Re: [Qemu-devel] [RFC V2 01/10] quorum: Create quorum.c, add QuorumSingleAIOCB and QuorumAIOCB.

[Blue Swirl]

On Tue, Aug 7, 2012 at 1:44 PM, Benoît Canet <address@hidden> wrote:
> Signed-off-by: Benoit Canet <address@hidden>
> ---
>  block/Makefile.objs |    1 +
>  block/quorum.c      |   44 ++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 45 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..046b183
> --- /dev/null
> +++ b/block/quorum.c
> @@ -0,0 +1,44 @@
> +/*
> + * Quorum Block filter
> + *
> + * Copyright (C) Nodalink, SARL. 2012
> + *
> + * Author:
> + *   Benoît Canet <address@hidden>
> + *
> + * 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;
> +    char *buf;

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[3];   /* individual AIOs */
> +    QEMUIOVector qiovs[3];      /* individual IOVs */
> +    int count;                  /* number of completed AIOCB */
> +    bool *finished;             /* completion signal for cancel */
> +
> +    void (*vote)(QuorumAIOCB *acb);
> +    int vote_ret;
> +};
> --
> 1.7.9.5
>