[Linux-cluster] Re: Question about Cluster Service

Tue Feb 27 12:14:41 UTC 2007

Thanks a lot for replying to my question.
Actually I have to distribute data on my web servers
as
we are using a provisioning software and it just uses
this architecture.
My plan is to setup 2 active servers that do not share
any data , and one passive server which is for both of
them.
Node A ,C    (cluster service 1)
Node B , C   (cluster service 2)
Node c :   (Failover domain 1 : service 1,failover
domain2: service 2)
I want to setup GFS between A,C  and another pair B,C
My main question is whether I should use GFS or not ?
I am confused about whether I should use GFS when I am
using High availability service management from
Cluster suite.

--Regards.
Sara

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> Today's Topics:
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>    1. Re: Question about Cluster Service (Filipe
> Miranda)
>    2. Re: Problem running GFS on top of AoE
> (Shailesh)
>    3. Re: data and machine dependent NFS GFS file
> xfer	problem
>       (Keith Lewis)
>    4. Re: data and machine dependent NFS GFS file
> xfer	problem
>       (Robert Peterson)
>    5. Re: Running GFS as local file system (Jonathan
> E Brassow)
> 
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>
----------------------------------------------------------------------
> 
> Message: 1
> Date: Sun, 25 Feb 2007 20:19:52 -0300
> From: "Filipe Miranda" <filipe.miranda at gmail.com>
> Subject: Re: [Linux-cluster] Question about Cluster
> Service
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> 
>
<a6d13c780702251519g3255e3b3le719a490ee6a1814 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Hi there Sodagar,
> 
> Will the Web servers present the same data? will
> they serve the same
> content?
> Why not use all three servers active (without the
> fail-over mode) and just
> add a layer of load balancing to the top of this
> solution (two machines with
> IPVS?
> 
> About the GFS, it is a file system that handles
> multiple servers accessing
> the same data on the same partition.
> If the Web servers are presenting the same data to
> users, GFS will be very
> helpful to avoid data redundancy on the storage.
> 
> If you do not have a dedicated storage GNBD and
> ISCSI are good choices.
> 
> Regards,
> 
> 
> 
> 
> On 2/25/07, sara sodagar <sara_sodagar at yahoo.com>
> wrote:
> >
> > Hi
> > I would be grateful if anyone could tell me if
> this
> > solution works or not?
> > I am planning to use Web server cluster.I have 2
> > active
> > servers and 1 passive server .I suppose I should
> > create 2 cluster service as in each cluster
> service
> > there
> > should be 1 active server.
> > As I have only 1 passive server , I should create
> 2
> > fail over domain .
> >
> > ster service comprises : ip address
> resource ,
> > web serviver initNode A ,C    (cluster service 1)
> > Node B , C   (cluster service 2)
> > Node c :   (Failover domain 1 : service 1,
> failover
> > domain2: service 2)
> > Each Clu script,file
> > system resource (gfs)
> > Also I would like to know what are the advantages
> of
> > using gfs in this solution over
> > other types of files systems (like ext3) , as
> there
> > are no 2 active servers writing on the same area
> at
> > the
> > same time.
> >
> >
> > --Regards
> > Sara
> >
> >
> >
> >
> >
>
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> 
> 
> -- 
> ---
> Filipe T Miranda
> Red Hat Certified Engineer
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> ------------------------------
> 
> Message: 2
> Date: Mon, 26 Feb 2007 11:18:34 +0530
> From: Shailesh <shailesh at verismonetworks.com>
> Subject: Re: [Linux-cluster] Problem running GFS on
> top of AoE
> To: linux clustering <linux-cluster at redhat.com>
> Message-ID: <1172468914.6551.135.camel at shailesh>
> Content-Type: text/plain
> 
> > Looks like the eth devices have entered into
> promiscous mode, If 
>   you would have a lot of traffic on the ethernet,
> this could 
>   be a cause of the delay. Try cutting down non-AoE
> traffic.
> 
>   
> Rgds
> Shailesh
> 
> On Fri, 2007-02-23 at 15:34 -0800, Lin Shen (lshen)
> wrote:
> > I'm trying to run GFS on top of AoE on my two-node
> cluster (node A and
> > B). I was using GNBD previously. 
> > 
> > I first exported a partition from A to B using
> vblade via eth1 (the
> > cluster is using eth0 I believe). That seems to
> work as expected. Then,
> > I did a gfs_mkfs on the etherd partition on B, and
> mounted the file
> > system on both A and B. All went as expected. But
> when I write stuff
> > onto the file system on either node, it takes a
> long time (a few
> > minutes) or never for the contents to be
> propagated to the other node.
> > 
> > I saw some abnormal messages in the log, but not
> quite sure what it
> > means. This is from node A, and similar messages
> are also in log from
> > node B. Any ideas? How should I trouble shoot
> this?
> > 
> > Feb 23 11:46:52 cfs2 kernel: GFS: fsid=gfs:aoe.1:
> Joined cluster. Now
> > mounting FS...
> > Feb 23 11:46:52 cfs2 kernel: GFS: fsid=gfs:aoe.1:
> jid=1: Trying to
> > acquire journal lock...
> > Feb 23 11:46:52 cfs2 kernel: GFS: fsid=gfs:aoe.1:
> jid=1: Trying to
> > acquire journal lock...
> > Feb 23 11:46:52 cfs2 kernel: GFS: fsid=gfs:aoe.1:
> jid=1: 
=== message truncated ===

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