Signed-off-by: Benoit Canet <[email protected]> --- 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 <[email protected]> + * + * 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; + 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
