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Parity Noob Question - Solved

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I upgraded my parity and adding 5 more drives to my server. When I replaced the parity I did not see a copy file from the old parity for the new parity drive. So I went ahead and started the parity sync but it shows that it will take over 20 days to complete. My question is if I shut off the server to add the norco hot swap and to use for pre clear on new drives will I lose the parity progress?

I upgrade my parity and adding 5 more drives to my server. When I replaced the parity I did not see a copy file from the old parity for the new parity drive. So I went ahead and started the parity sync but it shows that it will take over 20 days to complete. My question is if I shut off the server to add the norco hot swap and to use for pre clear on new drives will I lose the parity progress?

Yes you will lose the progress.

 

But, at 20 days, there's something else going on (most likely you knocked loose a cable somewhere along the line).  Diagnostics would tell the tale

 

Are you sure you're doing a parity sync? Suspect you're doing  a correcting parity check that is finding many errors,  that would explain 20 days.

  • Author

I upgrade my parity and adding 5 more drives to my server. When I replaced the parity I did not see a copy file from the old parity for the new parity drive. So I went ahead and started the parity sync but it shows that it will take over 20 days to complete. My question is if I shut off the server to add the norco hot swap and to use for pre clear on new drives will I lose the parity progress?

Yes you will lose the progress.

 

But, at 20 days, there's something else going on (most likely you knocked loose a cable somewhere along the line).  Diagnostics would tell the tale

 

I do have 34TB would that make a difference

Parity.PNG.1d25057d06819970b923125873c71e68.PNG

I have 73TB and it takes me roughly 24hrs to do a parity sync, so I think there is definitely something else going on with your system. 2.8MB/sec is very slow, that should get up to the high 80's or higher, how long did you leave it for? Perhaps it will speed up and that figure of 20 days will drop?

Total size of the array doesn't make a difference for time (depending upon your hardware of course)

 

2.8M / sec is definitely not normal UNLESS you are running all your drives on PCI adapters.  Like johnnie said, either its finding a ton of corrections, or like I said you've knocked a cable loose.

 

I'd post your diagnostics

 

No, that's way too slow,  post diagnostics.

  • Author

Total size of the array doesn't make a difference for time (depending upon your hardware of course)

 

2.8M / sec is definitely not normal UNLESS you are running all your drives on PCI adapters.  Like johnnie said, either its finding a ton of corrections, or like I said you've knocked a cable loose.

 

I'd post your diagnostics

 

I am using this SUPERMICRO AOC-SASLP-MV8 PCI-Express x4 Low Profile SAS RAID Controller with with 2 Mini SAS to 4 SATA Data Cable supplying sata to 8 drives. The other 6 drives are running off mobo sata ports.

Total size of the array doesn't make a difference for time (depending upon your hardware of course)

 

2.8M / sec is definitely not normal UNLESS you are running all your drives on PCI adapters.  Like johnnie said, either its finding a ton of corrections, or like I said you've knocked a cable loose.

 

I'd post your diagnostics

 

I am using this SUPERMICRO AOC-SASLP-MV8 PCI-Express x4 Low Profile SAS RAID Controller with with 2 Mini SAS to 4 SATA Data Cable supplying sata to 8 drives. The other 6 drives are running off mobo sata ports.

i have a couple of those controllers on my system.  I get parity sync speeds in the 80-120MB?sec speed so you should be seeing something similar.
  • Author

I had installed a rocket raid 2300 for the new norco ss500. I removed that from the system and now I am getting 30mb/sec. I checked all the wires and not loose connections. When I install the rocket raid do I need to do something in the bios? I am getting 20-30mb/sec but to be very honest I know replies say to post diagnostics but I do not know what that means.

Go to tools and click diagnostics, attach the complete zip.

  • Author

Go to tools and click diagnostics, attach the complete zip.

 

Thanks so much, my speeds are back to 3mb/sec. I am attaching the diagnostics zip file. I apologize for being such a technie noob and greatly appreciate the help everyone offers here.

tower-diagnostics-20160306-1852.zip

You are getting CRC errors from at least these three disks, change sata cable/enclosure.

 

Device Model:     ST8000AS0002-1NA17Z
Serial Number:    Z840EWNX
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       32

Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML0220F30AVLTD
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       586

Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML4220F3154RDK
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       520

 

 

 

Also would be a good idea to to an extended SMART test for this one, and if it fails replace it:

 

Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML0220F31BERTD

197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       1

There are no syslog errors from these, but it’s a very short syslog, so keep an eye on these values, if value increases by 2 or more there’s also a problem with sata cable/enclosure, or although less likely, could be a bad port/controller.

