Re: Cannot start osd due to permission of journal raw device

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On Fri, 6 Nov 2015, Chen, Xiaoxi wrote:
> Hi,
>     I tried  infernalis (version 9.1.0 (3be81ae6cf17fcf689cd6f187c4615249fea4f61)) but failed due to permission of journal ,  the OSD  was upgraded from hammer(also true for newly created OSD).
>   I am using raw device as journal, this is because the default privilege of raw block is root:disk. Changing the journal owner to ceph:ceph solve the issue. Seems we can either: 
>   1. add ceph to "disk" group and run ceph-osd with --setuser ceph --setgroup disk?
>   2. Require user to set the ownership of journal device to ceph:ceph is they want to use raw as journal?  Maybe we can done this in ceph-disk.
> 
>    Personally I would prefer the second one , what do you think?

The udev rules should be setting the jouranl device ownership to 
ceph:ceph.  IIRC there was a race in ceph-disk that could prevent this 
from happening in some cases but that is now fixed.  Can you try the 
infernalis branch?

sage
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