One thing to add, I had a similar issue with manually created OSD’s not coming 
back up with a reboot, they were being mounted but not started
To resolve this I had to create a file on each OSD called sysvinit

Regards,
Matt

On 9 Aug 2014, at 7:57 am, Andrew Woodward <[email protected]> wrote:

> Dan,
> 
> It is not necessary to specify the OSD data in ceph.conf anymore. Ceph has 
> two auto-start functions besides this method.
> 
> udev rules:
> ceph uses a udev rule to scan and attempt to mount (and activate) partitions 
> with specific GUID set for the partition typecode
> sgdisk --typecode=<<partation number>>:<<GUID>> /dev/<<disk>>
> 
> the exact GUID's to use can be found 
> https://github.com/ceph/ceph/blob/master/udev/95-ceph-osd.rules. These are 
> set automaticly using ceph-disk (or ceph-deploy) if it creates the partition 
> from an empty disk, in the case that it does not, you have to set them by 
> hand, all be it should probably do this, or at least tell you should do this.
> 
> ceph init script:
> the ceph init script will scan /var/lib/ceph/osd (or the otherwise configured 
> location) for <cluster name>-<id>  (default cluster name is ceph) folders and 
> attempt to start the osd service for each of them if they look correct
> 
> lastly, and possibly the most annoying way is that you can configure each OSD 
> and path in ceph.conf, I don't have any good examples as the two prior are 
> more flexible / require less config.
> 
> 
> 
> 
> On Fri, Aug 8, 2014 at 8:53 AM, O'Reilly, Dan <[email protected]> wrote:
> Does anybody have a good sample ceph.conf file I can use for reference?  I’m 
> having a problem where OSD’s won’t come back up after a sysem reboot.
> 
>  
> 
> Dan O'Reilly
> 
> UNIX Systems Administration
> 
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> 
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> 
> -- 
> Andrew
> Mirantis
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