From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:49855) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T5tmg-0001TK-8i for qemu-devel@nongnu.org; Mon, 27 Aug 2012 03:30:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T5tmc-0000kp-7z for qemu-devel@nongnu.org; Mon, 27 Aug 2012 03:30:54 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:48405) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T5tmb-0000d7-Mq for qemu-devel@nongnu.org; Mon, 27 Aug 2012 03:30:50 -0400 Received: by mail-wi0-f181.google.com with SMTP id hm2so2130790wib.10 for ; Mon, 27 Aug 2012 00:30:49 -0700 (PDT) From: "=?UTF-8?q?Beno=C3=AEt=20Canet?=" Date: Mon, 27 Aug 2012 09:30:25 +0200 Message-Id: <1346052629-15686-8-git-send-email-benoit@irqsave.net> In-Reply-To: <1346052629-15686-1-git-send-email-benoit@irqsave.net> References: <1346052629-15686-1-git-send-email-benoit@irqsave.net> Subject: [Qemu-devel] [RFC V5 07/11] quorum: Add quorum_aio_readv. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@linux.vnet.ibm.com, blauwirbel@gmail.com, pbonzini@redhat.com, eblake@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= Signed-off-by: Benoit Canet --- block/quorum.c | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/block/quorum.c b/block/quorum.c index f83b4cf..791ef4a 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -193,15 +193,24 @@ static void quorum_aio_bh(void *opaque) { QuorumAIOCB *acb = opaque; BDRVQuorumState *s = acb->bqs; - int ret; + int i, ret; ret = s->threshold <= acb->success_count ? 0 : -EIO; + for (i = 0; i < s->total; i++) { + qemu_vfree(acb->aios[i].buf); + acb->aios[i].buf = NULL; + acb->aios[i].ret = 0; + } + qemu_bh_delete(acb->bh); acb->common.cb(acb->common.opaque, ret); if (acb->finished) { *acb->finished = true; } + for (i = 0; i < s->total; i++) { + qemu_iovec_destroy(&acb->qiovs[i]); + } g_free(acb->aios); g_free(acb->qiovs); qemu_aio_release(acb); @@ -261,6 +270,32 @@ static void quorum_aio_cb(void *opaque, int ret) qemu_bh_schedule(acb->bh); } +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(s, bs, qiov, sector_num, + nb_sectors, cb, opaque); + int i; + + for (i = 0; i < s->total; i++) { + acb->aios[i].buf = qemu_blockalign(bs->file, qiov->size); + qemu_iovec_init(&acb->qiovs[i], qiov->niov); + qemu_iovec_clone(&acb->qiovs[i], qiov, acb->aios[i].buf); + } + + for (i = 0; i < s->total; 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, @@ -304,6 +339,7 @@ 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