Hi, >> Can you point me to instructions on the best way to replace a disk? > > First run "repair" on the array, hopefully it'll notice the unreadable > blocks and re-write them. > > echo repair >> /sys/block/md0/md/sync_action > > Also make sure your OS does regular scrubs of the raid, usually this is done > by monthly runs of checkarray, this is an example from Ubuntu: Great, thanks. I recalled something like that, but couldn't remember exactly. The system passed the above rebuild test on both arrays, but I'm obviously still concerned about the disk. Here are the relevant smartctl lines: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 108 089 006 Pre-fail Always - 0 3 Spin_Up_Time 0x0003 094 094 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 29 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 083 060 030 Pre-fail Always - 209739855 9 Power_On_Hours 0x0032 074 074 000 Old_age Always - 22816 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 37 187 Reported_Uncorrect 0x0032 095 095 000 Old_age Always - 5 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 075 064 045 Old_age Always - 25 (Min/Max 23/32) 194 Temperature_Celsius 0x0022 025 040 000 Old_age Always - 25 (0 18 0 0) 195 Hardware_ECC_Recovered 0x001a 057 045 000 Old_age Always - 51009302 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 2 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 2 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age Offline - 0 202 Data_Address_Mark_Errs 0x0032 100 253 000 Old_age Always - 0 Pending_sector and uncorrectable are both greater than zero. Is this drive on its way to failure? Can someone point me to the proper mdadm commands to set the drive faulty then rebuild it after installing the new one? Thanks again, Alex -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
