Re: Upgrade to Infernalis: OSDs crash all the time

Kees Meijs <kees@xxxxxxxx> · Tue, 21 Aug 2018 03:45:33 +0200



    Hi there,

    
    A few hours ago I started the given OSD again and gave it weight
    1.00000. Backfilling started and more PGs became active+clean.

    
    After a while the same crashing behaviour started to act up so I
    stopped the backfilling.

    
    Running with noout,nobackfill,norebalance,noscrub,nodeep-scrub flags
    now but at least it seems the cluster seems stable (fingers
    crossed...)

    
    Possible plan of attack:

    
      Stopping all Infernalis OSDs.
      Remove Ceph Infernalis packages from OSD node.
      Install Hammer packages.
      Start the OSDs (or maybe the package installation does this
        already.)
    
    Effectively this is an OSD downgrade. Is this supported or does
      Ceph "upgrade" data structures on disk as well?
    Recap: this would imply going from Infernalis back to Hammer.
    Any thoughts are more than welcome (maybe a completely different
      approach makes sense...) Meanwhile, I'll try to catch some sleep.
    Thanks, thanks!
    Best regards,

      Kees

    
    On 20-08-18 21:46, Kees Meijs wrote:

    
      Other than restarting the "out" and stopped OSD for the time
        being (haven't tried that yet) I'm quite lost.
    
    
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