Trunkton

Beautiful script! Thanks so much for this. I remember trying unraid once many years ago when reiserfs was the primary option. Running pre-clears was CLI only and no where near as elegant as you've made it.

If you've already added it to the array, no. It is no longer pre-cleared as unRAID has written to it. If you had not yet assigned it to the array, then it is simple to change the partitioning using the -C option in preclear_disk.sh However, it is perfectly fine as you have it. The ONLY drives with the performance issue are Western Digital EARS drives. They have firmware that works less efficiently if not aligned on a 4K boundry. No other drives have this issue. Please post the preclear report for that drive. you'll find it in /boot/preclear_reports I'll be curious to what it says. Good to know! Thanks so much for your help Joe. Attached below is the report. Drive was freshly unboxed/installed and not attached to anything else prior. Its condition should be A1. ========================================================================1.13 == invoked as: ./preclear_disk.sh /dev/sdb == ST2000DL003-9VT166 5YD1VH8Y == Disk /dev/sdb has been successfully precleared == with a starting sector of 63 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 5:58:20 (93 MB/s) == Last Cycle's Zeroing time : 7:12:26 (77 MB/s) == Last Cycle's Post Read Time : 12:11:59 (45 MB/s) == Last Cycle's Total Time : 25:23:48 == == Total Elapsed Time 25:23:48 == == Disk Start Temperature: 23C == == Current Disk Temperature: 26C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sdb /tmp/smart_finish_sdb ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Raw_Read_Error_Rate = 116 100 6 ok 116989000 Seek_Error_Rate = 60 100 30 ok 1252314 Spin_Retry_Count = 100 100 97 near_thresh 0 End-to-End_Error = 100 100 99 near_thresh 0 Airflow_Temperature_Cel = 74 77 45 ok 26 Temperature_Celsius = 26 23 0 ok 26 Hardware_ECC_Recovered = 36 100 0 ok 116989000 No SMART attributes are FAILING_NOW 0 sectors were pending re-allocation before the start of the preclear. 0 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 0 sectors are pending re-allocation at the end of the preclear, the number of sectors pending re-allocation did not change. 0 sectors had been re-allocated before the start of the preclear. 0 sectors are re-allocated at the end of the preclear, the number of sectors re-allocated did not change. ============================================================================

Trying to confirm the HDD partition is correct. OS: 5.0-beta12a Ran latest "preclear_disk.sh /dev/sdb" thinking the value in Settings > Disk Settings > "Default partition format" would be considered automatically. 26 hours later and added into the new array with no data yet added... Next time I will be using "-A" switch to ensure the MBR is set correctly but is there anyway to fix this without doing the whole 26 hour operation again? Examined the the Seagate Barracuda "ST2000DL003": root@Tower:/boot# fdisk -lu /dev/sdb Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 1 heads, 63 sectors/track, 62016336 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 63 3907029167 1953514552+ 83 Linux Partition 1 does not end on cylinder boundary.