Hello to all,
I'm currently testing glusterfs ( version 3.1.4, 3.1.6, 3.2.2, 3.2.3 and 3.3beta ) for the following
situation / behavior:
I want to create a replicated storage via internet / wan with two storage nodes.
The first node is located in office A and the other one is in office B.
If I try to write a file to the mounted glusterfs (mounted via glusterfs or nfs), the write
performance is as poor as the upload speed (~ 1 mbit - adjusted manually using "tc").
I tested several cache-options (see below) with the following effect:
The copy process of a file is done very fast (~40 mbyte/sec), but the application (rsync, mc copy,
cp) is waiting at 100% for the final sync of the storage. The process is not finished before
glusterfs has written the file to the 2nd node.
The behavior I am looking for is to store files locally first and then sync the content to the
second node in the background.
Is there a way for this?
******************************************************************
volume info:
Volume Name: gl5
Type: Replicate
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: 192.168.42.130:/gl5
Brick2: 192.168.42.7:/gl5
Options Reconfigured:
nfs.disable: off
nfs.trusted-sync: on
nfs.trusted-write: on
performance.flush-behind: off
performance.write-behind-window-size: 200MB
performance.cache-max-file-size: 200MB
******************************************************************
tested mount options:
mount.nfs 127.0.0.1:gl5 /mnt/gluster/ -v -o mountproto=tcp -o async
mount -t glusterfs 127.0.0.1:gl5 /mnt/gluster -o async
Thanks a lot,
Christian
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