Proposed GlusterFS 1.3.12 conf - Cory Meyer - f7814657c

Proposed GlusterFS 1.3.12 configuration with 3 node replication via AFR.

Server:  Brick --> TCP
Client:  Bricks -->  AFR --> io-thread --> write-behind --> io-cache --> read-ahead

## /etc/glusterfs-server.vol  ##BEGIN##
volume brick01
  type storage/posix
  option directory /media/sda5/brick
end-volume

volume server
  type protocol/server
  option transport-type tcp/server
  option auth.ip.brick01.allow 127.0.0.1,192.168.*
  subvolumes brick01 brick02 brick03
end-volume
## /etc/glusterfs-server.vol  ##END##

posix/brick --> tcp
## /etc/glusterfs-clientr.vol  ##BEGIN##
volume farm01.brick01
 type protocol/client
 option transport-type tcp/client
 option remote-host 192.168.201.101
 option remote-subvolume brick01
end-volume

volume farm02.brick01
 type protocol/client
 option transport-type tcp/client
 option remote-host 192.168.201.102
 option remote-subvolume brick01
end-volume

volume farm03.brick01
 type protocol/client
 option transport-type tcp/client
 option remote-host 192.168.201.103
 option remote-subvolume brick01
end-volume

volume afr0
 type cluster/afr
 option read-subvolume farm01.brick01
 subvolumes farm01.brick01 farm02.brick01 farm03.brick01
end-volume


volume iot_afr0
    type performance/io-threads
    subvolumes afr0
    option thread-count 4
    option cache-size 96MB
end-volume

## Add writeback feature
volume write-behind_afr0
  type performance/write-behind
  option aggregate-size 1MB
  # option flush-behind off
  # subvolumes iot_afr0
  subvolumes afr0
end-volume

### Add IO-Cache feature
volume iocache_afr0
  type performance/io-cache
  #option page-size 256KB
  #option page-count 2
  option cache-size 64MB             # default is 32MB
  option page-size 1MB               #128KB is default option
  # option priority *.h:3,*.html:2,*:1 # default is '*:0'
  option force-revalidate-timeout 2  # default is 1
  subvolumes write-behind_afr0
end-volume

### Add readahead feature
volume readahead_afr0
  type performance/read-ahead
  option page-size 256kb     # unit in bytes
  option page-count 4      # cache per file  = (page-count x page-size)
  subvolumes iocache_afr0
end-volume

## /etc/glusterfs-clientr.vol  ##END##