[Gluster-users] Need a quick answer on "Distributed Replicated Storage" questions

[Shehjar Tikoo]

Liam Slusser wrote:
> Thanks for the update Anand.
> 
> Funny you mention unfs3.  Just today one of our engineers at work setup 
> unfs3 against our large production gluster cluster and, so far, it has 
> been very good.  I just was reading up on your modified booster version 
> and will also give that a try also.
> 
> I'm looking forward to testing out the modified unfs3 and the native nfs 
> protocol translator!
> 
I'd suggest waiting till Jun 23-24 for 2.0.3 to come out. That has all 
the improvements/fixes to booster and libglusterfsclient, in order
to get unfs3 to work properly.

-Shehjar


> Thanks!
> 
> ls
> 
> On Thu, Jun 18, 2009 at 1:36 AM, Anand Babu <ab at gluster.com 
> <mailto:ab at gluster.com>> wrote:
> 
>     We made good progress with unfs3 integration using booster model.
>     GlusterFS
>     and unfs3 (modified version) will run in single address space using
>     booster library.
>     This feature is scheduled for 2.1. We will try to have a pre-release
>     available
>     soon (in weeks). GlusterFS v2.2 will have a native NFS protocol
>     translator.
> 
>     iSCSI exporting requires mmap support. You can create image files
>     and losetup them
>     as devices. Then it will be possible to export as iSCSI volumes. We
>     just fixed
>     a bug that caused poor mmap write performance. Work is on the way.
>     We will keep
>     you updated.
> 
>     --
>     Anand Babu Periasamy
>     GPG Key ID: 0x62E15A31
>     Blog [http://unlocksmith.org]
>     GlusterFS [http://www.gluster.org]
>     GNU/Linux [http://www.gnu.org]
> 
> 
>     Liam Slusser wrote:
> 
>          Jonathan,
>          You can export a Gluster mount via a client with a NFS server
>         however the performance is pretty poor.  As far as i know there
>         is no way to export it with iSCSI.
>          Your best option is to use a single/dual Linux/Solaris iscsi
>         server to boot strap all your systems in xenServer and then use
>         Gluster and fuse to mount your /data drive once the system is up
>         and running.
>          liam
> 
>         On Mon, Jun 15, 2009 at 5:15 PM, Jonathan Bayles
>         <jbayles at readytechs.com <mailto:jbayles at readytechs.com>
>         <mailto:jbayles at readytechs.com <mailto:jbayles at readytechs.com>>>
>         wrote:
> 
>            Hi all,
> 
>            I am attempting to prevent my company from having to buy a SAN to
>            backend our virtualization platform(xenServer). Right now we
>         have a
>            light workload and 4 dell 2950's (6disks, 1 controller each) to
>            leverage against the storage side. I like what I see in regard to
>            the "Distributed Replicated Storage" where you essentially
>         create a
>            RAID 10 of bricks. This would work very well for me. The question
>            is, how do I serve this storage paradigm to a front end that's
>            expecting an NFS share or an iSCSI target? Does gluster
>         enable me to
>            access the entire cluster from a single IP? Or is it something I
>            could run on a centos cluster (luci and ricci) and use the
>         cluster
>            suite to present the glustered file system in the form of an
>         NFS share?
> 
>            Let me back up and state my needs/assumptions:
> 
>            * A storage cluster with the capacity equal to at least 1
>            node(assuming all nodes are the same).
> 
>            * I need to be able to lose/take down any one brick in the
>         cluster
>            at any time without a loss of data.
> 
>            * I need more than the throughput of a single server, if not in
>            overall speed, then in width.
> 
>            * I need to be able to add more bricks in and have the
>         expectation
>            of increased storage capacity and throughput.
> 
>            * I need to present the storage as a single entity as an NFS
>         share
>            or a iSCSI target.
> 
>            If there are any existing models out there please point me
>         too them,
>            I don't mind doing the work I just don't want to re-invent the
>            wheel. Thanks in advance for your time and effort, I know
>         what its
>            like to have to answer newbie questions!
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