From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35145) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W8BuR-0004pv-Sl for qemu-devel@nongnu.org; Tue, 28 Jan 2014 11:53:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W8BuH-00013W-UT for qemu-devel@nongnu.org; Tue, 28 Jan 2014 11:53:11 -0500 Received: from paradis.irqsave.net ([62.212.105.220]:48545) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W8BuH-00012v-Ak for qemu-devel@nongnu.org; Tue, 28 Jan 2014 11:53:01 -0500 From: =?UTF-8?q?Beno=C3=AEt=20Canet?= Date: Tue, 28 Jan 2014 17:52:51 +0100 Message-Id: <1390927974-31325-11-git-send-email-benoit.canet@irqsave.net> In-Reply-To: <1390927974-31325-1-git-send-email-benoit.canet@irqsave.net> References: <1390927974-31325-1-git-send-email-benoit.canet@irqsave.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH V10 10/13] quorum: Add quorum_co_flush(). 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, mreitz@redhat.com From: Beno=C3=AEt Canet Makes a vote to select error if any. Signed-off-by: Benoit Canet --- block/quorum.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index 9b0718b..1b84b07 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -653,12 +653,46 @@ free_exit: return result; } =20 +static coroutine_fn int quorum_co_flush(BlockDriverState *bs) +{ + BDRVQuorumState *s =3D bs->opaque; + QuorumVoteVersion *winner =3D NULL; + QuorumVotes error_votes; + QuorumVoteValue result_value; + int i; + int result =3D 0; + bool error =3D false; + + QLIST_INIT(&error_votes.vote_list); + error_votes.compare =3D quorum_64bits_compare; + + for (i =3D 0; i < s->total; i++) { + result =3D bdrv_co_flush(s->bs[i]); + if (result) { + error =3D true; + result_value.l =3D result; + quorum_count_vote(&error_votes, &result_value, i); + } + } + + if (error) { + winner =3D quorum_get_vote_winner(&error_votes); + result =3D winner->value.l; + } + + quorum_free_vote_list(&error_votes); + + return result; +} + static BlockDriver bdrv_quorum =3D { .format_name =3D "quorum", .protocol_name =3D "quorum", =20 .instance_size =3D sizeof(BDRVQuorumState), =20 + .bdrv_co_flush_to_disk =3D quorum_co_flush, + .bdrv_getlength =3D quorum_getlength, =20 .bdrv_aio_readv =3D quorum_aio_readv, --=20 1.8.3.2