Large-scale production installations, and another question

Jared Klett jared at
Tue Jul 1 18:17:14 UTC 2008

hi mike,

	We've been using MogileFS for about a year and half now at

	We have nearly 20 storage nodes with 130 TB of storage (we use a
device count of two since we're dealing with files anywhere up to 1 GB),
and 2.81 million files.

	I'd be happy to provide more detail if you wish.


- Jared

Jared Klett
office: 917.546.6989 x2002
mobile: 646.526.8948
aol im: JaredAtWrok

-----Original Message-----
From: mogilefs-bounces at
[mailto:mogilefs-bounces at] On Behalf Of mike
Sent: Sunday, June 29, 2008 3:46 AM
To: mogilefs at
Subject: Large-scale production installations, and another question

Two parter:

1) Other than Danga properties like LJ, are there other sites using
MogileFS in production? It'd be cool to see a list/stats (how many
machines, files, etc, etc)

2) When the client issues the call "Where is file $x?" and it gets back
a list of locations, does the tracker reply back in random order?
Or is it always the same? Is it expected that the client take the list
and randomize them too? Just wondering - if the server always replies
with "$x is on $y" in the same order and the client always picks the
first one, that means one server is being hit more often than the other.
Seems like it would be nice to randomize it (or even smarter adding in
some better intelligence based on connections/load/etc, but random is
probably good enough) - I haven't looked at the docs/code about this
specifically but figured someone could answer it pretty quickly.

Thanks a lot :)

- mike

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