[Gluster-devel] Adding nodes
Marcus Herou
marcus.herou at tailsweep.com
Tue May 27 09:03:43 UTC 2008
Hi.
I have a question regarding expanding a glusterfs system which
probably been answered but still.
Lets say I use Unify over AFR and have 3 nodes where each file is
replicated twice.
Probably first hand a client file like the one on the web.
volume brick1
type protocol/client
option transport-type tcp/client # for TCP/IP transport
option remote-host 192.168.1.1 # IP address of the remote brick
option remote-subvolume brick # name of the remote volume
end-volume
volume brick2
type protocol/client
option transport-type tcp/client
option remote-host 192.168.1.2
option remote-subvolume brick
end-volume
volume brick3
type protocol/client
option transport-type tcp/client
option remote-host 192.168.1.3
option remote-subvolume brick
end-volume
volume brick-ns1
type protocol/client
option transport-type tcp/client
option remote-host 192.168.1.1
option remote-subvolume brick-ns
end-volume
volume brick-ns2
type protocol/client
option transport-type tcp/client
option remote-host 192.168.1.2
option remote-subvolume brick-ns
end-volume
volume afr1
type cluster/afr
subvolumes brick1 brick2
end-volume
volume afr2
type cluster/afr
subvolumes brick2 brick3
end-volume
volume afr-ns
type cluster/afr
subvolumes brick-ns1 brick-ns2
end-volume
volume unify
type cluster/unify
option namespace afr-ns
option scheduler rr
subvolumes afr1 afr2
end-volume
And after I add another node I add the following:
....
volume brick4
type protocol/client
option transport-type tcp/client
option remote-host 192.168.1.4
option remote-subvolume brick
end-volume
....
volume afr3
type cluster/afr
subvolumes brick3 brick4
end-volume
....
volume unify
type cluster/unify
option namespace afr-ns
option scheduler rr
subvolumes afr1 afr2 afr3
end-volume
So the question is really: Will the new node4 get the data from node3
automatically ?
I appreciate any answers.
Kindly
//Marcus
--
Marcus Herou CTO and co-founder Tailsweep AB
+46702561312
marcus.herou at tailsweep.com
http://www.tailsweep.com/
http://blogg.tailsweep.com/
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