News - Informatique

Allo Houston, on a un problème de disque dur

Informatique | 3 Commentaires
Après le disque dur Hitachi, c'est au tour d'un disque dur Seagate qui est en train de mourir à mon travail.

Le problème a été décelé par un collègue qui a retrouvé la machine plantée. Il a fait moult tentatives de reboot jusqu’à ce que le système reparte. Après mon arrivée : le disque dur fonctionne, pas d'erreur E/S dans les logs système mais il est affreusement lent (visible avec la commande iostat). Un smartctl confirme le verdict de mon collègue : le disque semble bien malade.

Code BASH :
 
[root@xxxxxxxx log]# smartctl -d ata --all /dev/sda
smartctl version 5.36 [i686-redhat-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model:     ST3160318AS
Serial Number:    9VM8T5G2
Firmware Version: CC44
User Capacity:    160,041,885,696 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Not recognized. Minor revision code: 0x29
Local Time is:    Fri May  5 14:02:29 2017 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
See vendor-specific Attribute list for marginal Attributes.
General SMART Values:
Offline data collection status:  (0x82)    Offline data collection activity
                    was completed without error.
                    Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0)    The previous self-test routine completed
                    without error or no self-test has ever 
                    been run.
Total time to complete Offline 
data collection:          ( 617) seconds.
Offline data collection
capabilities:              (0x7b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    Offline surface scan supported.
                    Self-test supported.
                    Conveyance Self-test supported.
                    Selective Self-test supported.
SMART capabilities:            (0x0003)    Saves SMART data before entering
                    power-saving mode.
                    Supports SMART auto save timer.
Error logging capability:        (0x01)    Error logging supported.
                    General Purpose Logging supported.
Short self-test routine 
recommended polling time:      (   1) minutes.
Extended self-test routine
recommended polling time:      (  36) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   097   083   006    Pre-fail  Always       -       99879703
  3 Spin_Up_Time            0x0003   097   097   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       70
  5 Reallocated_Sector_Ct   0x0033   002   002   036    Pre-fail  Always   FAILING_NOW 4045
  7 Seek_Error_Rate         0x000f   080   060   030    Pre-fail  Always       -       102690074
  9 Power_On_Hours          0x0032   045   045   000    Old_age   Always       -       48598
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       70
183 Unknown_Attribute       0x0000   100   100   000    Old_age   Offline      -       0
184 Unknown_Attribute       0x0032   100   100   099    Old_age   Always       -       0
187 Unknown_Attribute       0x0032   099   099   000    Old_age   Always       -       1
188 Unknown_Attribute       0x0032   100   090   000    Old_age   Always       -       68720525352
189 Unknown_Attribute       0x003a   100   100   000    Old_age   Always       -       0
190 Unknown_Attribute       0x0022   060   050   045    Old_age   Always       -       673382440
194 Temperature_Celsius     0x0022   040   050   000    Old_age   Always       -       40 (Lifetime Min/Max 0/15)
195 Hardware_ECC_Recovered  0x001a   044   038   000    Old_age   Always       -       99879703
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       238950505561757
241 Unknown_Attribute       0x0000   100   253   000    Old_age   Offline      -       2640060481
242 Unknown_Attribute       0x0000   100   253   000    Old_age   Offline      -       1786415469
SMART Error Log Version: 1
ATA Error Count: 4
    CR = Command Register [HEX]
    FR = Features Register [HEX]
    SC = Sector Count Register [HEX]
    SN = Sector Number Register [HEX]
    CL = Cylinder Low Register [HEX]
    CH = Cylinder High Register [HEX]
    DH = Device/Head Register [HEX]
    DC = Device Command Register [HEX]
    ER = Error register [HEX]
    ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 4 occurred at disk power-on lifetime: 48574 hours (2023 days + 22 hours)
  When the command that caused the error occurred, the device was active or idle.
  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  04 71 04 9d 00 32 e0
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  ec 00 00 00 00 00 a0 00  34d+12:23:30.820  IDENTIFY DEVICE
  00 00 00 00 00 00 00 ff  34d+12:23:30.518  NOP [Abort queued commands]
  00 00 00 00 00 00 00 ff  34d+12:22:55.204  NOP [Abort queued commands]
  ec 00 00 00 00 00 a0 00  34d+12:22:50.199  IDENTIFY DEVICE
  00 00 00 00 00 00 00 ff  34d+12:22:49.897  NOP [Abort queued commands]
Error 3 occurred at disk power-on lifetime: 48574 hours (2023 days + 22 hours)
  When the command that caused the error occurred, the device was active or idle.
  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  04 71 04 9d 00 32 e0
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  ec 00 00 00 00 00 a0 00  34d+12:22:50.199  IDENTIFY DEVICE
  00 00 00 00 00 00 00 ff  34d+12:22:49.897  NOP [Abort queued commands]
  00 00 00 00 00 00 00 ff  34d+12:22:14.543  NOP [Abort queued commands]
  ec 00 00 00 00 00 a0 00  34d+12:22:09.538  IDENTIFY DEVICE
  00 00 00 00 00 00 00 ff  34d+12:22:09.235  NOP [Abort queued commands]
Error 2 occurred at disk power-on lifetime: 48574 hours (2023 days + 22 hours)
  When the command that caused the error occurred, the device was active or idle.
  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  04 71 04 9d 00 32 e0
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  ec 00 00 00 00 00 a0 00  34d+12:22:09.538  IDENTIFY DEVICE
  00 00 00 00 00 00 00 ff  34d+12:22:09.235  NOP [Abort queued commands]
  00 00 00 00 00 00 00 ff  34d+12:21:33.883  NOP [Abort queued commands]
  60 00 00 c0 f5 95 40 00  34d+12:20:52.495  [RESERVED FOR SERIAL ATA]
  61 00 c0 08 85 73 46 00  34d+12:20:52.494  [RESERVED FOR SERIAL ATA]
Error 1 occurred at disk power-on lifetime: 48574 hours (2023 days + 22 hours)
...


