[Dovecot] dovecot Digest, Vol 93, Issue 41

[Stan Hoeppner]

Alan Brown put forth on 1/18/2011 10:22 AM:
>> From: Stan Hoeppner <stan at hardwarefreak.com>
>> Subject: Re: [Dovecot] SSD drives are really fast running Dovecot
>>
>>
>> Yes.  Go with a cluster filesystem such as OCFS or GFS2 and an inexpensive SAN
>> storage unit that supports mixed SSD and spinning storage such as the Nexsan
>> SATABoy with 2GB cache:  http://www.nexsan.com/sataboy.php
> 
> I can't speak for OCFS2, but after several years' experience with the filesystem
> I strongly recommend NOT using GFS/GFS2. Its locking model is incredibly slow
> (500 locks/second on a filesystem mounted with quotas enabled and noatime) and
> results in dire performance - plus there's a known crash vulnerability if files
> are repeatedly renamed in large directories (this bites us regularly...)
> 
> GFS2 isn't an "enterprise" filesystem by any stretch of the imagination, despite
> what a number of enthusiastic salespeople might try to convince you of. We're
> lucky to keep the GFS servers up for more than a week at a time.

What reliable performant cluster filesystem would you recommend Alan?  Or would
you recommend NFS instead?  NetApp?  BlueArc?

-- 
Stan