Krzysztof Halasa wrote:
Paulo Cavalcanti <promac@xxxxxxxxx> writes:
Here, there is a list of the affected hardware:
https://wiki.ubuntu.com/DanielHahler/Bug59695#Affected%20hardware
I wonder if my disk does qualify?
Model Family: Hitachi Travelstar 80GN family
Device Model: IC25N020ATMR04-0
-B 128 by default (disk's default, there is no BIOS). Changed now to 255.
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 062 Pre-fail Always - 0
2 Throughput_Performance 0x0005 105 105 040 Pre-fail Offline - 5882
3 Spin_Up_Time 0x0007 192 192 033 Pre-fail Always - 1
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 859
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 118 118 040 Pre-fail Offline - 37
9 Power_On_Hours 0x0012 037 037 000 Old_age Always - 27788
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 504
191 G-Sense_Error_Rate 0x000a 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 52
193 Load_Cycle_Count 0x0012 001 001 000 Old_age Always - 5178492
194 Temperature_Celsius 0x0002 141 141 000 Old_age Always - 39 (Lifetime Min/Max 13/59)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 2
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
The disk is entirely readable (though it had 2 bad sectors, corrected by
writing to them).
The 600,000 max cycle count seems a bit underestimated, though (fingers
crossed) :-)
Usually, the reallocated sector count is the one to watch and that seems to be
fine with your disk.
SMART in general tends to be a very bad predictor of drive failures - most disks
fail without showing up (i.e., one drive head will go bad) - or it causes false
positives which end in you pulling a reasonable drive.
Sectors that clean up without reallocation after a write are not really bad,
that is pretty normal.
Failed writes are a reasonably good predictor of impending doom since almost all
drives will work really hard to retry that kind of IO (note that failed writes
as you are bouncing the drive, or due to failed cables are both exceptions).
I would not worry about this disk more than usual,
ric
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