tramp trouble with 24.3

tramp trouble with 24.3

[Neal Becker]

I am having trouble with tramp on 24.3 (works fine on 24.2)

Trying e.g., /root@localhost:/etc/  asks for pw and then just hangs.

Similar for /sudo:root@localhost:/etc/

No problem on 24.2

Still true if started with emacs -Q

Re: tramp trouble with 24.3

[Michael Albinus]

Neal Becker <ndbecker2@gmail.com> writes:

Hi Neal,

> I am having trouble with tramp on 24.3 (works fine on 24.2)
>
> Trying e.g., /root@localhost:/etc/  asks for pw and then just hangs.
>
> Similar for /sudo:root@localhost:/etc/
>
> No problem on 24.2
>
> Still true if started with emacs -Q

Which system are you running on? Cygwin? Then you might consult
<http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14030>.

Otherwise, please eval (setq tramp-verbose 6) and rerun the test. Show
the resulting debug buffer from Tramp.

Best regards, Michael.

Re: tramp trouble with 24.3

[Neal Becker]

[-- Attachment #1: Type: text/plain, Size: 660 bytes --]

Michael Albinus wrote:

> Neal Becker <ndbecker2@gmail.com> writes:
> 
> Hi Neal,
> 
>> I am having trouble with tramp on 24.3 (works fine on 24.2)
>>
>> Trying e.g., /root@localhost:/etc/  asks for pw and then just hangs.
>>
>> Similar for /sudo:root@localhost:/etc/
>>
>> No problem on 24.2
>>
>> Still true if started with emacs -Q
> 
> Which system are you running on? Cygwin? Then you might consult
> <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14030>.
> 
> Otherwise, please eval (setq tramp-verbose 6) and rerun the test. Show
> the resulting debug buffer from Tramp.
> 
> Best regards, Michael.

I got it to hang using /root@nbecker1:

debug attached

[-- Attachment #2: debug --]
[-- Type: text/plain, Size: 881 bytes --]

;; GNU Emacs: 24.3.1 Tramp: 2.2.6-24.3 -*- mode: outline; -*-
10:48:25.009465 tramp-maybe-open-connection (3) # Opening connection for root@nbecker1 using scpc...
10:48:25.010264 tramp-maybe-open-connection (6) # /bin/sh -i
10:48:25.016931 tramp-wait-for-regexp (6) # 
#$ 
10:48:25.051517 tramp-maybe-open-connection (3) # Sending command `exec ssh -l root  -o ControlPath=/tmp/tramp.14240TEw.%r@%h:%p -o ControlMaster=yes -e none nbecker1'
10:48:25.051642 tramp-send-command (6) # exec ssh -l root  -o ControlPath=/tmp/tramp.14240TEw.%r@%h:%p -o ControlMaster=yes -e none nbecker1
10:48:25.051935 tramp-process-actions (3) # Waiting for prompts from remote shell
10:48:25.141334 tramp-process-one-action (5) # Looking for regexp "\(.*ogin\( .*\)?: *\)\'" from remote shell
10:48:25.141459 tramp-process-one-action (5) # Looking for regexp "\(^.*\([pP]assword\|[pP]assphrase\).*:

Re: tramp trouble with 24.3

[Michael Albinus]

Neal Becker <ndbecker2@gmail.com> writes:

> I got it to hang using /root@nbecker1:
>
> debug attached

Very short. Did you wait until the timeout? Did you shorten the traces?

Still the question: what's your local system? Could you perform in a
terminal window

# uname -a

Anyway, what happens, if you send from a terminal window

# ssh -l root  -o ControlPath=/tmp/tramp.14240TEw.%r@%h:%p -o ControlMaster=yes -e none nbecker1

Best regards, Michael.

