metset -s not showing 2 hosts

I have a metaset which can be seen by 2 hosts when I run metaset -s for example server1 and server2 :

host server2 currently owns the dataset and has mounted it and is using it.

It used to list server1 and server2 as hosts when I ran metaset  -s, and  it had yes next to host owner.

However I have a metaset which 2 servers can still see but they only list themselves and not the other server  eg.

server2 > metaset -s diskset1-ds

Set name = diskset1-ds, Set number = 3

Host                Owner

  server2       Yes

server1 / > metaset -s diskset1-ds

Set name = diskset1-ds, Set number = 3