From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55680) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VRLiU-0006F1-Ko for qemu-devel@nongnu.org; Wed, 02 Oct 2013 08:39:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VRLiP-00075F-Gd for qemu-devel@nongnu.org; Wed, 02 Oct 2013 08:39:46 -0400 Received: from nodalink.pck.nerim.net ([62.212.105.220]:42235 helo=paradis.irqsave.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VRLiP-000755-6p for qemu-devel@nongnu.org; Wed, 02 Oct 2013 08:39:41 -0400 From: =?UTF-8?q?Beno=C3=AEt=20Canet?= Date: Wed, 2 Oct 2013 14:39:15 +0200 Message-Id: <1380717564-11098-3-git-send-email-benoit@irqsave.net> In-Reply-To: <1380717564-11098-1-git-send-email-benoit@irqsave.net> References: <1380717564-11098-1-git-send-email-benoit@irqsave.net> Subject: [Qemu-devel] [PATCH V9 02/11] quorum: Create BDRVQuorumState and BlkDriver and do init. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@redhat.com Signed-off-by: Benoit Canet --- block/quorum.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index 76a1fbb..9557e61 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -15,6 +15,16 @@ #include "block/block_int.h" +/* the following structure hold the state of one quorum instance */ +typedef struct { + BlockDriverState *bs; /* children BlockDriverStates */ + int total; /* children count */ + int threshold; /* if less than threshold children reads gave the same + * result a quorum error occur. + */ + bool is_blkverify; /* true if the driver is in blkverify mode */ +} BDRVQuorumState; + typedef struct QuorumAIOCB QuorumAIOCB; /* Quorum will create one instance of the following structure per read/write @@ -37,6 +47,7 @@ typedef struct QuorumSingleAIOCB { */ struct QuorumAIOCB { BlockDriverAIOCB common; + BDRVQuorumState *bqs; /* Request metadata */ uint64_t sector_num; @@ -52,3 +63,17 @@ struct QuorumAIOCB { bool is_read; int vote_ret; }; + +static BlockDriver bdrv_quorum = { + .format_name = "quorum", + .protocol_name = "quorum", + + .instance_size = sizeof(BDRVQuorumState), +}; + +static void bdrv_quorum_init(void) +{ + bdrv_register(&bdrv_quorum); +} + +block_init(bdrv_quorum_init); -- 1.8.1.2