[Gluster-users] glusterfsd process spinning

[Justin Clift]

On 25/06/2014, at 6:21 AM, Franco Broi wrote:
> Ok, I'm going to try this tomorrow. Anyone have anything else to add??

Um, "let us know how it goes". :)


> What's the worst that can happen?

Kicks off robot armageddon?

+ Justin


> On Mon, 2014-06-23 at 20:11 +0530, Kaushal M wrote: 
>> On Wed, Jun 18, 2014 at 6:58 PM, Justin Clift <justin at gluster.org> wrote:
>>> On 18/06/2014, at 9:36 AM, Kaushal M wrote:
>>>> You are right. Since you had installed gluster-3.5, the operating
>>>> version had changed to 3, which is the operating version of gluster
>>>> 3.5. This op-version is saved in the glusterd.info file in
>>>> /var/lib/glusterd.
>>>> The op-version of gluster-3.4 is just 2. So when you downgraded,
>>>> glusterd refused to start as it couldn't support features that could
>>>> have been enabled when you were running gluster-3.5.
>>> 
>>> 
>>> What's the workaround?  Delete /var/lib/glusterd/glusterd.info after
>>> the downgrade, before starting the 3.4 daemons?
>>> 
>> 
>> Deleting glusterd.info would be a bad idea, as it would cause the UUID
>> to be regenerated. Instead, you could just edit the glusterd.info
>> file, and set operating-version to 2. This would allow glusterd to
>> start up. I would also suggest that the volfiles be regenerated as
>> well, by running
>>  'glusterd --xlator-option *.upgrade=on -N'.
>> If volfiles were generated with newer features/xlators etc., while
>> running at the higher version, this would make sure that the volfiles
>> are again compliant with 3.4. This would only work if no new features
>> have been explicitly enabled. In that case you'd need to edit the
>> volinfo files and remove any new options that were enabled, before
>> regenerating the volfiles.
>> 
>> ~kaushal
>> 
>>> + Justin
>>> 
>>> --
>>> GlusterFS - http://www.gluster.org
>>> 
>>> An open source, distributed file system scaling to several
>>> petabytes, and handling thousands of clients.
>>> 
>>> My personal twitter: twitter.com/realjustinclift
>>> 
> 
> 

--
GlusterFS - http://www.gluster.org

An open source, distributed file system scaling to several
petabytes, and handling thousands of clients.

My personal twitter: twitter.com/realjustinclift