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[Gluster-devel] Problem with clients that goes down..

From: Antonio González
Subject: [Gluster-devel] Problem with clients that goes down..
Date: Mon, 21 Apr 2008 12:28:02 +0200

Hello all, 


I have made a lot of tests over GlusterFS to verify his viability. I wrote
at this list one or two weeks ago asking about an issue with clients that
goes down and causes problems with other clients that can not access to the
Gluster file system. 


Are the developers of GlusterFS noticed about this issue?  I think that is a
serious problem and I need an answer to advice or not the use of GlusterFS
in a project.   


I proved this issue over several scenarios (AFR/unify at server side, client
side, without AFR…), and I think that the problem is the unify translator.
I made a test with one server and two clients. Without unify translator
works fine, a client who goes down while reads or copy a file, don’t affect
other clients. With the unify translator, if a client who reads/writes file
goes down causes the problem (other clients that tries an “ls” command are


I made a test with two servers (without AFR, unify at client side), I have
localized files in each server, I try to block one server and access to a
file in the other server (cp command). I can see that the access to this
server (no blocked) is in function of the timeout option. If I don’t set
timeout, the client takes 2 or 3 minutes and not finishes the command. If I
set a timeout of 20 sec the client takes 32 sec and finishes the command.
For a timeout of 40 s. the client takes 60 sec approximately. 



I would like to know at least if this problem is recognized by the
developers of Gluster. They know which is problem?  They working to solve
it? .



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