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Date: Thu, 27 Mar 2014 11:40:18 +0100
From: Rainer Duffner <rainer@ultra-secure.de>
To: Joar Jegleim <joar.jegleim@gmail.com>
Subject: Re: zfs l2arc warmup
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Am Thu, 27 Mar 2014 08:50:06 +0100
schrieb Joar Jegleim <joar.jegleim@gmail.com>:

> Hi list !
> 
> I struggling to get a clear understanding of how the l2arc get warm
> ( zfs). It's a FreeBSD 9.2-RELEASE server.
> 

> The thing is with this particular pool is that it serves somewhere
> between 20 -> 30 million jpegs for a website. The front page of the
> site will for every reload present a mosaic of about 36 jpegs, and the
> jpegs are completely randomly fetched from the pool.
> I don't know what jpegs will be fetched at any given time, so I'm
> installing about 2TB of l2arc ( the pool is about 1.6TB today) and I
> want the whole pool to be available from the l2arc .
> 
> 
> Any input on my 'rsync solution' to warmup the l2arc is much
> appreciated :)
> 
> 



Don't you need RAM for the L2ARC, too?

http://www.richardelling.com/Home/scripts-and-programs-1/l2arc


I'd just max-out the RAM on the DL370 - you'd need to do that anyway,
according to the above spread-sheet....