed command:
READ DMA EXT
Jun  1 07:40:39 tavitux kernel: [  911.669405] ata3.00: cmd
25/00:98:24:60:03/00:00:33:00:00/e0 tag 0 dma 77824 in
Jun  1 07:40:39 tavitux kernel: [  911.669408]          res
51/40:87:24:60:03/40:00:33:00:00/e0 Emask 0x9 (media error)
Jun  1 07:40:39 tavitux kernel: [  911.669415] ata3.00: status: { DRDY
ERR }
Jun  1 07:40:39 tavitux kernel: [  911.669421] ata3.00: error: { UNC }
Jun  1 07:40:39 tavitux kernel: [  911.701260] ata3.00: configured for
UDMA/133
Jun  1 07:40:39 tavitux kernel: [  911.701289] ata3: EH complete
Jun  1 07:40:41 tavitux kernel: [  913.527201] ata3.00: exception Emask
0x0 SAct 0x0 SErr 0x0 action 0x0
Jun  1 07:40:41 tavitux kernel: [  913.527205] ata3.00: BMDMA stat 0x25
Jun  1 07:40:41 tavitux kernel: [  913.527208] ata3.00: failed command:
READ DMA EXT
Jun  1 07:40:41 tavitux kernel: [  913.527213] ata3.00: cmd
25/00:98:24:60:03/00:00:33:00:00/e0 tag 0 dma 77824 in
Jun  1 07:40:41 tavitux kernel: [  913.527214]          res
51/40:87:24:60:03/40:00:33:00:00/e0 Emask 0x9 (media error)
Jun  1 07:40:41 tavitux kernel: [  913.527216] ata3.00: status: { DRDY
ERR }
Jun  1 07:40:41 tavitux kernel: [  913.527217] ata3.00: error: { UNC }
Jun  1 07:40:41 tavitux kernel: [  913.561115] ata3.00: configured for
UDMA/133
Jun  1 07:40:41 tavitux kernel: [  913.561143] ata3: EH complete
Jun  1 07:40:52 tavitux kernel: [  924.177875] ata3.00: exception Emask
0x0 SAct 0x0 SErr 0x0 action 0x0
Jun  1 07:40:52 tavitux kernel: [  924.177885] ata3.00: BMDMA stat 0x25
Jun  1 07:40:52 tavitux kernel: [  924.177894] ata3.00: failed command:
READ DMA EXT
Jun  1 07:40:52 tavitux kernel: [  924.177909] ata3.00: cmd
25/00:00:bc:60:03/00:01:33:00:00/e0 tag 0 dma 131072 in
Jun  1 07:40:52 tavitux kernel: [  924.177913]          res
51/40:cf:e6:60:03/40:00:33:00:00/e0 Emask 0x9 (media error)
Jun  1 07:40:52 tavitux kernel: [  924.177920] ata3.00: status: { DRDY
ERR }
Jun  1 07:40:52 tavitux kernel: [  924.177925] ata3.00: error: { UNC }
Jun  1 07:40:52 tavitux kernel: [  924.210791] ata3.00: configured for
UDMA/133
Jun  1 07:40:52 tavitux kernel: [  924.210849] sd 2:0:0:0: [sda]
Unhandled sense code
Jun  1 07:40:52 tavitux kernel: [  924.210855] sd 2:0:0:0: [sda]
Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jun  1 07:40:52 tavitux kernel: [  924.210863] sd 2:0:0:0: [sda]  Sense
Key : Medium Error [current] [descriptor]
Jun  1 07:40:52 tavitux kernel: [  924.210873] Descriptor sense data
with sense descriptors (in hex):
Jun  1 07:40:52 tavitux kernel: [  924.210878]         72 03 11 04 00 00
00 0c 00 0a 80 00 00 00 00 00 
Jun  1 07:40:52 tavitux kernel: [  924.210896]         33 03 60 e6 
Jun  1 07:40:52 tavitux kernel: [  924.210904] sd 2:0:0:0: [sda]  Add.
Sense: Unrecovered read error - auto reallocate failed
Jun  1 07:40:52 tavitux kernel: [  924.210914] sd 2:0:0:0: [sda] CDB:
Read(10): 28 00 33 03 60 bc 00 01 00 00
Jun  1 07:40:52 tavitux kernel: [  924.210932] end_request: I/O error,
dev sda, sector 855859430
Jun  1 07:40:52 tavitux kernel: [  924.210983] ata3: EH complete
Jun  1 07:41:03 tavitux kernel: [  935.254970] ata3.00: exception Emask
0x0 SAct 0x0 SErr 0x0 action 0x0
Jun  1 07:41:03 tavitux kernel: [  935.254979] ata3.00: BMDMA stat 0x25
Jun  1 07:41:03 tavitux kernel: [  935.254987] ata3.00: failed command:
READ DMA EXT
Jun  1 07:41:03 tavitux kernel: [  935.255003] ata3.00: cmd
25/00:00:bc:61:03/00:01:33:00:00/e0 tag 0 dma 131072 in
Jun  1 07:41:03 tavitux kernel: [  935.255006]          res
51/40:3f:77:62:03/40:00:33:00:00/e0 Emask 0x9 (media error)
Jun  1 07:41:03 tavitux kernel: [  935.255013] ata3.00: status: { DRDY
ERR }
Jun  1 07:41:03 tavitux kernel: [  935.255018] ata3.00: error: { UNC }
Jun  1 07:41:03 tavitux kernel: [  935.290898] ata3.00: configured for
UDMA/133
Jun  1 07:41:03 tavitux kernel: [  935.290968] sd 2:0:0:0: [sda]
Unhandled sense code
Jun  1 07:41:03 tavitux kernel: [  935.290974] sd 2:0:0:0: [sda]
Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jun  1 07:41:03 tavitux kernel: [  935.290982] sd 2:0:0:0: [sda]  Sense
Key : Medium Error [current] [descriptor]
Jun  1 07:41:03 tavitux kernel: [  935.290992] Descriptor sense data
with sense descriptors (in hex):
Jun  1 07:41:03 tavitux kernel: [  935.290997]         72 03 11 04 00 00
00 0c 00 0a 80 00 00 00 00 00 
Jun  1 07:41:03 tavitux kernel: [  935.291015]         33 03 62 77 
Jun  1 07:41:03 tavitux kernel: [  935.291023] sd 2:0:0:0: [sda]  Add.
Sense: Unrecovered read error - auto reallocate failed
Jun  1 07:41:03 tavitux kernel: [  935.291034] sd 2:0:0:0: [sda] CDB:
Read(10): 28 00 33 03 61 bc 00 01 00 00
Jun  1 07:41:03 tavitux kernel: [  935.291051] end_request: I/O error,
dev sda, sector 855859831
Jun  1 07:41:03 tavitux kernel: [  935.291084] ata3: EH complete