[ceph-users] how to identify pre-luminous rdb images

Denny Kreische denny at kreische.eu
Mon Mar 11 07:03:16 PDT 2019



> Am 11.03.2019 um 12:21 schrieb Konstantin Shalygin <k0ste at k0ste.ru>:
> 
> 
>> Hello list,
>> 
>> I upgraded to mimic some time ago and want to make use of the upmap feature now.
>> But I can't do "ceph osd set-require-min-compat-client luminous" as there are still pre-luminous clients connected.
>> 
>> The cluster was originally created from jewel release.
>> 
>> When I run "ceph features", I see many connections from jewel clients though all systems have mimic installed and are rebooted since then.
>> 
>> 08:44 dk at mon03 <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> [fra]:~$ ceph features
>> [...]
>>     "client": [
>>         {
>>             "features": "0x7010fb86aa42ada",
>>             "release": "jewel",
>>             "num": 70
>>         },
>>         {
>>             "features": "0x3ffddff8eea4fffb",
>>             "release": "luminous",
>>             "num": 185
>>         },
>>         {
>>             "features": "0x3ffddff8ffa4fffb",
>>             "release": "luminous",
>>             "num": 403
>>         }
>> [...]
>> 
>> These client connections belong to mapped rbd images.
>> When I inspect the rbd images with "rbd info" I don't see any difference in format and features.
>> 
>> How can I determine which rbd images are affected and how can I transform them to luminous types if possible.
> 
> Do you have krbd clients? Because kernel clients still have 'jewel' release, but upmap is supported. 
> 
that was the important hint.
we changed our kvm environment (ganeti) from kernelspace rbd to userspace rbd some time ago. but there were still VMs running from before. Now I just need to restart these VMs and all should be fine.

Thanks,
Denny
> 
> If so the kernel should be 4.13+ or EL 7.5. If that so you should append --yes-i-really-mean-it as safe workaround.
> 
> 
> 
> 
> 
> k
> 

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