Fwd: Re: [Gluster-devel] features/mirror resp cluster/automatic-file-replication
krishna.srinivas at gmail.com
Thu Feb 1 14:46:19 UTC 2007
---------- Forwarded message ----------
From: Rainer.Rohmfeld at emuge.de <Rainer.Rohmfeld at emuge.de>
Date: Feb 1, 2007 8:09 PM
Subject: Re: Re: [Gluster-devel] features/mirror resp
To: Krishna Srinivas <krishna.srinivas at gmail.com>
Dear Mr. Srinivas,
we are running a Linux Virtual Server with 9 servers and 2 load
balancers based on keepalived.
Underlying file system is OpenAFS with a replication/failover-handling
based on drbd-heartbeat.
Applications: Tomcat, Twiki, Catalyst/HTML-Mason, MTA (courier), Web
Services (SOAP::Lite), database (MySQL), file serving (CIFS/samba)
We are validating different cluster filesystems to replace OpenAFS due
to its bad write performance.
Backup software should be dirvish (hard links necessary)
gfarm: no automatic replication during write, metadata can become
inconsistent, no hardlinks, good performance
lustre: hard links ok., failover only via heartbeat and iSCSI, bad
performance for grep operations (TWiki), many kernel patches!!!
glusterfs: looks promising, hardlinks, good performancs, easy
administration, good to medium performance for grep (Twiki), overall
good performance, roadmap promising
A failover handling is necessary, because we need a 6x24 availibilty
for our CNC-machines and worldwide locations.
Best Regards / Mit freundlichen Grüßen
EMUGE - Werk Richard Glimpel GmbH & Co. KG
Fabrik für Präzisionswerkzeuge
D-91207 Lauf, Germany
Dr. Rainer Rohmfeld
e-mail: Rainer.Rohmfeld at emuge.de
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