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Lots of parity check errors

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On my monthly parity check error and got a ton of errors:

 

Last check completed on Wed 01 Mar 2017 10:22:42 AM AST (two days ago), finding 7244649 errors. 

 

I have four disks one 3TB parity with 3x2TB storage. None of the disks have any errors logged and pass the extended SMART tests.

 

Syslog shows no disk errors but on the MD recovery I can find below.

 

 

Mar  1 01:00:01 caspar kernel: md: using 1536k window, over a total of 2930266532 blocks.
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=128
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=256
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=288
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=312
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=320
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=328
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=336
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=352
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=384
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=408
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=416
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=432
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=448
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=456
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=464
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=472
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=544
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=568
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=576
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=584
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=592
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=600
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=24704
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=24752
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=24760
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=25040
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=25048
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=25056
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=25088
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26008
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26016
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26024
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26032
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26448
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26456
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26624
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26632
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26640
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26648
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26656
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26664
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26672
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26680
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26688
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26696
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26704
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26712
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26720
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26728
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26736
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26744
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26752
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26760
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26768
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26816
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26824
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26832
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26840
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26848
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26864
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26872
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26880
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26888
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26896
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26904
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26912
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26920
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26928
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26936
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26944
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26952
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26960
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=26968
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27176
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27376
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27688
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27888
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27896
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=27904
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28200
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28400
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28408
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28416
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28424
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28432
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28440
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28448
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28456
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28464
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28472
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28480
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28488
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28496
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28504
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28512
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28520
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28528
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28536
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28544
Mar  1 01:00:23 caspar kernel: md: recovery thread: P corrected, sector=28552
Mar  1 01:00:23 caspar kernel: md: recovery thread: stopped logging

 

Edited by binfuser
added diagnostics

  • Community Expert

Why did you remove your diagnostics?

  • Author

There's some personal information in the syslog from the mover I don't really care to share on a public forum.

  • Community Expert
6 minutes ago, binfuser said:

There's some personal information in the syslog from the mover I don't really care to share on a public forum.

You can turn off mover logging for future diagnostics, Settings - Scheduler - Mover Settings. You can also edit the syslog yourself and put it back into the zip and post it.

 

That is a lot of parity errors. Enough to make me think parity wasn't really ever valid.

 

Had you changed the array configuration without rebuilding parity?

  • Author
Just now, trurl said:

You can turn off mover logging for future diagnostics, Settings - Scheduler - Mover Settings. You can also edit the syslog yourself and put it back into the zip and post it.

 

That is a lot of parity errors. Enough to make me think parity wasn't really ever valid.

 

Had you changed the array configuration without rebuilding parity?

 

Thanks! I turned that off. I replaced the parity with the 3TB disk in Dec 2016. I switched the server motherboard and CPU within the last month.

 

One thing to mention I formatted the data disks as Btrfs so I'm scrubbing those now. I intend to rebuild without that format in the next couple of weeks (new 3tb disk on the way).

 

Edited the file and reattaching

caspar-diagnostics-20170303-1828.zip

  • Community Expert

I still think you somehow didn't have valid parity but I would need a lot more specific details about exactly what you did with your array.

 

If you formatted the disks in unRAID when they were part of an array that already had valid parity, then that should have been OK since parity would have been updated during the format.

 

Did you set a New Config at some point and tell it parity was valid?

 

Do you know how parity works?

 

  • Author

Followed the swap procedure here https://lime-technology.com/wiki/index.php/The_parity_swap_procedure last december.

 

I also setup with Btrfs on initial setup of my 6.2 server a while ago.

 

If I look at the history of the checks it was fine the prior months:

Duration Speed Status Errors
2017-03-01, 10:22:42 9 hr, 22 min, 41 sec 88.9 MB/s OK 7244649
2017-02-04, 05:17:40 9 hr, 8 min, 35 sec 91.2 MB/s OK  
2017-02-01, 10:12:41 9 hr, 12 min, 40 sec 90.5 MB/s OK

 

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