• Super Fast Parity Check on 6.8RC7

    Marshalleq

    By Marshalleq

      • Closed

    I'm really just putting this here to check if this is normal.  Two things happened since my last parity check:

     

    1: I took two disks (all same type) out of my 8 disk unraid array and made them a ZFS mirror (so 6 are left) and recreated the array.

    2: I upgraded to 6.8 series

     

    The result of one of those I assume is that my parity check went from about 16 hours to 2 hours, 44 minutes and 33 seconds.  Honestly, this doesn't seem like a possible speed (they are 8TB Seagate Enterprise capacity SATA disks).  Anyone else see anything similar?

     

    2041680912_ScreenShot2019-12-05at07_49_13.thumb.png.1bea3a828cf04d78b4e029f013331097.png

     

    I haven't tried a rerun of the parity, hoping to get some input here first.

     

    Many thanks,

     

    Marshalleq

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    Marshalleq

    I was thinking I'll just run it again manually to see first (this was the automatic one that ran overnight and no I haven't paused anything - didn't touch anything at all, just got a message saying it was completed.  However diags are so easy so have attached anyway.

    obi-wan-diagnostics-20191204-1902.zip

    Edited by Marshalleq
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    JorgeB 
    Dec  2 05:00:02 OBI-WAN kernel: mdcmd (209): nocheck PAUSE

     

    It was paused, stats are incorrectly calculated after a pause.

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    Marshalleq

    So somehow it was paused maybe weeks ago and this is a continuation of that?  Because I most certainly haven't touched anything parity related for probably 4 weeks - even the server has been rebooted multiple times since then.

     

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    JorgeB

    It was paused several times, maybe you installed the parity check plugin? Stock Unraid doesn't auto-pause, only manually.

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    itimpi

    If the parity check plugin was installed it should have patched the history entry to give the correct value (although the details displayed on the Main page only relate to the last increment).

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    Marshalleq

    OK, I guess it was the plugin then - I do have that.  So the fact that I didn't know it was running and suddenly it's finished means the plugin is working perfectly.  Mystery solved.  I was wondering why the drives were so hot at night - now I know why!

     

    Thanks all.

     

    Marshalleq

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