From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: optimal io size / custom alignment Date: Sat, 20 Jun 2015 20:12:43 -0400 Message-ID: References: <20150615133154.GV1992@ws.net.home> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: (Tom Yan's message of "Sun, 21 Jun 2015 00:01:34 +0800") Sender: util-linux-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Tom Yan Cc: "Martin K. Petersen" , linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Karel Zak , util-linux-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-scsi@vger.kernel.org >>>>> "Tom" == Tom Yan writes: Tom> I know they all use VPDs, but the main point is whether those Tom> hardware RAIDs or so are handled by sd_mod, and whether those Tom> "transfer lengths" info are still important when it's just a simple Tom> drive. To me they look like to be of different nature. We don't know whether a discovered device is "a simple drive". And once again: The whole point of the queue limit is to have an common abstraction for all block devices. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe util-linux" in