From owner-svn-src-all@freebsd.org Tue Jul 12 02:57:14 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 91068B912C1; Tue, 12 Jul 2016 02:57:14 +0000 (UTC) (envelope-from sephe@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 43BB91752; Tue, 12 Jul 2016 02:57:14 +0000 (UTC) (envelope-from sephe@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u6C2vDVd005673; Tue, 12 Jul 2016 02:57:13 GMT (envelope-from sephe@FreeBSD.org) Received: (from sephe@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u6C2vD9i005672; Tue, 12 Jul 2016 02:57:13 GMT (envelope-from sephe@FreeBSD.org) Message-Id: <201607120257.u6C2vD9i005672@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: sephe set sender to sephe@FreeBSD.org using -f From: Sepherosa Ziehau Date: Tue, 12 Jul 2016 02:57:13 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r302605 - head/sys/dev/hyperv/storvsc X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jul 2016 02:57:14 -0000 Author: sephe Date: Tue Jul 12 02:57:13 2016 New Revision: 302605 URL: https://svnweb.freebsd.org/changeset/base/302605 Log: hyperv/stor: Save the response status and xfer length properly. The current command response handling discards status and xfer length unconditionally, so that all of the commands would be considered successful, even if errors happened. When errors really happens, this causes all kinds of wiredness, since the buffer will not be filled on the host side and sense data will be ignored. Most of the time, errors do not happen, however, error does happen for the request sent immediately after the disk resizing. Discarding the SCSI status (SCSI_STATUS_CHECK_COND) and sense data (capacity changes) prevents the disk resizing from working properly. This commit saves the response status and xfer length properly for later use. Submitted by: Dexuan Cui Noticed by: sephe MFC after: 3 days Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7181 Modified: head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Modified: head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Tue Jul 12 02:16:48 2016 (r302604) +++ head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Tue Jul 12 02:57:13 2016 (r302605) @@ -805,6 +805,13 @@ hv_storvsc_on_iocompletion(struct storvs vm_srb = &vstor_packet->u.vm_srb; + /* + * Copy some fields of the host's response into the request structure, + * because the fields will be used later in storvsc_io_done(). + */ + request->vstor_packet.u.vm_srb.scsi_status = vm_srb->scsi_status; + request->vstor_packet.u.vm_srb.transfer_len = vm_srb->transfer_len; + if (((vm_srb->scsi_status & 0xFF) == SCSI_STATUS_CHECK_COND) && (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID)) { /* Autosense data available */