[Gluster-users] Performance and redundancy help

[Smart Weblications GmbH - Florian Wiessner]

Hi,

Am 16.02.2010 01:58, schrieb Chad:
> I am new to glusterfs, and this list, please let me know if I have made
> any mistakes in posting this to the list.
> I am not sure what your standards are.
> 
> I came across glusterfs last week, it was super easy to set-up and test
> and is almost exactly what I want/need.
> I set up 2 "glusterfs servers" that serve up a mirrored raid5 disk
> partitioned into 3 5oogb partitions to 6 clients.
> I am using round robin DNS, but I also tried to use heartbeat and
> ldirectord (see details below).
> Each server has 2 NICs: 1 for the clients, the other has a cross over
> cable connecting the 2 servers. Both NICs are 1000mbps.
> 
> There are only 2 issues.
> #1. When one of the servers goes down the clients hang at least for a
> little while (more testing is needed) I am not sure if the clients can
> recover at all.
> #2. The read/write tests I performed came in at 1.6 when using
> glusterfs, NFS on all the same machines came in at 11, and a direct test
> on the data server came
> in at 111. How do I improve the performance?
> 

please share your vol-files. i don't understand why you would need loadbalancers.

> ###############################################
> My glusterfs set-up:
> 2 supermicro dual Xeon 3.0 ghz CPUs, 8gb ram, 4 @ 750gb seagate sata
> HDs, 3 in raid5 with 1 hot spare. (data servers)

why not use raid10? same capacity, better speed..

> 6 supermicro dual AMD 2.8 ghz CPUs, 4gb ram, 2 @ 250gb seagate sata HDs
> in raid 1. (client machines)
> glusterfs is set-up with round robin DNS to handle the load balancing of
> the 2 data servers.

afaik there is no need to setup dns rr nor loadbalancing for the gluster
servers, glusterfs should take care of that itself. but without your volfiles i
can't give any hints.


-- 

Mit freundlichen Grüßen,

Florian Wiessner

Smart Weblications GmbH
Martinsberger Str. 1
D-95119 Naila

fon.: +49 9282 9638 200
fax.: +49 9282 9638 205
24/7: +49 900 144 000 00 - 0,99 EUR/Min*
http://www.smart-weblications.de

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