[Gluster-devel] Filesystem use percentages under ALU

[Majied Najjar]

Hi,

How is read and write usage determined regarding the read and write thresholds defined in the ALU container in the client config?  Is there a way I can see what percentage the disks are currently at?

Also, are there settings/criteria for determining which AFR disk is used for primary reads and writes?  Currently, I can see some margin of failover between two AFR disks in a ALU configuration but often I have to restart the client due to transport disconnect errors.

Here is my client config:
volume client1
  type protocol/client
  option transport-type tcp/client
  option remote-host 10.10.48.2
  option remote-subvolume brick
end-volume

volume client2
  type protocol/client
  option transport-type tcp/client
  option remote-host 10.10.48.3
  option remote-subvolume brick
end-volume

volume client3
  type protocol/client
  option transport-type tcp/client
  option remote-host 10.10.48.4
  option remote-subvolume brick
end-volume

volume client4
  type protocol/client
  option transport-type tcp/client
  option remote-host 10.10.48.5
  option remote-subvolume brick
end-volume

volume afr1
  type cluster/afr
  subvolumes client1 client3
  option replicate *:2
end-volume

volume afr2
  type cluster/afr
  subvolumes client2 client4
  option replicate *:2
end-volume

volume unify
  type cluster/unify
  subvolumes afr1 afr2
  option scheduler alu
  option alu.limits.min-free-disk 30GB
  option alu.limits.max-open-files 10000
  option alu.order disk-usage:read-usage:write-usage:open-files-usage:disk-speed-usage
  option alu.disk-usage.entry-threshold 2GB
  option alu.disk-usage.exit-threshold 64MB
  option alu.open-files-usage.entry-threshold 1024
  option alu.open-files-usage.exit-threshold 32
  option alu.read-usage.entry-threshold 10%
  option alu.open-files-usage.exit-threshold 32
  option alu.read-usage.entry-threshold 10%
  option alu.read-usage.exit-threshold 4%
  option alu.write-usage.entry-threshold 10%
  option alu.write-usage.exit-threshold 4%
  option alu.stat-refresh.interval 10sec
# option alu.stat-refresh.num-file-create 10
  option readdir-force-success on
end-volume

volume writebehind
  type performance/write-behind
  option aggregate-size 131072
  subvolumes unify
end-volume

volume readahead
  type performance/read-ahead
  option page-size 65536
  option page-count 16
  subvolumes writebehind
end-volume

Thanks,
Majied Najjar