[Gluster-users] Storage Cluster Question
francisco.cabrita at gmail.com
Tue Jun 30 10:18:56 UTC 2009
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:
This is a very interesting topic. I would also appreciate ML feedback on
> 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
> 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:
>>> That was quite nice across 8 servers for Quicktime files (average file
>>> 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
>> 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
> Gluster-users mailing list
> Gluster-users at gluster.org
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