Coda File System

Re: Performance and production environment

From: Casey Helfrich <>
Date: Sun, 3 Mar 2002 10:27:48 -0500 (EST)
Hi Daniel,

I'm actually in the middle of updating the documentation on Coda as we
speak.  Some exciting things are happening with Coda, I want to make sure
that the documentation reflects that.  I'm rewritting a complete HOWTO
series for Coda that reflects reality as of version 5.3.18

I'll be giving this to Jan, and with his blessing it should be available
on the coda website by the end of this month.


P.S. Exciting things == Stable windows Client, 64-bit version supporting
much larger RVMs, fixing issues with client running pre-2.4.12 kernels
with ext3 journaling, etc...

On 3 Mar 2002, Daniel Savard wrote:

> I was interested in Coda since a long time. However, I never found
> enough time to experiment with it and implement it.
> I am now ready to jump in the bandwagon. However, since I haven't keep
> an eye on the project for much time. I would like to know about two
> things:
> 1) In the CODA How-to, which is somewhat old, there is a uppercase
> warning saying CODA is not ready for production environments. After
> searching a reading a little bit from the mailing lists, it seems this
> is not true after two extra years of development. If CODA is ready for
> production, I think the How-to document should be changed or the warning
> should be slightly modified in order to not discourage those who are
> interested to implement it.
> 2) It seems, still from the mailing lists, CODA is very good at
> read-only filesystems and not so good at read-write filesystems. Is
> there anyone who has run some kind of benchmarks to give us a better
> idea of what it means, not good at read-write filesystems? How it
> compares to NFS. I suppose the RVM log is a bottleneck, so is there any
> significant improvements with some specific disks, filesystems layouts?
> Is there any dependancy between bad performance at read-write and the
> number of replicas? In short, someone can shed some light on this
> assumption and give some hints and tips at tuning or planning the Coda
> implementation?
> I think Coda is having all the features I am looking from a network
> filesystem. But I would like to make sure it will meet the requirements
> before investing significant time in its implementation in my
> environment.
> --
> =======================================
> Daniel Savard
> Consultation Informatique Daniel Savard
> 551, boul. Sir-Wilfrid-Laurier
> suite 105
> Beloeil, (Québec)
> Canada J3G 4J1
> Internet:
> =======================================
Received on 2002-03-03 10:28:00