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drbd: report sizes if rejecting too small peer disk 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Lars Ellenberg 2016-06-14 00:26:30 +02:00 committed by Jens Axboe
parent 65f5be3579
commit 60bac04012
1 changed files with 6 additions and 3 deletions
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9
drivers/block/drbd/drbd_receiver.c
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@ -3952,6 +3952,7 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
device->p_size = p_size;
if (get_ldev(device)) {
sector_t new_size, cur_size;
rcu_read_lock();
my_usize = rcu_dereference(device->ldev->disk_conf)->disk_size;
rcu_read_unlock();
@ -3968,11 +3969,13 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
/* Never shrink a device with usable data during connect.
But allow online shrinking if we are connected. */
if (drbd_new_dev_size(device, device->ldev, p_usize, 0) <
drbd_get_capacity(device->this_bdev) &&
new_size = drbd_new_dev_size(device, device->ldev, p_usize, 0);
cur_size = drbd_get_capacity(device->this_bdev);
if (new_size < cur_size &&
device->state.disk >= D_OUTDATED &&
device->state.conn < C_CONNECTED) {
drbd_err(device, "The peer's disk size is too small!\n");
drbd_err(device, "The peer's disk size is too small! (%llu < %llu sectors)\n",
(unsigned long long)new_size, (unsigned long long)cur_size);
conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD);
put_ldev(device);
return -EIO;