From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Support READ CAPACITY 16 on more drives Date: Thu, 12 Mar 2009 14:20:28 -0400 Message-ID: <1236882030-27964-1-git-send-email-willy@linux.intel.com> Return-path: Received: from ottawa-hs-206-191-39-47.d-ip.magma.ca ([206.191.39.47]:38382 "EHLO gonzo.int.wil.cx" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756469AbZCLSa7 (ORCPT ); Thu, 12 Mar 2009 14:30:59 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James.Bottomley@HansenPartnership.com Cc: linux-scsi@vger.kernel.org We need to use READ CAPACITY 16 to determine features like 4k physical sector size, and support for UNMAP. This pair of patches let us try it on really recent SCSI drives and all LibATA drives (where it's emulated by libata so we know they support it). It will not be tried on USB devices, as the USB layer overrides their claims of support for recent SCSI versions.