Here is my dmesg output:
ata2.00: exception Emask 0x0 SAct 0x2 SErr 0x0 action 0x6 frozen
ata2.00: cmd 60/48:08:6f:13:3a/00:00:01:00:00/40 tag 1 ncq 36864 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata2.00: status: { DRDY }
ata2: hard resetting link
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: configured for UDMA/133
ata2: EH complete
SCSI device sdb: 490350672 512-byte hdwr sectors (251060 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: drive cache: write back
What does it mean? Can someone exactly say what is the problem for this error codes? …(timeout) – ? or it's just another error.. or it is main error in this output?
Here is smart output:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 196 196 051 Pre-fail Always - 72539
3 Spin_Up_Time 0x0027 200 200 021 Pre-fail Always - 991
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 16
5 Reallocated_Sector_Ct 0x0033 199 199 140 Pre-fail Always - 1
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 094 094 000 Old_age Always - 5010
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 15
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 8
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 7
194 Temperature_Celsius 0x0022 118 100 000 Old_age Always - 25
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
I can see only one problem – Reallocated_Event_Count. It is 1. And there is also only one error in dmesg. Is it possible that Reallocated_Event_Count and error in dmesg is connected? The disk is only 5000 hours old… Before I have had the same issues … it is Western Digital RE2 250Gb disk.
Best Answer
No, the Reallocated_Event_Count should not cause the error in dmesg. The error in dmesg indicates that communication between the drive and the host chipset locked up and the drive needed to be reset. If this only happens once, I wouldn't consider it significant. If it occurs regularly, I would begin to wonder about upgrading the firmware in the drive, or seeing if the SATA cable in use was properly connected.