From: Suvayu Ali <fatkasuvayu+linux@gmail.com>
To: Michael Albinus <michael.albinus@gmx.de>
Cc: help-gnu-emacs@gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: Tramp and ssh control path
Date: Mon, 15 Apr 2013 18:09:19 +0200 [thread overview]
Message-ID: <20130415160919.GI16442@kuru.dyndns-at-home.com> (raw)
In-Reply-To: <871uab9alp.fsf@gmx.de>
Hi Michael,
On Mon, Apr 15, 2013 at 03:39:30PM +0200, Michael Albinus wrote:
> Michael Albinus <michael.albinus@gmx.de> writes:
>
> >> BTW, such problems shouldn't exist any more now that the master
> >> is handled correctly (it's not one of the sessions any more, so all
> >> sessions are "equal").
> >
> > In this case, I could make ControlPath configurable, with a red blinking
> > warning about possible side effects ...
>
> The Tramp FAQ has now the following wording:
>
> --8<---------------cut here---------------start------------->8---
> * TRAMP does not use my 'ssh' 'ControlPath'
>
> Your 'ControlPath' setting will be overwritten by 'ssh' sessions
> initiated by TRAMP. This is because a master session, initiated
> outside Emacs, could be closed, which would stall all other 'ssh'
> sessions for that host inside Emacs.
>
> Consequently, if you connect to a remote host via TRAMP, you might
> be prompted for a password again, even if you have established
> already an 'ssh' connection to that host. Further TRAMP
> connections to that host, for example in order to run a process on
> that host, will reuse that initial 'ssh' connection.
>
> If you know that your 'ControlPath' settings won't disturb TRAMP,
> you could customize the variable 'tramp-ssh-controlmaster-options'
> like this:
>
> (setq tramp-ssh-controlmaster-options
> (concat
> "-o ControlPath=/tmp/ssh-ControlPath-%%r@%%h:%%p "
> "-o ControlMaster=auto -o ControlPersist=no"))
>
> Note, that "%r", "%h" and "%p" must be encoded as "%%r", "%%h" and
> "%%p", respectively.
> --8<---------------cut here---------------end--------------->8---
>
> This shall work starting Tramp 2.2.7. Emacs 24.3 has built-in Tramp
> 2.2.6, so it doesn't work there yet.
Thanks a lot, for both the very clear FAQ and the option to override it.
Cheers,
:)
--
Suvayu
Open source is the future. It sets us free.
prev parent reply other threads:[~2013-04-15 16:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-11 12:38 Tramp and ssh control path Suvayu Ali
2013-04-12 9:34 ` Michael Albinus
2013-04-14 23:58 ` Suvayu Ali
2013-04-15 7:52 ` Michael Albinus
2013-04-15 8:24 ` Suvayu Ali
2013-04-15 8:53 ` Michael Albinus
2013-04-15 12:10 ` Stefan Monnier
2013-04-15 12:30 ` Michael Albinus
2013-04-15 13:39 ` Michael Albinus
2013-04-15 14:48 ` Stefan Monnier
2013-04-16 8:08 ` Michael Albinus
2013-04-15 16:09 ` Suvayu Ali [this message]
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