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[Qemu-devel] [RFC V2 09/10] quorum: Add quorum_aio_readv.
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC V2 09/10] quorum: Add quorum_aio_readv. |
Date: |
Tue, 7 Aug 2012 15:44:32 +0200 |
Signed-off-by: Benoit Canet <address@hidden>
---
block/quorum.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index 2df3ae6..13804c1 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -174,6 +174,14 @@ static int quorum_check_ret(QuorumAIOCB *acb)
static void quorum_aio_bh(void *opaque)
{
QuorumAIOCB *acb = opaque;
+ int i;
+
+ for (i = 0; i <= 2; i++) {
+ if (acb->aios[i].buf) {
+ g_free(acb->aios[i].buf);
+ acb->aios[i].buf = NULL;
+ }
+ }
qemu_bh_delete(acb->bh);
acb->common.cb(acb->common.opaque, quorum_check_ret(acb));
@@ -224,6 +232,32 @@ static void quorum_aio_cb(void *opaque, int ret)
}
}
+static BlockDriverAIOCB *quorum_aio_readv(BlockDriverState *bs,
+ int64_t sector_num,
+ QEMUIOVector *qiov,
+ int nb_sectors,
+ BlockDriverCompletionFunc *cb,
+ void *opaque)
+{
+ BDRVQuorumState *s = bs->opaque;
+ QuorumAIOCB *acb = quorum_aio_get(bs, qiov, sector_num,
+ nb_sectors, cb, opaque);
+ int i;
+
+ for (i = 0; i <= 2; i++) {
+ acb->aios[i].buf = qemu_blockalign(bs->file, qiov->size);
+ qemu_iovec_init(&acb->qiovs[i], qiov->niov);
+ blkverify_iovec_clone(&acb->qiovs[i], qiov, acb->aios[i].buf);
+ }
+
+ for (i = 0; i <= 2; i++) {
+ bdrv_aio_readv(s->bs[i], sector_num, qiov, nb_sectors,
+ quorum_aio_cb, &acb->aios[i]);
+ }
+
+ return &acb->common;
+}
+
static BlockDriverAIOCB *quorum_aio_writev(BlockDriverState *bs,
int64_t sector_num,
QEMUIOVector *qiov,
@@ -272,6 +306,7 @@ static BlockDriver bdrv_quorum = {
.bdrv_close = quorum_close,
.bdrv_co_flush_to_disk = quorum_co_flush,
+ .bdrv_aio_readv = quorum_aio_readv,
.bdrv_aio_writev = quorum_aio_writev,
};
--
1.7.9.5
[Qemu-devel] [RFC V2 09/10] quorum: Add quorum_aio_readv.,
Benoît Canet <=
[Qemu-devel] [RFC V2 07/10] blkverify: Make blkverify_iovec_clone() and blkverify_iovec_compare() public, Benoît Canet, 2012/08/07
[Qemu-devel] [RFC V2 10/10] quorum: Add quorum mechanism., Benoît Canet, 2012/08/07
Re: [Qemu-devel] [PATCH 00/10] Quorum disk image corruption resiliency, Stefan Hajnoczi, 2012/08/08