Re: [Gluster-devel] glusterfs entry in fstab

[Ian Rogers]

On 18/03/2010 09:46, Amar Tumballi wrote:

did anybody know how i do an entry for glusterfs in fstab with options like = (--disable-direct-io-mode)?

is this correct?

fstab:
/etc/glusterfs/mount-backup01-client_repl.vol   /GFS/backup01   glusterfs       defaults,--disable-direct-io-mode       0 0

The above is not correct. The correct entry in /etc/fstab (as of today)is 

/etc/glusterfs/mount-backup01-client_repl.vol /GFS/backup01 glusterfs defaults,direct-io-mode=disable 0 0

Regards,

Amar

Amar's suggestion is good if you have the vol definitions on the client.  We have 2 bricks and lots of clients, so it's more convenient to keep the vol config on the bricks.  The fstab entry can then be (in our case)

brick.my.domain:data_scripts /data/scripts   glusterfs  disable-direct-io-mode,noatime  0  0

[aside: We also use dynamic dns to keep "brick.my.domain" up to date.]

In /etc/glusterfs/glusterfsd.vol have something like

volume dir_data_scripts
  type storage/posix
  option directory /gfs/data/scripts/export
end-volume

volume lock_data_scripts
    type features/locks
    subvolumes dir_data_scripts
end-volume

volume export_data_scripts
  type performance/io-threads
  option thread-count 128  # default is 1
  subvolumes lock_data_scripts
end-volume

volume server-tcp
    type protocol/server
    option transport-type tcp
    option transport.socket.nodelay on
    option auth.addr.export_data_scripts.allow *
    option volume-filename.data_scripts /etc/glusterfs/data_scripts.vol
    subvolumes export_data_scripts
end-volume

We then put our client vol config in the file /etc/glusterfs/data_scripts.vol on the bricks.

Ian