I'm on the trial of unRaid, I've got 6 data drives and 1 parity drive, all 2TB or 1TB in size, I'm seeing about 8-19MB/sec on parity creation, currently 2 days and 10 hours to finish.

I can't seem to cancel parity to try swapping in a different 2TB drive in case it's the drive, is there any way I could sanity check this drive in unraid to eliminate that as a possibility? SMART status isn't exactly working with my 3Ware 9650SE-24M8 so even if it was having issues I'm not sure I would know.

Post your diagnostics so that the hdd gurus can check it out.

Thanks, here they are!

tower-diagnostics-20180414-1743.zip

Reading through this handy diagnostics file I see the following, maybe this is the cause of my issues, read errors on one of the data drives:

 

Apr 14 17:00:44 Tower kernel: 3w-9xxx: scsi5: ERROR: (0x03:0x0202): Drive ECC error:port=19.
Apr 14 17:00:44 Tower kernel: sd 5:0:7:0: [sdi] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Apr 14 17:00:44 Tower kernel: sd 5:0:7:0: [sdi] tag#0 Sense Key : 0x3 [current] 
Apr 14 17:00:44 Tower kernel: sd 5:0:7:0: [sdi] tag#0 ASC=0x11 ASCQ=0x0 
Apr 14 17:00:44 Tower kernel: sd 5:0:7:0: [sdi] tag#0 CDB: opcode=0x28 28 00 02 a5 5e 40 00 01 00 00
Apr 14 17:00:44 Tower kernel: print_req_error: I/O error, dev sdi, sector 44392000
Apr 14 17:00:44 Tower kernel: md: disk6 read error, sector=44391936

 

I'll remove the drive from the array and try parity again to see if any improvements.

Edited April 14, 20188 yr by Neostim

2 minutes ago, Neostim said:

I'll remove the drive from the array and try parity again to see if any improvements.

 

Maybe you know this but you will have to set a New Config to remove a drive from the array. Tools - New Config, Retain All, then unassign the disk to be removed. Don't check parity is valid, then start the array to begin parity sync.

Thanks! That helped, I've dropped the "bad" disk from the array now, parity still at 8mb/sec currently

2 hours ago, Neostim said:

Thanks! That helped, I've dropped the "bad" disk from the array now, parity still at 8mb/sec currently

 

Post new diagnostics, don't reboot.

06:00.0 RAID bus controller [0104]: 3ware Inc 9650SE SATA-II RAID PCIe [13c1:1004] (rev 01)

 

This is not a recommended controller and I'm pretty sure other users also had very poor performance with it.