 

 

Device Model:     ST3000DM001-9YN166
Serial Number:    S1F0KQ7D
199 UDMA_CRC_Error_Count    0x003e   200   199   000    Old_age   Always       -       214

Device Model:     ST4000DM000-1F2168
Serial Number:    S3018SVC
199 UDMA_CRC_Error_Count    0x003e   200   197   000    Old_age   Always       -       132

Device Model:     ST4000DM000-1F2168
Serial Number:    W300CWZA
199 UDMA_CRC_Error_Count    0x003e   200   197   000    Old_age   Always       -       16

  • Author

You are getting CRC errors from at least these three disks, change sata cable/enclosure.

 

Device Model:     ST8000AS0002-1NA17Z
Serial Number:    Z840EWNX
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       32

Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML0220F30AVLTD
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       586

Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML4220F3154RDK
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       520

 

 

All 3 of those disks are inside the same  Norco SS-500 and I believe it is the oldest Norco I have.

  • Author

You are getting CRC errors from at least these three disks, change sata cable/enclosure.

 

Device Model:     ST8000AS0002-1NA17Z

Also would be a good idea to to an extended SMART test for this one, and if it fails replace it:

[code]Device Model:     Hitachi HDS5C3020ALA632
Serial Number:    ML0220F31BERTD

197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       1

 

Ok I have moved around some sata cables and installed some new ones. I went and purchased a new psu also the Corsair CS750M. My parity syncs were still super slow and I ran an extended smart test on this drive and it passed and also ran a smart test on disk 10 that also passed. Problem is now that drive 9  ML0220F31BERTD is showing unmountable. I installed my original parity drive back into the server until I know what to do with this unmountable drive. I am attaching a new diagnostics report but I had to delete a syslog file because the attachment was too large. Thanks again

tower-diagnostics-20160308-0736.zip

Disk9 is not only unmountable, but also disabled, can you explain all the steps you made when changing back to old parity?

  • Author

Disk9 is not only unmountable, but also disabled, can you explain all the steps you made when changing back to old parity?

 

I just swapped the paritys around and replaced some sata cables. The new drive that I was wanting to use for parity never got past 1% synced. So I figured to just put the old parity back in server. I booted up and now disk 9 is doing this.

If you haven’t written/deleted anything from the array since you last used this parity disk you can try this:

 

-take a screenshot of current disk assignments

-go to tools and click new config

-reassign all disks including old parity

-before starting array check “parity is already valid”, then start array

-check if disk9 mounts

 

This won’t solve your main problem, the UDMA_CRC errors are almost certainly the reason for the very slow parity sync and disable disk, and you have to fix those before attempting another sync, this is just to see if disk9 filesystem is actually ok.

 

  • Author

If you haven’t written/deleted anything from the array since you last used this parity disk you can try this:

 

-take a screenshot of current disk assignments

-go to tools and click new config

-reassign all disks including old parity

-before starting array check “parity is already valid”, then start array

-check if disk9 mounts

 

This won’t solve your main problem, the UDMA_CRC errors are almost certainly the reason for the very slow parity sync and disable disk, and you have to fix those before attempting another sync, this is just to see if disk9 filesystem is actually ok.

 

Sweet now drive 9 is mounted. It is attempting another parity sync now with speeds around 30MB/sec, should I let it sync for a little?

It is attempting another parity sync now with speeds around 30MB/sec, should I let it sync for a little?

 

That means you didn't check the “parity is already valid” box before starting the array.

 

If it's going well you can continue but stop if any errors appear on the main page.

 

Maybe also post a syslog an half hour from now so we can see if there still are UDMA_CRC errors.

  • Author

Well parity sync speed are back to 3MB/sec anfd I attached an updated syslog to see if anything stands out, Thanks

tower-syslog-20160308-1053.zip

You're still getting UDMA_CRC errors, better to cancel the sync and attach full diagnostics.

  • Author

You're still getting UDMA_CRC errors, better to cancel the sync and attach full diagnostics.

 

My diagnostic it too large to attach. Inside the logs folder there are 2 syslog files on syslog(133kb) and the other syslog.1(128kb). Should I delete one to make attachment smaller?

Look at the date/time and attach the most recent.

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