From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:47398) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T1Ht0-0006hf-T0 for qemu-devel@nongnu.org; Tue, 14 Aug 2012 10:14:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T1Hsv-0004MV-Pg for qemu-devel@nongnu.org; Tue, 14 Aug 2012 10:14:22 -0400 Received: from mail-wg0-f53.google.com ([74.125.82.53]:52360) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T1Hsv-0004MI-IP for qemu-devel@nongnu.org; Tue, 14 Aug 2012 10:14:17 -0400 Received: by wgbfm10 with SMTP id fm10so333183wgb.10 for ; Tue, 14 Aug 2012 07:14:16 -0700 (PDT) From: "=?UTF-8?q?Beno=C3=AEt=20Canet?=" Date: Tue, 14 Aug 2012 16:14:03 +0200 Message-Id: <1344953651-16622-2-git-send-email-benoit@irqsave.net> In-Reply-To: <1344953651-16622-1-git-send-email-benoit@irqsave.net> References: <1344953651-16622-1-git-send-email-benoit@irqsave.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] =?utf-8?q?=5BRFC_V3_1/9=5D_quorum=3A_Create_quorum?= =?utf-8?q?=2Ec=2C_add_QuorumSingleAIOCB_and_QuorumAIOCB=2E?= List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@linux.vnet.ibm.com, blauwirbel@gmail.com, anthony@codemonkey.ws, pbonzini@redhat.com, eblake@redhat.com, afaerber@suse.de, =?UTF-8?q?Beno=C3=AEt=20Canet?= Signed-off-by: Benoit Canet --- block/Makefile.objs | 1 + block/quorum.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 block/quorum.c diff --git a/block/Makefile.objs b/block/Makefile.objs index b5754d3..66af6dc 100644 --- a/block/Makefile.objs +++ b/block/Makefile.objs @@ -4,6 +4,7 @@ block-obj-y += qed.o qed-gencb.o qed-l2-cache.o qed-table.o qed-cluster.o block-obj-y += qed-check.o block-obj-y += parallels.o nbd.o blkdebug.o sheepdog.o blkverify.o block-obj-y += stream.o +block-obj-y += quorum.o block-obj-$(CONFIG_WIN32) += raw-win32.o block-obj-$(CONFIG_POSIX) += raw-posix.o block-obj-$(CONFIG_LIBISCSI) += iscsi.o diff --git a/block/quorum.c b/block/quorum.c new file mode 100644 index 0000000..65a6b55 --- /dev/null +++ b/block/quorum.c @@ -0,0 +1,45 @@ +/* + * Quorum Block filter + * + * Copyright (C) 2012 Nodalink, SARL. + * + * Author: + * Benoît Canet + * + * Based on the design and code of blkverify.c (Copyright (C) 2010 IBM, Corp) + * and blkmirror.c (Copyright (C) 2011 Red Hat, Inc). + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "block_int.h" + +typedef struct QuorumAIOCB QuorumAIOCB; + +typedef struct QuorumSingleAIOCB { + BlockDriverAIOCB *aiocb; + uint8_t *buf; + int ret; + QuorumAIOCB *parent; +} QuorumSingleAIOCB; + +struct QuorumAIOCB { + BlockDriverAIOCB common; + QEMUBH *bh; + + /* Request metadata */ + int64_t sector_num; + int nb_sectors; + + QEMUIOVector *qiov; /* calling readv IOV */ + + QuorumSingleAIOCB *aios; /* individual AIOs */ + QEMUIOVector *qiovs; /* individual IOVs */ + int count; /* number of completed AIOCB */ + int success_count; /* number of successfully completed AIOCB */ + bool *finished; /* completion signal for cancel */ + + void (*vote)(QuorumAIOCB *acb); + int vote_ret; +}; -- 1.7.9.5