Distributed File Systems

[David Chait]

Lawrence,
    If Cyrus does not opperate properly within an AFS environment, what does
CMU use as a storage solution? I can only assume it's not directly attached
storage considering the sheer mass of data involved.

----- Original Message -----
From: "Lawrence Greenfield" <leg+ at andrew.cmu.edu>
To: "Josh Huber" <huber+keyword+cyrus.b8df14 at alum.wpi.edu>
Cc: <info-cyrus at lists.andrew.cmu.edu>
Sent: Monday, October 21, 2002 10:18 AM
Subject: Re: Distributed File Systems


>    Date: Mon, 21 Oct 2002 11:28:41 -0400
>    From: Josh Huber <huber+keyword+cyrus.b8df14 at alum.wpi.edu>
>
>    "David Chait" <davidc at bonair.stanford.edu> writes:
>
>    > Both CODA and AFS were developed at CMU, and I would be very
>    > interrested in hearing their thoughts as well.
>
>    Indeed, does someone have an answer for this question?  Everyone seems
>    to be avoiding it :)
>
>    Can Cyrus handle storing mailboxes to an AFS drive?
>
> No. CMU's previous e-mail system, AMS, leveraged AFS extensively for
> storage (and transit) purposes. For various reasons it didn't scale
> particularly well and led to CMU's interest in IMAP.
>
> Cyrus was designed to use a local filesystem with Unix semantics and a
> working mmap()/write() combination. AFS doesn't provide these
> semantics so won't work correctly.
>
> Larry
>
>