Re: Automatic OSD start on Jewel

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On Wed, Jan 04, 2017 at 12:03:39PM +0100, Florent B wrote:
> Hi everyone,
> 
> I have a problem with automatic start of OSDs on Debian Jessie with Ceph
> Jewel.
> 
> My osd.0 is using /dev/sda5 for data and /dev/sda2 for journal, it is
> listed in ceph-disk list :
> 
> /dev/sda :
>  /dev/sda1 other, 21686148-6449-6e6f-744e-656564454649
>  /dev/sda3 other, linux_raid_member
>  /dev/sda4 other, linux_raid_member
>  /dev/sda2 ceph journal, for /dev/sda5
>  /dev/sda5 ceph data, active, cluster ceph, osd.0, journal /dev/sda2
> 
> It was created with ceph-disk prepare.
> 
> When I run "ceph-disk activate /dev/sda5", it is mounted and started.
> 
> If I run "systemctl start ceph-disk@/dev/sda5", the same, it's OK. But
> this is a service that can't be "enabled" !!
> 
> But on reboot, nothing happen. The only thing which tries to start is
> ceph-osd@0 service (enabled by ceph-disk, not me), and of course it
> fails because its data is not mounted.
> 
> I think udev rules should do this, but it does not seem to.
> 
> 
> root@host102:~# sgdisk -i 2 /dev/sda
> Partition GUID code: 45B0969E-9B03-4F30-B4C6-B4B80CEFF106 (Unknown)
> Partition unique GUID: D0F4F00F-723D-4DAD-BA2E-93D52EB564C1
> First sector: 2048 (at 1024.0 KiB)
> Last sector: 9765887 (at 4.7 GiB)
> Partition size: 9763840 sectors (4.7 GiB)
> Attribute flags: 0000000000000000
> Partition name: 'ceph journal'
> 
> root@host102:~# sgdisk -i 5 /dev/sda
> Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D (Unknown)
> Partition unique GUID: 5AB4F732-AFBE-4DEA-A4C6-AD290C1302D9
> First sector: 123047424 (at 58.7 GiB)
> Last sector: 1953459199 (at 931.5 GiB)
> Partition size: 1830411776 sectors (872.8 GiB)
> Attribute flags: 0000000000000000
> Partition name: 'ceph data'
> 
> 
> Does someone have an idea of what's going on ?
> 
> Thank you.
> 
> Florent

are you using the packages from ceph.com? if so, you might be affected
by http://tracker.ceph.com/issues/18305 (and
http://tracker.ceph.com/issues/17889)

did you mask the ceph.service unit generated from the ceph init script?

what does "systemctl status '*ceph*'" show? what does "journalctl -b
'*ceph*'" show?

what happens if you run "ceph-disk activate-all"? (this is what is
called last in the init script and will probably trigger mounting of the
OSD disk/partition and starting of the ceph-osd@..  service)

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