[Gluster-users] Storage Cluster Question

[Mickey Mazarick]

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

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.

-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
>
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