Gluster users - Feb 2017 - replacing one brick in a distribute replicate volume in gluster 3.8

All:

I am quite new to gluster so this is likely my lack of knowledge. Here's my
scenario: I have a distribute replicate volume with a replica count of 3.
Each brick is on a different server and the total number of bricks in the
volume is 3.

Now lets say one server goes bad or down. Now i want to bring up a new
server with a single brick on that, add that into my volume, and then
replicate a copy of all the files from the one of the existing bricks to
the new one.

What's the procedure for doing that?

At first I thought, I would just add a new brick in and then remove the
other brick. However, that didn't seem to work. The add brick command
wanted a new set of bricks that match the volume replica count (so in this
case three new bricks). Moreover this was a different replica set, which of
course defeats the purpose of what I am trying to do.

Thanks,
Joe

PS I did try using replace-brick but discovered in the list serve this was
considered a deprecated command as far back as 2012.
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Okay, soooo a specific permutation of the replace-brick command does seem
to do what i was looking for. In this case server1 is being replaced by
server2. The command executes successfully and I then see the data on
server 2.

gluster volume replace-brick gv0 server1:/data/glusterfs/gv0/brick1/brick
server2:/data/glusterfs/gv0/brick1/brick commit force?

However, the reason I had initially stopped trying to use replace-brick is
due to this post in the list server saying that the command is going to be
deprecated and that there was a better way. So what are peoples opinions?
Is replace-brick the right way to do this or should be handled differently?

http://lists.gluster.org/pipermail/gluster-users.old/
2012-October/011502.html

Thanks,
Joe

On Sun, Feb 5, 2017 at 3:40 PM, Joseph Lorenzini <jaloren at gmail.com>
wrote:
> All:
>
> I am quite new to gluster so this is likely my lack of knowledge.
Here's
> my scenario: I have a distribute replicate volume with a replica count of
> 3. Each brick is on a different server and the total number of bricks in
> the volume is 3.
>
> Now lets say one server goes bad or down. Now i want to bring up a new
> server with a single brick on that, add that into my volume, and then
> replicate a copy of all the files from the one of the existing bricks to
> the new one.
>
> What's the procedure for doing that?
>
> At first I thought, I would just add a new brick in and then remove the
> other brick. However, that didn't seem to work. The add brick command
> wanted a new set of bricks that match the volume replica count (so in this
> case three new bricks). Moreover this was a different replica set, which of
> course defeats the purpose of what I am trying to do.
>
> Thanks,
> Joe
>
> PS I did try using replace-brick but discovered in the list serve this was
> considered a deprecated command as far back as 2012.
>
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