[Ocfs2-users] Cluster setup

[Pavel Georgiev]

How about using just OCFSv2 as I described in my first mail - two servers 
export their storage, the rest of the servers mount it and a failure of any 
of the two storage servers remains transparent to the clients. Can this be 
done with OCFSv2?


On Tuesday 09 October 2007 21:46:15 Alexei_Roudnev wrote:
> You better use
>
>  LVM + heartbeat + NFS + cold failover cluster.
>
> It works 100% stable and is 100% safe from the bugs (and it allows online
> resizing, if your HBA or iSCSI can add lun's on the fly).
>
> Combining NFS + LVM + OCFSv2 can cause many unpredictable problems, esp. on
> the unusual (for OCFSv2) system (such as Ubuntu).
>
> ----- Original Message -----
> From: "Brian Anderson" <banderson at athenahealth.com>
> To: <ocfs2-users at oss.oracle.com>
> Sent: Tuesday, October 09, 2007 11:35 AM
> Subject: RE: [Ocfs2-users] Cluster setup
>
>
>
> Not exactly. I'm in a similar boat right now. I have 3 NFS servers all
> mounting an OCFS2 volume. Each NFS server has its own IP, and the
> clients load balance manually... some mount fs1, others fs2, and the
> rest fs3. In an ideal world, I'd have the NFS cluster presenting a
> single IP, and failing over / load balancing some other way.
>
> I'm looking at NFS v4 as one potential avenue (no single IP, but it does
> let you fail over from 1 server to the next in line), and commercial
> products such as IBRIX.
>
>
>
>
> Brian
>
> > -----Original Message-----
> > From: ocfs2-users-bounces at oss.oracle.com
> > [mailto:ocfs2-users-bounces at oss.oracle.com] On Behalf Of Sunil Mushran
> > Sent: Tuesday, October 09, 2007 2:27 PM
> > To: Luis Freitas
> > Cc: ocfs2-users at oss.oracle.com
> > Subject: Re: [Ocfs2-users] Cluster setup
> >
> > Unsure what you mean.  If the two servers mount the same
> > ocfs2 volume and export them via nfs, isn't that clustered nfs?
> >
> > Luis Freitas wrote:
> > > Is there any cluster NFS solution out there? (Two NFS
> >
> > servers sharing
> >
> > > the same filesystem with distributed locking and failover
> >
> > capability)
> >
> > > Regards,
> > > Luis
> > >
> > > */Sunil Mushran <Sunil.Mushran at oracle.com>/* wrote:
> > >
> > >     Appears what you are looking for is a mix of ocfs2 and nfs.
> > >     The storage servers mount the shared disks and the reexport
> > >     them via nfs to the remaining servers.
> > >
> > >     ubuntu 6.06 is too old. If you are stuck on Ubuntu LTS, the
> > >     next version 7.10 should have all you want.
> > >
> > >     Pavel Georgiev wrote:
> > >     > Hi List,
> > >     >
> > >     > I`m trying to build a cluster storage with commodity
> >
> > hardware in
> >
> > >     a way that
> > >
> > >     > the all the data would be on > 1 server. It should
> >
> > have the meet
> >
> > >     the
> > >
> > >     > following requirements:
> > >     > 1) If one of the servers goes down, the cluster
> >
> > should continue
> >
> > >     to work with
> > >
> > >     > rw access from all clients.
> > >     > 2) Clients that mount the storage should not be part
> >
> > of cluster
> >
> > >     (not export
> > >
> > >     > any disk storage) - I have few servers with huge disks that I
> > >
> > >     want to store
> > >
> > >     > data on (currently 2 servers, maybe more in the future) and I
> > >
> > >     want to
> > >
> > >     > storethe data only on them, the rest of the server should just
> > >
> > >     mount and use
> > >
> > >     > that storage with the ability to continue operation if one of
> > >
> > >     the two storage
> > >
> > >     > servers goes down.
> > >     > 3) More servers should be able to join the cluster
> >
> > and at given
> >
> > >     point,
> > >
> > >     > expanding the total size of the cluster, hopefully without
> > >
> > >     rebuilding the
> > >
> > >     > storage.
> > >     > 4) Load balance is not a issue - all the load can go to one of
> > >
> > >     the two storage
> > >
> > >     > servers (although its better to be balanced), the main goal is
> > >
> > >     to have
> > >
> > >     > redundant storage
> > >     >
> > >     > Does ocfs2 meet these requirements? I read few howtos but none
> > >
> > >     of them
> > >
> > >     > mentioned my second requirement (only some of the servers to
> > >
> > >     hold the data).
> > >
> > >     > Are there any specific steps to do to accomplish (2) and (3)?
> > >     >
> > >     > I`m using Ubuntu 6.06 on x86.
> > >     >
> > >     > Thanks!
> > >     >
> > >     > _______________________________________________
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