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[Qemu-devel] [RFC 10/12] qorum: Add qorum_aio_readv.
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC 10/12] qorum: Add qorum_aio_readv. |
Date: |
Thu, 2 Aug 2012 12:16:42 +0200 |
Signed-off-by: Benoit Canet <address@hidden>
---
block/qorum.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/block/qorum.c b/block/qorum.c
index eeffac2..772d138 100644
--- a/block/qorum.c
+++ b/block/qorum.c
@@ -175,6 +175,14 @@ static int qorum_check_ret(QorumAIOCB *acb)
static void qorum_aio_bh(void *opaque)
{
QorumAIOCB *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, qorum_check_ret(acb));
@@ -227,6 +235,32 @@ static void qorum_aio_cb(void *opaque, int ret)
}
}
+static BlockDriverAIOCB *qorum_aio_readv(BlockDriverState *bs,
+ int64_t sector_num,
+ QEMUIOVector *qiov,
+ int nb_sectors,
+ BlockDriverCompletionFunc *cb,
+ void *opaque)
+{
+ BDRVQorumState *s = bs->opaque;
+ QorumAIOCB *acb = qorum_aio_get(bs, qiov, true, 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,
+ qorum_aio_cb, &acb->aios[i]);
+ }
+
+ return &acb->common;
+}
+
static BlockDriverAIOCB *qorum_aio_writev(BlockDriverState *bs,
int64_t sector_num,
QEMUIOVector *qiov,
@@ -275,6 +309,7 @@ static BlockDriver bdrv_qorum = {
.bdrv_close = qorum_close,
.bdrv_co_flush_to_disk = qorum_co_flush,
+ .bdrv_aio_readv = qorum_aio_readv,
.bdrv_aio_writev = qorum_aio_writev,
};
--
1.7.9.5
- [Qemu-devel] [RFC 04/12] qorum: Add qorum_open()., (continued)
- [Qemu-devel] [RFC 04/12] qorum: Add qorum_open()., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 01/12] qorum: Add GPL v2+ heade r file., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 06/12] qorum: Add qorum_getlength()., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 03/12] qorum: Create BDRVQorumState and BlkDriver and do init., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 05/12] qorum: Add qorum_close()., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 02/12] qorum: Add QorumSingleAIOCB and QorumAIOCB., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 10/12] qorum: Add qorum_aio_readv.,
Benoît Canet <=
- [Qemu-devel] [RFC 07/12] qorum: Add qorum_aio_writev and its dependencies., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 12/12] qorum: build feature into QEMU., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 08/12] blkverify: Make blkverify_iovec_clone() and blkverify_iovec_compare() public, Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 09/12] qorum: Add qorum_co_flush()., Benoît Canet, 2012/08/02
- [Qemu-devel] [RFC 11/12] qorum: Add qorum mechanism., Benoît Canet, 2012/08/02
- Re: [Qemu-devel] [RFC 00/12] Qorum disk image corruption resiliency, Eric Blake, 2012/08/02
- Re: [Qemu-devel] [RFC 00/12] Qorum disk image corruption resiliency, Anthony Liguori, 2012/08/02