Évidemment il s'agit d'une machine desktop (Acer Veriton M4) qui n'a qu'un seul disque donc pas de RAID. Prise de décision de tout stopper les services et de copier le disque en urgence. Il héberge une base Oracle d'ouillage et non métier, donc pas vraiment indispensable et restaurable par ailleurs. Un boot via une distrib Live Linux (PING) sur CD pour faire un dd donne un max d'erreurs et des transferts à 9Mo/s ce qui est un débit largement anormal pour une copie entre 2 disques SATA internes. En fait dd s'attarde sur les timeout de secteurs défecteux de plusieurs secondes à chaque fois et fait plusieurs tentatives. J'aurais du faire un fsck/badblocks avant.



Généralement lorsque l'on rencontre ce genre de message ce n'est clairement pas bon signe... Comme cette semaine je suis en congés, d'autres personnes vont s'occuper le lui et je ne pourrais avoir la suite de l'histoire que dans quelques jours.

MAJ le 15/05

La copie dd avec l'option "conv=noerror" est arrivée à son terme durant le long week-end, avec une moyenne de 56Mo/s (plus vite que prévu). L'opération a donc réussi. Ci-dessous les valeurs de la commande smartctl (sortie tronquée) du nouveau disque pour comparaison.

Code BASH :
 
[root@xxxxxxxx ~]# smartctl --all -d ata /dev/sda
smartctl version 5.36 [i686-redhat-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model:     WDC WD3200AAJS-22B4A0
User Capacity:    320,072,933,376 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Mon May 15 10:33:30 2017 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       -       15616
  3 Spin_Up_Time            0x0027   153   153   021    Pre-fail  Always       -       3333
  4 Start_Stop_Count        0x0032   099   099   000    Old_age   Always       -       1218
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   074   074   000    Old_age   Always       -       19272
 10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   000    Old_age   Always       -       1217
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       47
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1218
194 Temperature_Celsius     0x0022   106   087   000    Old_age   Always       -       37
196 Reallocated_Event_Count 0x0032   199   199   000    Old_age   Always       -       1
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1