Parity Sync Errors Corrected


xman111

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Hey guys, just precleared an 8tb disk, then added it to my array.  I made a new config (so i could swap disk numbers around), and got 700k parity sync errors corrected.  Can anyone have a look at my diagnostics file as i have some important data on my array.  I use this  array to make all my backups so if my family photos are corrupted i need to know how to fix this. I have never seen any errors before..   Any help would be very much appreciated.

 

 

server-diagnostics-20200223-1333.zip

Edited by xman111
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I did change disk 3 and 4 on purpose.  did you see anything in logs that is a problem?   should I rerun parity?  can I be confident my data isn't corrupted? 

 

thanks for your response as it is worrisome. 

Edited by xman111
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Parity2 calculation, unlike parity1, is dependent on the order of the disks, simple as that. And, your syslog says it was correcting Q (parity2).

Feb 22 16:32:15 Server kernel: mdcmd (43): check 
Feb 22 16:32:15 Server kernel: md: recovery thread: check P Q ...
Feb 22 16:32:15 Server kernel: md: recovery thread: Q corrected, sector=0
Feb 22 16:32:15 Server kernel: md: recovery thread: Q corrected, sector=8
...
Feb 22 16:32:15 Server kernel: md: recovery thread: Q corrected, sector=816
Feb 22 16:32:15 Server kernel: md: recovery thread: Q corrected, sector=824
Feb 22 16:32:15 Server kernel: md: recovery thread: stopped logging

So this is completely normal. Run a non-correcting parity check to verify and everything should be fine.

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