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Parity check running very slow (kb/s)

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 I am still somewhat new to Unraid I have just added 3 new disks to my array, and it is running the Parity check but is running at maximum 400kb/s and is saying it will take over 200 days to complete. I have 2 10tb drives for parity and 11 drives total in the array (4x 8thh and 7X10tb) 

 

I stopped all dockers and it did not change the speed. I tried stopping and restarting the parity check and still did not improve the speed. 

 

Thank you for your help 😀 

harrypotter2-diagnostics-20220123-1000.zip

Solved by Squid

  • Solution

You've got to reseat the cabling to both ST10000VN0004-1ZD101  ZA29CF7E (disk 10),  and ST10000VN0004-1ZD101   ZA2AJ2XJ (disk 11)

 

Sata is finicky at times and it doesn't take much for continual resets to happen on a slightly misaligned cable (or a bad cable)

  • Author

nevermind, it just needed a min and now its running at 100mb/s

 

  • Author
On 1/23/2022 at 12:09 PM, Squid said:

You've got to reseat the cabling to both ST10000VN0004-1ZD101  ZA29CF7E (disk 10),  and ST10000VN0004-1ZD101   ZA2AJ2XJ (disk 11)

 

Sata is finicky at times and it doesn't take much for continual resets to happen on a slightly misaligned cable (or a bad cable)

 

21 hours ago, Ibis said:

nevermind, it just needed a min and now its running at 100mb/s

 

Sorry to be a pain it is fluctuating a lot as low as 1mb/s but up to 100mb/s I have tried looking at the logs myself but don’t know what I am looking for. 

I restarted the sync about 21 hours  45 mins ago and has done 8%

 

harrypotter2-diagnostics-20220124-1318.zip

  • Community Expert

According to your syslog it look like a couple of disks had connection problems, and then disk11 dropped offline, and later reconnected with a different device ID so it now showing up under Unassigned Devices (Unraid cannot is not hot-plug aware for array devices and cannot handle this so it thinks it has failed).

 

As was mentioned previously you need to carefully check the cabling (both power and SATA) to make sure all cables are properly seated.   Also are you sure your power supply is up to handling all the drives you now have connected?

  • 2 weeks later...
  • Author

I would appreciate if someone could have another look for me. I have replaced all SATA Cables and am still only getting 500kb/s speeds for parity sync. I'm worried I will have a drive fail before the parity has has been built. 

 

Thank you for your help.

harrypotter2-diagnostics-20220203-1133.zip

Edited by Ibis

  • Community Expert
Feb  3 11:22:12 HarryPotter2 kernel: ata2.00: status: { DRDY }
Feb  3 11:22:12 HarryPotter2 kernel: ata2: hard resetting link
Feb  3 11:22:13 HarryPotter2 kernel: ata2: SATA link down (SStatus 0 SControl 300)
Feb  3 11:22:13 HarryPotter2 kernel: ata2: hard resetting link
Feb  3 11:22:22 HarryPotter2 kernel: ata1: softreset failed (1st FIS failed)
Feb  3 11:22:22 HarryPotter2 kernel: ata1: hard resetting link
Feb  3 11:22:23 HarryPotter2 kernel: ata2: softreset failed (1st FIS failed)
Feb  3 11:22:23 HarryPotter2 kernel: ata2: hard resetting link
Feb  3 11:22:24 HarryPotter2 kernel: ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Feb  3 11:22:24 HarryPotter2 kernel: ata2.00: configured for UDMA/133
Feb  3 11:22:24 HarryPotter2 kernel: ata2: EH complete

...

Feb  3 11:25:26 HarryPotter2 kernel: ata1: SATA link down (SStatus 0 SControl 310)
Feb  3 11:25:26 HarryPotter2 kernel: ata1: hard resetting link
Feb  3 11:25:36 HarryPotter2 kernel: ata1: softreset failed (1st FIS failed)
Feb  3 11:25:36 HarryPotter2 kernel: ata1: hard resetting link
Feb  3 11:25:37 HarryPotter2 kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Feb  3 11:25:37 HarryPotter2 kernel: ata1.00: configured for UDMA/33
Feb  3 11:25:37 HarryPotter2 kernel: ata1: EH complete
Feb  3 11:27:53 HarryPotter2 kernel: ata43.00: exception Emask 0x10 SAct 0x0 SErr 0x4010000 action 0xe frozen
Feb  3 11:27:53 HarryPotter2 kernel: ata43.00: irq_stat 0x80400040, connection status changed
Feb  3 11:27:53 HarryPotter2 kernel: ata43: SError: { PHYRdyChg DevExch }
Feb  3 11:27:53 HarryPotter2 kernel: ata43.00: failed command: READ DMA EXT
Feb  3 11:27:53 HarryPotter2 kernel: ata43.00: cmd 25/00:40:08:c5:55/00:05:00:00:00/e0 tag 23 dma 688128 in
Feb  3 11:27:53 HarryPotter2 kernel:         res 50/00:00:07:c5:55/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
Feb  3 11:27:53 HarryPotter2 kernel: ata43.00: status: { DRDY }
Feb  3 11:27:53 HarryPotter2 kernel: ata43: hard resetting link
Feb  3 11:27:58 HarryPotter2 kernel: ata43: link is slow to respond, please be patient (ready=0)
Feb  3 11:28:03 HarryPotter2 kernel: ata43: COMRESET failed (errno=-16)
Feb  3 11:28:03 HarryPotter2 kernel: ata43: hard resetting link
Feb  3 11:28:07 HarryPotter2 kernel: ata43: SATA link up 6.0 Gbps (SStatus 133 SControl 310)
Feb  3 11:28:08 HarryPotter2 kernel: ata43.00: configured for UDMA/33
Feb  3 11:28:08 HarryPotter2 kernel: ata43: EH complete

 

Constant errors in multiple disks, this is usually a power/connection problem.

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