[lustre-discuss] migrating from a stand-alone mgs to a merged mgs

[Dilger, Andreas]

Note that putting the MGS on the same partition reduces your flexibility in configuring Lustre, for example if you add a second filesystem on the same MDS you can't start the second filesystem easily without starting the combined MDS+MGS. 

That said, if you still want to merge them, you need to copy the files from CONFIGS/ in the MGT filesystem, and copy it to the MDT filesystem. I'm just trying to think of what else is needed so that the MGS service is started with the MDS. 

There is some documentation about this in the Lustre user manual to go the other way (separate combined MDS+MGS), so you should take a look at that. 

Cheers, Andreas

> On Sep 24, 2016, at 01:11, John White <jwhite at lbl.gov> wrote:
> 
> The same partition.  We currently have the MGS on one LV and the MDT on another and would like to combine them.
> 
>> On Sep 23, 2016, at 4:03 PM, Alexander I Kulyavtsev <aik at fnal.gov> wrote:
>> 
>> Do you want put mgs and mdt on the same node, or same partition?
>> 
>> You may have mds and mdt on the same node on different partitions. It may be easier to do. mgs partition is small.
>> 
>> Alex.
>> 
>>> On Sep 23, 2016, at 3:07 PM, John White <jwhite at lbl.gov> wrote:
>>> 
>>> Good Afternoon,
>>>    I’m trying to figure out how to take an existing file system with a distinct mgs and merge that into the (existing) mdt.  Is this possible?
>>> _______________________________________________
>>> lustre-discuss mailing list
>>> lustre-discuss at lists.lustre.org
>>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>> 
> 
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