From mboxrd@z Thu Jan 1 00:00:00 1970 From: mdw-Jp3n8lUXroRWk0Htik3J/w@public.gmane.org Subject: Re: Intel 520/530 SSD for ceph Date: Wed, 20 Nov 2013 19:29:36 -0500 Message-ID: <20131121002936.GA15558@soma.private.linuxbox.com> References: <528A1862.7010601@profihost.ag> <20131118225146.GA1043@soma.private.linuxbox.com> <528B1B21.1060203@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <528B1B21.1060203-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ceph-users-bounces-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org Sender: ceph-users-bounces-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org To: Stefan Priebe Cc: "ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org" List-Id: ceph-devel.vger.kernel.org On Tue, Nov 19, 2013 at 09:02:41AM +0100, Stefan Priebe wrote: ... > >You might be able to vary this behavior by experimenting with sdparm, > >smartctl or other tools, or possibly with different microcode in the drive. > Which values or which settings do you think of? ... Off-hand, I don't know. Probably the first thing would be to compare the configuration of your 520 & 530; anything that's different is certainly worth investigating. This should display all pages, sdparm --all --long /dev/sdX the 520 only appears to have 3 pages, which can be fetched directly w/ sdparm --page=ca --long /dev/sdX sdparm --page=co --long /dev/sdX sdparm --page=rw --long /dev/sdX The sample machine I'm looking has an intel 520, and on ours, most options show as 0 except for AWRE 1 [cha: n, def: 1] Automatic write reallocation enabled WCE 1 [cha: y, def: 1] Write cache enable DRA 1 [cha: n, def: 1] Disable read ahead GLTSD 1 [cha: n, def: 1] Global logging target save disable BTP -1 [cha: n, def: -1] Busy timeout period (100us) ESTCT 30 [cha: n, def: 30] Extended self test completion time (sec) Perhaps that's an interesting data point to compare with yours. Figuring out if you have up-to-date intel firmware appears to require burning and running an iso image from https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18455 The results of sdparm --page= --long /dev/sdc show the intel firmware, but this labels it better: smartctl -i /dev/sdc Our 520 has firmware "400i" loaded. -Marcus Watts