Dear All ,<br><br>I am trying to design high available and cluster set up for my benchmarking .Today I read some design information available in GlusterFS home page .<br> <br><br><a href="http://www.gluster.org/docs/index.php/Simple_High_Availability_Storage_with_GlusterFS_2.0#Larger_storage_using_Unify_.2B_AFR">http://www.gluster.org/docs/index.php/Simple_High_Availability_Storage_with_GlusterFS_2.0#Larger_storage_using_Unify_.2B_AFR</a><br>
<br> It is configured using 6 server single client .server 1 and server 2 has two directory /export and /export-ns .<br><br><pre>volume brick1<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.1 # IP address of the remote brick<br>
option remote-subvolume brick # name of the remote volume<br>end-volume<br><br>From this I understand that<br>It will mount the server1(192.168.1.1) exported directory to client machine mount point<br><br>volume brick2<br>
type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.2<br> option remote-subvolume brick<br>end-volume<br><br>It will mount the server2 (192.168.1.2) exported directory to client machine mount point<br>
<br><br><br><br>volume brick3<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.3<br> option remote-subvolume brick<br>end-volume<br><br>It will mount the server3 (192.168.1.3) exported directory to client machine mount point<br>
<br>volume brick4<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.4<br> option remote-subvolume brick<br>end-volume<br><br>It will mount the server4 (192.168.1.4) exported directory to client machine mount point<br>
<br>volume brick5<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.5<br> option remote-subvolume brick<br>end-volume<br><br>It will mount the server5 (192.168.1.5) exported directory to client machine mount point<br>
<br>volume brick6<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.6<br> option remote-subvolume brick<br>end-volume<br><br>It will mount the server6 (192.168.1.6) exported directory to client machine mount point<br>
<br>volume brick-ns1<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.1<br> option remote-subvolume brick-ns <b># Note the different remote volume name.</b><br>end-volume<br><br>It will mount the server1(192.168.1.1) exported directory (/home/export-ns/<br>
) to client machine mount point<br><br><br>volume brick-ns2<br> type protocol/client<br> option transport-type tcp<br> option remote-host 192.168.1.2<br> option remote-subvolume brick-ns <b># Note the different remote volume name.</b><br>
end-volume<br><br>It will mount the server2(192.168.1.2) exported directory (/home/export-ns/<br>) to client machine mount point<br><br><br><br>volume afr1<br> type cluster/afr<br> subvolumes brick1 brick4 <br>end-volume<br>
<br>Here brick1 replicates all files to brick4 ,Is it correct? <br><br>volume afr2<br> type cluster/afr<br> subvolumes brick2 brick5<br>end-volume<br><br>volume afr3<br> type cluster/afr<br> subvolumes brick3 brick6<br>end-volume<br>
<br>volume afr-ns<br> type cluster/afr<br> subvolumes brick-ns1 brick-ns2<br>end-volume<br><br>Here the namespace information are replicating .Is it correc?<br><br>volume unify<br> type cluster/unify<br> option namespace afr-ns <br>
option scheduler rr<br> subvolumes afr1 afr2 afr3<br>end-volume<br></pre>what actuly unify does here?<br>what is the meaning of namespace in GlusterFS?<br>what about storage scalibality in this design? both server and client. can you please give one example ?<br>
how can do HA +unify design with multiply server with multiple client?for example 8 server two client . <br><br><br> any one please help me to understand those and correct me .<br><br>Thanks for your time <br> L. Mohan <br>
<br><br><br><br><br><br> <br>