From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id A2E2C7F47 for ; Sat, 24 Oct 2015 00:39:08 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay3.corp.sgi.com (Postfix) with ESMTP id 27A18AC001 for ; Fri, 23 Oct 2015 22:39:04 -0700 (PDT) Received: from posta3.euchiamail.it (posta3.euchiamail.it [46.30.241.112]) by cuda.sgi.com with ESMTP id kL68QVGnCQCrLzCp (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 23 Oct 2015 22:39:01 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by posta3.euchiamail.it (Postfix) with ESMTP id 12FDA7E5FA6 for ; Sat, 24 Oct 2015 07:38:57 +0200 (CEST) Received: from posta3.euchiamail.it ([127.0.0.1]) by localhost (sufferone.euchiamail.it [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dGx3xLSuMjc8 for ; Sat, 24 Oct 2015 07:38:54 +0200 (CEST) Received: from linux (2-227-160-98.ip186.fastwebnet.it [2.227.160.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by posta3.euchiamail.it (Postfix) with ESMTPSA id 011A87E5FA5 for ; Sat, 24 Oct 2015 07:38:52 +0200 (CEST) Date: Sat, 24 Oct 2015 07:38:57 +0200 From: "krautus@kr916.org" Subject: Re: hdd + ssd Message-ID: <20151024073857.6a77ee5f@linux> In-Reply-To: References: <20151022202324.5f00807f@linux> <20151023134805.3c7998e4@harpe.intellique.com> MIME-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com Cc: Linux fs XFS Thank you all for the suggestions! I'll report back my progress, will take a while .. :) Bye and have a nice week-end, Mike On Fri, 23 Oct 2015 23:34:00 +0200 Stefan Ring wrote: > On Fri, Oct 23, 2015 at 1:48 PM, Emmanuel Florac wrote: > > YMMV, but here's my take: > > > > * flashcache being a facebook internal dev, probably is the most > > largely deployed one. It's clearly production-ready. > > > > * EnhanceIO works fine but I haven't tested it thoroughly. It adds no > > signature to the drives so it can be added to existing filesystems > > (flashcache and bcache need reformatting). However that means that > > bad thing may happen if you're careless -- it's clearly targeted at > > always-on servers. > > > > * bcache works fine but the latest fixes haven't been backported, so > > you should probably use it only with latest (4.2, 4.3) kernels. It's > > not very mature yet but it's *friggin' fast*. > > > > * dm-cache is the easiest to set-up with the lvmcache command (if your > > distro is recent enough of course). Like very very easy. It's > > unfortunately the slowest of the pack, apparently. Doesn't need > > reformatting IF your existing FS already lives in a LV. > > Very good summary, thanks! Do you also happen to know if all of these > retain cache contents across reboots? _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs