[Gluster-devel] Problem with clients that goes down..
Krishna Srinivas
krishna at zresearch.com
Mon Apr 21 11:52:45 UTC 2008
Guido,
I have replied you in the other thread...let us continue
with Antonio's problem on this thread..
Krishna
On Mon, Apr 21, 2008 at 5:04 PM, Guido Smit <guido at comlog.nl> wrote:
> Krishna,
>
> The problem Antonio describes looks like the same problem I and Daniel
> described.
>
> Unplugging one of the servers makes the whole cluster hang. I'm also still
> trying to figure
> out what the problem exactly is. I've tried it without the unify
> translator, but on my cluster,
> there is still a problem with the rest of the clients. They are not
> blocked, but I get a message that
> the mountpoint is not connected (transport endpoint is not connected).
>
>
>
>
>
>
>
>
> Krishna Srinivas wrote:
>
> > Hi Antonio,
> >
> > Excuse us, somehow your issue was not responded to.
> >
> > If I understand correctly, you are facing two problems:
> > 1) plugging out the cable on one client will make other clients hang
> > 2) the timeout value you specify in spec file does not reflect
> > in the actual timeout you see when you access glusterfs.
> >
> > Is that correct? I have lost track of your setup details. Searching mail
> > archives did not give me the exact picture. Can you give the setup
> > details with config files? And also the tests?
> >
> > Surely the problem you are facing should be fixed.
> >
> > Regards
> > Krishna
> >
> >
> > On Mon, Apr 21, 2008 at 3:58 PM, Antonio González
> > <antonio.gonzalez at libera.net> wrote:
> >
> >
> > > 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
> > > blocked).
> > >
> > >
> > >
> > > 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? .
> > >
> > >
> > >
> > > Thanks,
> > >
> > > _______________________________________________
> > > Gluster-devel mailing list
> > > Gluster-devel at nongnu.org
> > > http://lists.nongnu.org/mailman/listinfo/gluster-devel
> > >
> > >
> > >
> >
> >
> > _______________________________________________
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> > Gluster-devel at nongnu.org
> > http://lists.nongnu.org/mailman/listinfo/gluster-devel
> >
> >
> >
> >
>
> --
> Met vriendelijke groet,
>
> Guido Smit
> ComLog B.V.
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