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List:       gluster-users
Subject:    [Gluster-users] Storage Cluster Question
From:       francisco.cabrita () gmail ! com (Francisco Cabrita)
Date:       2009-06-30 10:18:56
Message-ID: ba4aa9cb0906300318w37797577uc3eeff1e5218c609 () mail ! gmail ! com
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On Mon, Jun 29, 2009 at 11:37 PM, Mickey Mazarick <mic at digitaltadpole.com>wrote:

> Have you seen a distributed parallel fault tolerant file system that
> doesn't take a serious hit doing mmaps or direct io?
> This is a serious question, I've installed luster to contrast recently and
> it didn't measure up but I'm wondering what other DPFT filers anyone has
> tried and for what applications?
> The wiki list is here:
> http://en.wikipedia.org/wiki/List_of_file_systems#Distributed_parallel_fault_tolerant_file_systems
> 


This is a very interesting topic. I would also appreciate ML feedback on
this.


> 
> <http://en.wikipedia.org/wiki/List_of_file_systems#Distributed_parallel_fault_tolerant_file_systems>
>  
> Can anyone give a positive or negative on any of these? Perhaps we can use
> some of the positives of others to drive gluster development.


Well,  it's not listed there and in fact I don't know if I could add this to
that DPFT list, but on FreeBSD we have a interesting framework to handle
Devices, GEOM: Modular Disk Transformation Framework [
http://www.freebsd.org/doc/en/books/handbook/geom.html ] above this I can
add "geoms". In this Distributed scenario I can plan to have a base GEOM
with a bunch of distributed disks agregated via GEOM GGATE and above that
some RAID0 or so.
I have a very positive impressions about this. Friends are using this in
production.

Francisco


> 
> 
> -Mic
> 
> 
> Nathan Stratton wrote:
> 
> > On Mon, 29 Jun 2009, Todd Daugherty wrote:
> > 
> > I have not used it in production yet but I did a test with:
> > > http://gluster.org/docs/index.php/Translators/cluster/stripe
> > > 
> > > That was quite nice across 8 servers for Quicktime files (average file
> > > 1GB).
> > > 
> > > Why would you say no to Xen VM files?
> > > 
> > 
> > Because with xen you need to --disable-direct-io-mode to get it to work
> > and that kills performance.
> > 
> > Raw disk:
> > 8589934592 bytes (8.6 GB) copied, 21.0523 seconds, 408 MB/s
> > 
> > Gluster:
> > 8589934592 bytes (8.6 GB) copied, 47.4356 seconds, 181 MB/s
> > 
> > Gluster --disable-direct-io-mode
> > 8589934592 bytes (8.6 GB) copied, 336.514 seconds, 25.5 MB/
> > 
> > 
> > <>
> > > 
> > Nathan Stratton                                CTO, BlinkMind, Inc.
> > nathan at robotics.net                         nathan at blinkmind.com
> > http://www.robotics.net                        http://www.blinkmind.com
> > 
> > _______________________________________________
> > Gluster-users mailing list
> > Gluster-users at gluster.org
> > http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users
> > 
> 
> 
> 
> 
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> 



-- 
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http://www.linkedin.com/in/franciscocabrita
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