From: Diego Zuccato on
On 12/04/2010 06:21, Robert LeBlanc wrote:

>> Ever heard of glusterfs?
The exact thing I was going to ask :)

> Yes, I don't think it works well in a geography diverse clusters though.
I'll test it soon in a 2-node scenario, where nodes are on separate
networks and max speed is limited by an optical link to about 100Mbps.
Currently NFS shares accessed throught the link are OK (just a bit
slower than local ones -- but we're speaking of two small labs: 10 PCs
in one and 25 in the other). And it adds full replication (instead of
just a cache) "for free", making only the diffs travel throught the slow
link. Maybe it could take a long time after a "split brain" to resync.

Their "appliance" supports exporting as samba share, but I don't know
the granularity and how well it could be integrated in a domain.

Diego Zuccato
Servizi Informatici
Dip. di Astronomia - Università di Bologna
Via Ranzani, 1 - 40126 Bologna - Italy
tel.: +39 051 20 95786
mail: diego.zuccato(a)
To unsubscribe from this list go to the following URL and read the
From: Ravi Channavajhala on
On Mon, Apr 12, 2010 at 7:17 AM, Stan Hoeppner <stan(a)> wrote:
> Robert LeBlanc put forth on 4/11/2010 8:19 PM:
>> On Sun, Apr 11, 2010 at 9:03 AM, ravi channavajhala <
>> ravi.channavajhala(a)> wrote:
>>> WAFS (Wide Area File System) appliances can be very well deployed for this
>>> sort of thing precisely.  Unfortunately, I don't know of any opensource
>>> project for WAFS.  However, commercial solutions such as Riverbed, Expand
>>> Networks, CISCO/WAFS, Juniper/Peribit do exist.
>> So far, this is the direction that we may go. We have looked at a Riverbed
>> product, it's good to know alternatives. This may not be as much of an issue
>> as it was in the past as I believe we my get a network upgrade that will
>> negate the need for this.
> I would think it would be cheaper and more straight forward to replace the
> GbE port on each end of the fiber link with a 10GbE port than to deal with
> the complexity of caching and replication, or other such options, especially
> for two buildings on the same campus.  The fiber link is on campus and thus
> you control any right-of-way issues, correct?

I'd like to know if anyone else thinks this can work as well as a
method with write back caching etc...

To unsubscribe from this list go to the following URL and read the