diff mbox

[V13,02/13] quorum: Create BDRVQuorumState and BlkDriver and do init.

Message ID 1391443352-6386-3-git-send-email-benoit.canet@irqsave.net
State New
Headers show

Commit Message

Benoît Canet Feb. 3, 2014, 4:02 p.m. UTC 
From: Benoît Canet <benoit@irqsave.net>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 block/quorum.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
diff mbox

Patch

diff --git a/block/quorum.c b/block/quorum.c
index 17695d6..157efdf 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -15,6 +15,16 @@ 
 
 #include "block/block_int.h"
 
+/* the following structure holds 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 occurs.
+                            */
+    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 operation it
@@ -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);