I've the following WD drive (3TB) that gave me a problem (I was unable to access any file: even an ls command on it caused a never ending wait).
Here some details on the disk:
Disk /dev/sda: 2.7 TiB, 3000592982016 bytes, 5860533168 sectors
Disk model: EZRX-00D8PB0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Device Start End Sectors Size Type
/dev/sda1 2048 5860532223 5860530176 2.7T Linux filesystem
After this problem I run some test to discover what kind of problem is affecting it.
As first step I run a short test on it sudo smartctl -t short /dev/sda that shown me the following error:
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed: read failure 90% 17480 8467144
Then I tried to get some attributes as described in this other post Understanding smartctl -a output using sudo smartctl -a /dev/sda. Here you can find the attribute table and the 5 most recent error log:
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 - 71
3 Spin_Up_Time 0x0027 174 161 021 Pre-fail Always - 6266
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 695
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 077 077 000 Old_age Always - 17481
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 100 100 000 Old_age Always - 457
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 63
193 Load_Cycle_Count 0x0032 179 179 000 Old_age Always - 64193
194 Temperature_Celsius 0x0022 122 101 000 Old_age Always - 28
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 197 000 Old_age Always - 356
198 Offline_Uncorrectable 0x0030 197 197 000 Old_age Offline - 1691
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 196 196 000 Old_age Offline - 1691
SMART Error Log Version: 1
ATA Error Count: 47 (device log contains only the most recent five errors)
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 47 occurred at disk power-on lifetime: 232 hours (9 days + 16 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 61 0a 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
e0 00 0a 00 00 00 00 00 04:00:17.522 STANDBY IMMEDIATE
ef 03 46 00 00 00 a0 00 04:00:16.815 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:16.815 IDENTIFY DEVICE
Error 46 occurred at disk power-on lifetime: 232 hours (9 days + 16 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 61 46 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
ef 03 46 00 00 00 a0 00 04:00:16.815 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:16.815 IDENTIFY DEVICE
e1 00 0f 00 00 00 00 00 04:00:15.095 IDLE IMMEDIATE
ef 03 46 00 00 00 a0 00 04:00:14.575 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:14.575 IDENTIFY DEVICE
Error 45 occurred at disk power-on lifetime: 232 hours (9 days + 16 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 61 0f 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
e1 00 0f 00 00 00 00 00 04:00:15.095 IDLE IMMEDIATE
ef 03 46 00 00 00 a0 00 04:00:14.575 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:14.575 IDENTIFY DEVICE
Error 44 occurred at disk power-on lifetime: 232 hours (9 days + 16 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 61 46 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
ef 03 46 00 00 00 a0 00 04:00:14.575 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:14.575 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 00 04:00:12.170 SET FEATURES [Set transfer mode]
Error 43 occurred at disk power-on lifetime: 232 hours (9 days + 16 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 61 46 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
ef 03 46 00 00 00 a0 00 04:00:12.170 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:12.170 IDENTIFY DEVICE
e1 00 0f 00 00 00 00 00 04:00:10.445 IDLE IMMEDIATE
ef 03 46 00 00 00 a0 00 04:00:09.925 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 04:00:09.925 IDENTIFY DEVICE
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed: read failure 90% 17480 8467144
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
Then I tried to inspect on the LBA_of_first_error (8467144) and, following a part of this guide, I run sudo sg_verify --lba=8467144 /dev/sda obtaining the following output that confirms me that there is a hardware failure:
verify(10):
Fixed format, current; Sense key: Medium Error
Additional sense: Id CRC or ECC error
VERIFY(10) medium or hardware error near lba=0x8132c8
As final step I tried to reassign the block without success sudo sg_reassign --address=8467144 /dev/sda:
REASSIGN BLOCKS: Illegal request, Invalid opcode
sg_reassign failed: Illegal request, Invalid opcode
So, to summarize, did I miss some step on this disk investigation? Is my drive dead or can still be used? I am not able to understand if there are some bad error form the SMART Attribute list, can you help me understanding if the drive have further errors?
