Re: Can not disable rbd cache

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Let's start from the top. Where are you stuck with [1]? I have noticed
that after evicting all the objects with RBD that one object for each
active RBD is still left, I think this is the head object. We haven't
tried this, but our planned procedure for finishing the deactivation
of a cache tier is to shut down the active VM, then flush again and
then start the VM again. Once all VMs have been stopped, flushed and
restarted, we should be able to remove the cache tier. That way we
don't have to stop all the VMs at once or for long periods of time. I
hope at some point the last object can be flushed without shutting
down the VM.

If you are experiencing something different, please provide some more
info, especially more detailed steps of what you tried.

[1] http://docs.ceph.com/docs/master/rados/operations/cache-tiering/?highlight=cache#removing-a-cache-tier
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Robert LeBlanc
PGP Fingerprint 79A2 9CA4 6CC4 45DD A904  C70E E654 3BB2 FA62 B9F1


On Wed, Feb 24, 2016 at 4:29 AM, Oliver Dzombic <info@xxxxxxxxxxxxxxxxx> wrote:
> Hi Esta,
>
> how do you know, that its still active ?
>
> --
> Mit freundlichen Gruessen / Best regards
>
> Oliver Dzombic
> IP-Interactive
>
> mailto:info@xxxxxxxxxxxxxxxxx
>
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>
> IP Interactive UG ( haftungsbeschraenkt )
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>
>
> Am 24.02.2016 um 12:27 schrieb wikison:
>> Hi,
>> I want to disable rbd cache in my ceph cluster. I've set the *rbd cache*
>> to be false in the [client] section of ceph.conf and rebooted the
>> cluster. But caching system was still working. How can I disable the rbd
>> caching system? Any help?
>>
>> best regards.
>>
>> 2016-02-24
>> ------------------------------------------------------------------------
>> Esta Wang
>>
>>
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@xxxxxxxxxxxxxx
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
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