Receive P_UUIDS protocol to start zero out device.
Signed-off-by: Nick Wang <nw...@suse.com>
CC: Philipp Reisner <philipp.reis...@linbit.com>
CC: Lars Ellenberg <lars.ellenb...@linbit.com>
CC: drbd-...@lists.linbit.com
CC: linux-kernel@vger.kernel.org
---
drbd/drbd_receiver.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c
index 41c958a..cbb66e6 100644
--- a/drbd/drbd_receiver.c
+++ b/drbd/drbd_receiver.c
@@ -4304,6 +4304,7 @@ static int receive_uuids(struct drbd_connection
*connection, struct packet_info
struct p_uuids *p = pi->data;
u64 *p_uuid;
int i, updated_uuids = 0;
+ int zero_out_err = 0;
peer_device = conn_peer_device(connection, pi->vnr);
if (!peer_device)
@@ -4338,6 +4339,11 @@ static int receive_uuids(struct drbd_connection
*connection, struct packet_info
peer_device->connection->agreed_pro_version >= 90 &&
device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED
&&
(p_uuid[UI_FLAGS] & 8);
+ int zero_out_devices =
+ device->state.conn == C_CONNECTED &&
+ peer_device->connection->agreed_pro_version >= 90 &&
+ device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED
&&
+ (p_uuid[UI_FLAGS] & 16);
if (skip_initial_sync) {
drbd_info(device, "Accepted new current UUID, preparing
to skip initial sync\n");
drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
@@ -4350,6 +4356,23 @@ static int receive_uuids(struct drbd_connection
*connection, struct packet_info
drbd_md_sync(device);
updated_uuids = 1;
}
+
+ if (zero_out_devices) {
+ drbd_info(device, "Accepted to zero out devices, will
take a long time\n");
+ _drbd_uuid_set(device, UI_CURRENT, p_uuid[UI_CURRENT]);
+ _drbd_uuid_set(device, UI_BITMAP, 0);
+ drbd_print_uuids(device, "cleared bitmap UUID for
zeroing device");
+ zero_out_err = zero_out_local_device(device);
+ if (zero_out_err) {
+ drbd_err(device, "Failed to zero out local
device\n");
+ drbd_send_zero_out_fail(peer_device);
+ drbd_chk_io_error(device, 1, DRBD_WRITE_ERROR);
+ } else {
+ drbd_info(device, "Finish zero out device\n");
+ drbd_send_zero_out_ok(peer_device);
+ }
+ }
+
put_ldev(device);
} else if (device->state.disk < D_INCONSISTENT &&
device->state.role == R_PRIMARY) {
--
1.8.4.5
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