I am pretty sure the auto balancing feature is not possible to turn off.
It exists by design to automatically handle situations when a chunk
server dies, as in a production environment where there would be dozens
or hundreds of nodes and thus a higher probability of having a commodity
machine hardware failure.
Perhaps this pattern of use could be better handled by turning on the
3rd computer, having it not attached to the file system and just be an
individual disk, that you'd invoke rsync or other copy from the moosefs
instance into. In that use, a USB external drive is also just as good
for this.
If power savings is really a concern,
Also, the effort to do the updates to the chunk copies that were offline
to be in the same version and state as the other two that were online is
not the same kind of experience as plugging in a USB external drive and
invoking rsync; there is no finite and exact amount of time this will
take, and not practical to determine when the updates will start or finish.
On 11-12-21 4:03 AM, Mike wrote:
> I have a 3 storage server MFS cluster in my basement. One is also the
> meta master, the other two are metaloggers.
>
> I have all chunks set to 2 copies, except for a few personal items which
> are set to 3 copies.
>
> now, I don't *need* two copies to be online all the time, just to be
> able to recover from problems. Therefore, I should be able to shut down
> one storage server, wake it up once a day, sync changes, and then shut
> it down again. My power bill will then drop and the world will be a
> greener place. :)
>
> Anyone see any problems with this configuration? how can I stop MFS from
> trying to re-balanace/copy whatever's left on the other two servers?
>
>
>
>
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