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From Shawn Heisey <>
Subject Re: Move index directory to another partition
Date Wed, 02 Aug 2017 01:03:57 GMT
On 8/1/2017 4:00 PM, Mahmoud Almokadem wrote:
> I'm using ubuntu and I'll try rsync command. Unfortunately I'm using one
> replication factor but I think the downtime will be less than five minutes after following
your steps.
> But how can I start Solr backup or why should I run it although I copied
> the index and changed theo path?
> And what do you mean with "Using multiple passes with rsync"?

The first time you copy the data, which you could do with cp if you
want, the time required will be limited by the size of the data and the
speed of the disks.  Depending on the size, it could take several hours
like you estimated.  I would suggest using rsync for the first copy just
because you're going to need the same command again for the later passes.

Doing a second pass with rsync should go very quickly.  How fast would
depend on the rate that the index data is changing.  You might need to
do this step more than once just so that it gets faster each time, in
preparation for the final pass.

A final pass with rsync might only take a few seconds, and if Solr is
stopped before that final copy is started, then there's no way the index
data can change.


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