raid1 messaggi di errore

[beppe <gitrec@tin.it>]

cat /proc/mdstat

Personalities : [raid1]
md0 : active raid1 sdb1[0] sdc1[1]
      488253440 blocks super 1.2 [2/2] [UU]
      bitmap: 2/4 pages [8KB], 65536KB chunk

tail -20 /var/log/kern.log

 ata4.00: status: { DRDY ERR }
 ata4.00: error: { UNC }
 ata4.00: configured for UDMA/133
 ata4.01: configured for UDMA/133
 sd 3:0:0:0: [sdb] Unhandled sense code
 sd 3:0:0:0: [sdb]
 Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
 sd 3:0:0:0: [sdb]
 Sense Key : Medium Error [current] [descriptor]
 Descriptor sense data with sense descriptors (in hex):
         72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
17 52 c7 37
 sd 3:0:0:0: [sdb]
 Add. Sense: Unrecovered read error - auto reallocate failed
 sd 3:0:0:0: [sdb] CDB:
 Read(10): 28 00 17 52 c7 37 00 00 08 00
 end_request: I/O error, dev sdb, sector 391300919
 ata4: EH complete
 md/raid1:md0: read error corrected (8 sectors at 391298871 on sdb1)
 md/raid1:md0: redirecting sector 391036671 to other mirror: sdb1

ls -l /dev/disk/by-id/

ata-WDC_WD5000AAKS-00A7B0_WD-WMASY7404637 -> ../../sdc
ata-WDC_WD5000AAKS-00A7B0_WD-WMASY7404637-part1 -> ../../sdc1

ata-WDC_WD5000AAKS-00A7B2_WD-WCASY3463424 -> ../../sdb
ata-WDC_WD5000AAKS-00A7B2_WD-WCASY3463424-part1 -> ../../sdb1


intanto sta facendo il backup su un altro disco,
spero vada a buon fine, perche' si ferma con alcuni files
generando gli errori che ho riportato, poi controllo.

il disco che non va bene penso sia sdb.

Non so se provare a farlo ricostruire, ma opterei per cambiarlo.

Qualche consiglio?
Grazie.

Beppe

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