Re: SLES 9 SP4 and OCFS2

Igor Ushkalo   [16.01.2008 09:30]:
> Hi, Werner!
> We're running OEBS and also needed shared FS for few nodes (4-8).
> We tested a lot of different stuff and decided to use NFS.
> As for me, this solution is rock-solid stable and simple to implement,
> in comparison with glutched ocfs and others.
> It could be even fault-tolerant via failofer cluster
> (we're using HP ServiceGuard for this).
> 
> Let me know if you need some detailed info.
> Regards,
> Igor.
> 
> -- Best regards, Igor Ushkalo (igorus!) - igorus(at)mail.ru, ICQ #19972198
> 

Hi Igor,

it's exactly NFS that we use now and what we want to replace. I do not
have a failover cluster for NFS, so any reboot of the NFS host may (or
may not) take down the other systems.

The reason for us to replace NFS is the data throughput. When I use eg.
rsync to copy data from one machine to another (using the IP addresses
that are used to share the NFS), I have a data throughput of about 12
MB/s (same switch). The same data transferred via NFS uses a throughput
of 150 KB/s. It is *very* slow. Copying data to OCFS2 is very fast (~ 80
MB/s), since all systems are connected to the RAID via FC :-)

Regards,
Werner

-- 
Werner Flamme, Abt. WKDV
Helmholtz-Zentrum fÃŒr Umweltforschung GmbH - UFZ
Permoserstr. 15 - 04318 Leipzig
Tel.: (0341) 235-1921 - Fax (0341) 235-451921
http://www.ufz.de - eMail: [email protected]

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