On 05/10/17 15:34, vida.z...@gmail.com 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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