Re: trouble starting ceph @ boot

Peter Maloney <peter.maloney@xxxxxxxxxxxxxxxxxxxx> · Wed, 10 May 2017 19:34:18 +0200



    On 05/10/17 15:34, vida.zach@xxxxxxxxx
      wrote:

    
        System: Ubuntu Trusty 14.04

          
          Release : Kraken

          
          Issue:

          
          When starting ceph-osd daemon on boot via upstart. Error
          message in /var/log/upstart/ceph-osd-ceph_#.log reports 3
          attempt to start the service with the errors message below

          
          starting osd.12 at - osd_data /var/lib/ceph/osd/ceph-12
          /var/lib/ceph/osd/ceph-12/journal

          
          2017-05-09 13:38:34.507004 7f6d46a2e980 -1 journal
          FileJournal::_open: disabling aio for non-block journal. Use
          journal_force_aio to force use of aio anyway

        
    This is a bad message...it usually means you forgot to make a block
    device for the journal, so it made a file instead, which will be
    slow for many reasons including disabling aio. It's far better to
    make a 2nd partition for a colocated journal, even if you don't want
    a separate device. And then you have to point to it either with a
    symlink named journal, or in ceph.conf. And don't use raw names like
    /dev/sdb1, but use like /dev/disk/by-partlabel/journal_osd0 or
    partuuid or something else unique and stable.

    
    But that's not your failing to start problem.

  
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