February 19, 20179 yr Hi all. Some funky stuff happened last night and my disk 8 reported 4 errors. I noticed it was unmountable. I am not sure I went about things in the correct order but it's now rebuilding but the FS is unmountable. It should be XFS. Is this normal?
February 19, 20179 yr Rebuilding an unmountable disk just rebuilds a disk that's unmountable! You need to start the array in Maintenance mode and run a file system check on it. EDIT: You'll have to wait until tomorrow when it has finished rebuilding.
February 19, 20179 yr Rebuilding only does goed when a disk has physically died.. As long as unraid is doing what it is made for it will continuously update parity to reflect the status of all the drives, so if you get some kind of massive file system corruption then parity will be updated to make sure that corruption can be 100% replicated when you do a rebuild..
February 19, 20179 yr Author I stopped the rebuild. repaired xfs and started the rebuild. does it look normal now?
February 19, 20179 yr Community Expert Your problem is fixed for now, but it was almost certainly caused by these disk errors: Device Model: ST8000AS0002-1NA17Z Serial Number: Z840C17N ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 105 099 006 Pre-fail Always - 7414448 3 Spin_Up_Time 0x0003 091 091 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 10 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 077 060 030 Pre-fail Always - 57660596 9 Power_On_Hours 0x0032 097 097 000 Old_age Always - 3071 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 9 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 096 096 000 Old_age Always - 4 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 072 064 045 Old_age Always - 28 (Min/Max 25/28) 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 097 097 000 Old_age Always - 6468 193 Load_Cycle_Count 0x0032 094 094 000 Old_age Always - 13278 194 Temperature_Celsius 0x0022 028 040 000 Old_age Always - 28 (0 9 0 0 0) 195 Hardware_ECC_Recovered 0x001a 105 099 000 Old_age Always - 7414448 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 - 1662 (217 191 0) 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 28688252041 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 154966124013 Error 4 occurred at disk power-on lifetime: 3066 hours (127 days + 18 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 -- -- -- -- -- -- -- 40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455 LBA = 0x0fffffff doesn't looks like a valid sector and since there are no pending sectors it's probably not bad sectors, but it's a disk issue, I would give it a second chance but not a third, if errors re-occur I would consider replacing it.
February 19, 20179 yr Author Agreed. I have a new archive disk on the way. When it arrives I will pre-clear it. If it clears, I will replace this disk 8 and send it out for replacement since its still under warranty. Your problem is fixed for now, but it was almost certainly caused by these disk errors: Device Model: ST8000AS0002-1NA17Z Serial Number: Z840C17N ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 105 099 006 Pre-fail Always - 7414448 3 Spin_Up_Time 0x0003 091 091 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 10 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 077 060 030 Pre-fail Always - 57660596 9 Power_On_Hours 0x0032 097 097 000 Old_age Always - 3071 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 9 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 096 096 000 Old_age Always - 4 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 072 064 045 Old_age Always - 28 (Min/Max 25/28) 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 097 097 000 Old_age Always - 6468 193 Load_Cycle_Count 0x0032 094 094 000 Old_age Always - 13278 194 Temperature_Celsius 0x0022 028 040 000 Old_age Always - 28 (0 9 0 0 0) 195 Hardware_ECC_Recovered 0x001a 105 099 000 Old_age Always - 7414448 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 - 1662 (217 191 0) 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 28688252041 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 154966124013 Error 4 occurred at disk power-on lifetime: 3066 hours (127 days + 18 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 -- -- -- -- -- -- -- 40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455 LBA = 0x0fffffff doesn't looks like a valid sector and since there are no pending sectors it's probably not bad sectors, but it's a disk issue, I would give it a second chance but not a third, if errors re-occur I would consider replacing it.
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