diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/nbd-client.c | 4 | ||||
| -rw-r--r-- | block/nbd.c | 14 |
2 files changed, 15 insertions, 3 deletions
diff --git a/block/nbd-client.c b/block/nbd-client.c index aab1e320b2..25dd28406b 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -384,6 +384,7 @@ int nbd_client_init(BlockDriverState *bs, logout("session init %s\n", export); qio_channel_set_blocking(QIO_CHANNEL(sioc), true, NULL); + client->info.request_sizes = true; ret = nbd_receive_negotiate(QIO_CHANNEL(sioc), export, tlscreds, hostname, &client->ioc, &client->info, errp); @@ -398,6 +399,9 @@ int nbd_client_init(BlockDriverState *bs, if (client->info.flags & NBD_FLAG_SEND_WRITE_ZEROES) { bs->supported_zero_flags |= BDRV_REQ_MAY_UNMAP; } + if (client->info.min_block > bs->bl.request_alignment) { + bs->bl.request_alignment = client->info.min_block; + } qemu_co_mutex_init(&client->send_mutex); qemu_co_queue_init(&client->free_sema); diff --git a/block/nbd.c b/block/nbd.c index 4a9048c280..a50d24b50a 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -472,9 +472,17 @@ static int nbd_co_flush(BlockDriverState *bs) static void nbd_refresh_limits(BlockDriverState *bs, Error **errp) { - bs->bl.max_pdiscard = NBD_MAX_BUFFER_SIZE; - bs->bl.max_pwrite_zeroes = NBD_MAX_BUFFER_SIZE; - bs->bl.max_transfer = NBD_MAX_BUFFER_SIZE; + NBDClientSession *s = nbd_get_client_session(bs); + uint32_t max = MIN_NON_ZERO(NBD_MAX_BUFFER_SIZE, s->info.max_block); + + bs->bl.max_pdiscard = max; + bs->bl.max_pwrite_zeroes = max; + bs->bl.max_transfer = max; + + if (s->info.opt_block && + s->info.opt_block > bs->bl.opt_transfer) { + bs->bl.opt_transfer = s->info.opt_block; + } } static void nbd_close(BlockDriverState *bs) |