October 10, 20205 yr Setting up a new server and its telling me a parity drive sync is going to take over a week to complete when I have less 300GB on the entire array. I have looked at my logs and I suspected it might be a failing hard drive in slot 5 and I replaced it. Still getting low write speeds after replacing the drive. I have attached my diag to this posting. Can someone take a look and tell me what im missing? lb-unsevern-diagnostics-20201009-2216.zip
October 10, 20205 yr Community Expert The time to do the parity sync is not affected by the amount of data on the drives - but just by the drive sizes. The parity process is not aware of the ‘data’ as it works purely at the raw sector level. having said that it definitely sounds like it is going to take far too long. The syslog says you are getting continual resets on disk5 which could explain the speed. I would suggest you need to carefully check the power and SATA cabling to the drive.
October 10, 20205 yr Community Expert Onboard SATA is set to IDE, change it to AHCI. Also, the LSI firmware needs to be updated: mpt2sas_cm0: LSISAS2008: FWVersion(20.00.04.00) All p20 releases before 20.00.07.00 have known issues. If still slow after please post new diags.
October 10, 20205 yr Author Thank you both for your help. Have taken the following steps... Removed the LSI Card and connected the drive directly to the motherboard Changed Sata to AHCI as suggested Replaced the drive 5 with a new drive. At one point I was getting really high write speeds but only when I completely removed drive 5 hard drive and do not replace it. I then replaced it with a new drive giving me 13 drives including my cache drive. Then the speeds started to slow again. Now it seems the issue is following drive 7 now so I replaced that drive with a new drive and did not seem to help. Maybe I'm trying to power to many drives? Crazy thing is, I have not changed my power supply from my old build. This PSU used to power my 24 bay un-raid NAS with no issues. I now have paired down to 12 drive array. sd 7:0:6:0: Power-on or device reset occurred lb-unsevern-diagnostics-20201010-1251.zip
October 11, 20205 yr Community Expert 16 hours ago, evilmobster said: sd 7:0:6:0: Power-on or device reset occurred This usually suggest a connection/power problem.
October 11, 20205 yr Author I found out I had a bad Sata controller on my motherboard (I have two on this one). I removed all the drives from the bad controller. Then put everything on my LSI raid card and the working controller. Now its working flawlessly with high write speeds. Party sync finished in 6 hours for 18TB array. Thanks everyone for your help.
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