From fb7da7037d9096bd34285425f85c4b4584e55701 Mon Sep 17 00:00:00 2001 From: Nick Wang Date: Fri, 10 Jul 2015 18:29:25 +0800 Subject: [Patch v2 08/10] drbd: Function to work with packet P_ZERO_OUT Using packet P_ZERO_OUT to update zero out status of peer node. Signed-off-by: Nick Wang CC: Philipp Reisner CC: Lars Ellenberg CC: drbd-dev@lists.linbit.com CC: linux-kernel@vger.kernel.org --- drbd/drbd_receiver.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c index 5e6b149..6eae84f 100644 --- a/drbd/drbd_receiver.c +++ b/drbd/drbd_receiver.c @@ -4383,6 +4383,41 @@ static union drbd_state convert_state(union drbd_state ps) return ms; } +static int receive_zero_out_state(struct drbd_connection *connection, struct packet_info *pi) +{ + struct drbd_peer_device *peer_device; + struct drbd_device *device; + struct p_state *p = pi->data; + unsigned int isfail; + + peer_device = conn_peer_device(connection, pi->vnr); + if (!peer_device) + return -EIO; + device = peer_device->device; + + isfail = be32_to_cpu(p->state); + + if (isfail) { + drbd_info(device, "Failed to zero out peer device\n"); + set_bit(ZERO_FAIL, &device->flags); + } else { + drbd_info(device, "Finished zero out peer device\n"); + if (test_and_clear_bit(ZERO_DONE, &device->flags)) { + drbd_info(device, "Both side finished zeroing.\n"); + spin_lock_irq(&device->resource->req_lock); + _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, + pdsk, D_UP_TO_DATE), CS_VERBOSE, NULL); + spin_unlock_irq(&device->resource->req_lock); + drbd_send_zero_out_finish(peer_device); + } else { + /* waiting for local device finished */ + set_bit(ZERO_DONE, &device->flags); + } + } + + return 0; +} + static int receive_req_state(struct drbd_connection *connection, struct packet_info *pi) { struct drbd_peer_device *peer_device; @@ -5008,6 +5043,7 @@ static struct data_cmd drbd_cmd_handler[] = { [P_CONN_ST_CHG_REQ] = { 0, sizeof(struct p_req_state), receive_req_conn_state }, [P_PROTOCOL_UPDATE] = { 1, sizeof(struct p_protocol), receive_protocol }, [P_TRIM] = { 0, sizeof(struct p_trim), receive_Data }, + [P_ZERO_OUT] = { 0, sizeof(struct p_state), receive_zero_out_state }, }; static void drbdd(struct drbd_connection *connection) -- 1.8.4.5