[OpenIndiana-discuss] mbuffer connection refused on varius ports ... what to try

[Geoff Nordli]

On 2017-03-27 01:40 AM, Harry Putnam wrote:
> Trying to learn how to use mbuffer and tamp to do zfs send/receive
> rather than ssh which is pretty slow even on my home gigabit lan at
> home where there is very little traffic.
>
> So far using ready made examples from posters on this group or a few I
> found online I've constantly run into `connection refused' messages.
>
> I've tried various ports which seems to make no difference. I wondered
> if there is something that needs doing with the hosts to make them accept
> mbuffer connections?
>
> Send host is an HP xw8600 running bld 151_9 .. and recv host is a vm
> running hipster in a vbox vm on a windows 64 host.  The windows
> firewall is turned off.  And I have no firewall type stuff running on
> either solaris host.
>
> Here is an example command that I plagiarized totally from posts here
> recently.
>
> ,----
> | sender:
> | zfs send tank/dana at snap1 | tamp | mbuffer -s 128k -m 1000m -O
> | target_host:31337
> |
> | receiver:
> | mbuffer -s 128k -m 1999m -I 31337 | tamp -d | zfs recv -vFd newtank
> `----
>
> My rendition:
>
> zfs send p0/vb/vm at 170326_1 |tamp|mbuffer -s 128k -m1000m -0
> recv-host:31337 | mbuffer -s 128k -m 1999m -I 31337 |tamp -d |
> zfs recv -vF p0/vb/vm
>
>    Gets this error:
>     mbuffer warning: connecting to recv-host:31337 Connection refused
>     mbuffer error unable to connect to recv-host:31337
>
> Trying it by starting recv part on the recv host first (some advice I
> found while googling (suposed to provide a listener)) seems to make no
> difference.  It ends in the same error.
>
>


Just a thought here, you may want to try a different ssh cipher. Give 
arcfour a try and see if that is fast enough for you.

Geoff