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Subject: |
30.0.50; Tramp doesn't use ControlMaster even with (setq tramp-use-connection-share nil) |
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Date: |
Mon, 13 May 2024 05:00:28 +0300 |
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User-agent: |
Mozilla Thunderbird |
I have ~/.ssh/config set up correctly enough that
ssh <user>@<host> in the terminal connects quickly (and when I Ctrl-D
out of it, it finishes with "Shared connection to <...> closed.")
But I haven't been able to make Tramp reuse the connection.
I (setq tramp-use-connection-share nil) - so it would pick up the user
settings from my ssh config - and the first 'C-x C-f /ssh:user@host:'
takes a lot of time anyway with its "Opening connection ...".
For context: I'm on a high-latency network node geographically, and
using an even slower server for this example. I.e. my ping to it is
~170ms, but the full new ssh connection takes around 4 seconds.
On a related note, are asynchronous processes supposed to use
ControlMaster when it's available? I get "Opening connection ..." for
every M-& call, for example.
In GNU Emacs 30.0.50 (build 7, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.18.0, Xaw scroll bars) of 2024-05-12 built on potemkin
Repository revision: b20d4ab374fb9b3c80b968df6acd6444f763bd40
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12302000
System Description: Ubuntu 23.10
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#70901: 30.0.50; Tramp doesn't use ControlMaster even with (setq tramp-use-connection-share nil) |
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Date: |
Sat, 25 May 2024 11:42:49 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) |
Version: 30.1
Dmitry Gutov <dmitry@gutov.dev> writes:
> Hi Michael,
Hi Dmitry,
>> I've changed it such a way that the message "Opening connection ..."
>> appears only until the prompt from remote is seen. For the rest, there
>> will be another message "Setup connection ...".
>> As bonus, the "Opening connection ..." message appears now for every
>> hop
>> in the multi-hop case. This is new.
>> Could you pls check the appended patch?
>
> It's working well, thank you.
Thanks for the feedback. Pushed to master, closing the bug.
> A minor downside is more messages, but at level 3 Tramp is fairly
> chatty anyway - so people who would be bothered by it should reduce
> the value of 'tramp-verbose'. But now the connection process looks
> more clear.
You cannot have both: dividing the message into two different ones, and
not making Tramp more chatty. And if you change the message level of
"Setup connection ..." to something different, there will be a quiet
Tramp saying "Opening connection ... done" w/o returning control to the
user for a while. Another source of complaints I like to avoid.
The change, that Tramp says now "Opening connection ..." for every hop
in a multi-hop environment is an advantage I believe. You have a better
view on where Tramp is working (and maybe being blocked).
> Best regards,
> Dmitry
Best regards, Michael.
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