Administrace komentářů

Souhlas. Scrub (tak jak mám informace) kontroluje pouze jestli data z disku jsou v pořádku, tedy jak byly zapsány a odpovídá jim kontrolní součet.

Příklad. Teď k 1.9. se o půlnoci spustil pravidelný scrub a toto je dnešní první chybová hláška

[265079.706162] BTRFS warning (device dm-7): checksum error at logical 26544592297984 on dev /dev/mapper/miraza, physical 230671491072, root 5, inode 5670856, offset 189988864, length 4096, links 1 (path: hudba/pracovni/Beethoven_Piano Concertos - Maurizio Pollini, Claudio Abbado & BPO [2021 Esoteric]/No.1 & 2/04 - 1. Allegro con brio [Piano Concerto No.2 in B flat major, O.dsf)

Je to na RAID1 takže bez problémů byla korekce. /dev/mapper/miraza je LUKS šifrovaný disk zaraženy do RAID 1 poolu. Co skutečně se stalo na fyzickém disku, když po dešifrování předalo do filesystému checksum chybu nemám chuť zkoumat. Ten fyzický disk se pro mne tím pádem posouvá do kategorie "na výměnu". (On na to již má nárok. Je to totiž tento disk.)

smartctl -a /dev/sde
smartctl 7.3 2022-02-28 r5338 [x86_64-linux-5.19.4-zen1-1-zen] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     SAMSUNG SpinPoint F2 EG
Device Model:     SAMSUNG HD154UI
Serial Number:    S1Y6J1LS806866
LU WWN Device Id: 5 0024e9 001feff7a
Firmware Version: 1AG01118
User Capacity:    1 500 301 910 016 bytes [1,50 TB]
Sector Size:      512 bytes logical/physical
Device is:        In smartctl database 7.3/5319
ATA Version is:   ATA/ATAPI-7, ATA8-ACS T13/1699-D revision 3b
Local Time is:    Thu Sep  1 13:21:31 2022 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

General SMART Values:
Offline data collection status:  (0x00) Offline data collection activity
                                        was never started.
                                        Auto Offline Data Collection: Disabled.
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:                (19143) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        ( 320) minutes.
Conveyance self-test routine
recommended polling time:        (  33) minutes.
SCT capabilities:              (0x003f) SCT Status supported.
                                        SCT Error Recovery Control supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

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     0x000f   100   099   051    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0007   071   071   011    Pre-fail  Always       -       9430
  4 Start_Stop_Count        0x0032   098   098   000    Old_age   Always       -       1841
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   100   100   051    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0025   100   091   015    Pre-fail  Offline      -       11670
  9 Power_On_Hours          0x0032   086   086   000    Old_age   Always       -       73068
 10 Spin_Retry_Count        0x0033   100   100   051    Pre-fail  Always       -       0
 11 Calibration_Retry_Count 0x0012   100   100   000    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   098   098   000    Old_age   Always       -       1537
 13 Read_Soft_Error_Rate    0x000e   100   099   000    Old_age   Always       -       0
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   001   001   000    Pre-fail  Always       -       300
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       4
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   068   033   000    Old_age   Always       -       32 (Min/Max 15/35)
194 Temperature_Celsius     0x0022   068   032   000    Old_age   Always       -       32 (135 207 36 15 0)
195 Hardware_ECC_Recovered  0x001a   100   100   000    Old_age   Always       -       928398662
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       1141
200 Multi_Zone_Error_Rate   0x000a   100   099   000    Old_age   Always       -       1
201 Soft_Read_Error_Rate    0x000a   100   100   000    Old_age   Always       -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      6291         -
# 2  Extended offline    Completed without error       00%      2239         -
# 3  Extended offline    Completed without error       00%     61821         -
# 4  Extended offline    Completed without error       00%     61101         -
# 5  Extended offline    Completed without error       00%     60709         -
# 6  Extended offline    Completed without error       00%     53925         -
# 7  Offline             Completed without error       00%     52465         -

S nájezdem přes 73 000 hodin patří k mým nejstarším. Je zajímavé, že testy ani nepočítaly s tak vysokám nájezdem a přetočilo se jim 16 bitové numero. Poděkuji mu za dlouholeté věrné služby a vyměním ho v poli za novější disk. Vzhledem k flexibilitě souborového btrfs RAID1. tak třeba za něco takového jako Toshiba od Mironetu.