Re: [ceph-users] How do you replace an OSD?

2013-08-13 Thread Dmitry Postrigan

>> I have tried to simulate a hard drive (OSD) failure: removed the OSD 
>> (out+stop), zapped it, and then
>> prepared and activated it. It worked, but I ended up with one extra OSD (and 
>> the old one still showing in the ceph -w output).
>> I guess this is not how I am supposed to do it?

> It is.  You can remove the old entry with 'ceph osd crush rm N' and/or 
> 'ceph osd rm N', or just leave it there.

Thank you.

>> Documentation recommends manually editing the configuration, however, there 
>> are no osd entries in my /etc/ceph/ceph.conf

> That's old info; where did you read it so we can adjust the docs?

Here you go: 
http://ceph.com/docs/master/rados/operations/add-or-rm-osds/#removing-osds-manual
 (step 4,5)


> Thanks!
> sage


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Re: [ceph-users] How do you replace an OSD?

2013-08-13 Thread Sage Weil
On Tue, 13 Aug 2013, Dmitry Postrigan wrote:
> 
> I just got my small Ceph cluster running. I run 6 OSDs on the same server to 
> basically replace mdraid.
> 
> I have tried to simulate a hard drive (OSD) failure: removed the OSD 
> (out+stop), zapped it, and then
> prepared and activated it. It worked, but I ended up with one extra OSD (and 
> the old one still showing in the ceph -w output).
> I guess this is not how I am supposed to do it?

It is.  You can remove the old entry with 'ceph osd crush rm N' and/or 
'ceph osd rm N', or just leave it there.

> Documentation recommends manually editing the configuration, however, there 
> are no osd entries in my /etc/ceph/ceph.conf

That's old info; where did you read it so we can adjust the docs?

Thanks!
sage


 
> So what would be the best way to replace a failed OSD?
> 
> Dmitry
> 
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[ceph-users] How do you replace an OSD?

2013-08-12 Thread Dmitry Postrigan

I just got my small Ceph cluster running. I run 6 OSDs on the same server to 
basically replace mdraid.

I have tried to simulate a hard drive (OSD) failure: removed the OSD 
(out+stop), zapped it, and then
prepared and activated it. It worked, but I ended up with one extra OSD (and 
the old one still showing in the ceph -w output).
I guess this is not how I am supposed to do it?

Documentation recommends manually editing the configuration, however, there are 
no osd entries in my /etc/ceph/ceph.conf

So what would be the best way to replace a failed OSD?

Dmitry

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