Re: tramp trouble with 24.3

[Neal Becker]

Michael Albinus wrote:

> Neal Becker <ndbecker2@gmail.com> writes:
> 
>> I got it to hang using /root@nbecker1:
>>
>> debug attached
> 
> Very short. Did you wait until the timeout? Did you shorten the traces?
> 
> Still the question: what's your local system? Could you perform in a
> terminal window
> 
> # uname -a
> 
> Anyway, what happens, if you send from a terminal window
> 
> # ssh -l root  -o ControlPath=/tmp/tramp.14240TEw.%r@%h:%p -o
> # ControlMaster=yes -e none nbecker1
> 
> Best regards, Michael.

OK, if I wait a LONG time, it does respond.  But it still hangs on 'find file'.

These two machines are in the same room on a 1G connection.  On 24.2 it is 
instant.

Trying your experiment seems to work:

ssh -l root  -o ControlPath=/tmp/tramp.1817NCW.%r@%h:%p -o ControlMaster=yes -e 
none nbecker1
root@nbecker1's password: 
ControlSocket /tmp/tramp.1817NCW.root@nbecker1:22 already exists, disabling 
multiplexing
Last login: Fri Apr 19 11:19:44 2013 from nbecker7.hughes.com
[root@nbecker1 ~]# 

Re: tramp trouble with 24.3

[Michael Albinus]

Neal Becker <ndbecker2@gmail.com> writes:

Hi Neal,

> ssh -l root  -o ControlPath=/tmp/tramp.1817NCW.%r@%h:%p -o ControlMaster=yes -e 
> none nbecker1
> root@nbecker1's password: 
> ControlSocket /tmp/tramp.1817NCW.root@nbecker1:22 already exists, disabling 
> multiplexing
> Last login: Fri Apr 19 11:19:44 2013 from nbecker7.hughes.com
> [root@nbecker1 ~]# 

Looks like this prompt does not match `tramp-shell-prompt-pattern'. Did
you have some Tramp special settings in Emacs 24.2?

I don't remember that `tramp-shell-prompt-pattern' has changed last
months, but I might be wrong. Anyway, adapt `tramp-shell-prompt-pattern'
for that prompt. The Tramp manual gives you some hints.

Best regards, Michael.

Re: tramp trouble with 24.3

[Neal Becker]

Michael Albinus wrote:

> Neal Becker <ndbecker2@gmail.com> writes:
> 
> Hi Neal,
> 
>> ssh -l root  -o ControlPath=/tmp/tramp.1817NCW.%r@%h:%p -o ControlMaster=yes
>> -e none nbecker1
>> root@nbecker1's password:
>> ControlSocket /tmp/tramp.1817NCW.root@nbecker1:22 already exists, disabling
>> multiplexing
>> Last login: Fri Apr 19 11:19:44 2013 from nbecker7.hughes.com
>> [root@nbecker1 ~]#
> 
> Looks like this prompt does not match `tramp-shell-prompt-pattern'. Did
> you have some Tramp special settings in Emacs 24.2?
> 
> I don't remember that `tramp-shell-prompt-pattern' has changed last
> months, but I might be wrong. Anyway, adapt `tramp-shell-prompt-pattern'
> for that prompt. The Tramp manual gives you some hints.
> 
> Best regards, Michael.

No I didn't set anything special, and in fact, had earlier seen the problem with 
emacs -Q.

This is a linux box talking to a linux box, so if doesn't work for me, I'll bet 
I'm not the only one who will/has seen this.

Re: tramp trouble with 24.3

[Michael Albinus]

Neal Becker <ndbecker2@gmail.com> writes:

> This is a linux box talking to a linux box, so if doesn't work for me, I'll bet 
> I'm not the only one who will/has seen this.

Your prompt doesn't look to be the default one. I guess it is
customized, isn't it?

Best regards, Michael.

Re: tramp trouble with 24.3

[Neal Becker]

Michael Albinus wrote:

> Neal Becker <ndbecker2@gmail.com> writes:
> 
>> This is a linux box talking to a linux box, so if doesn't work for me, I'll
>> bet I'm not the only one who will/has seen this.
> 
> Your prompt doesn't look to be the default one. I guess it is
> customized, isn't it?
> 
> Best regards, Michael.

No it isn't.  Maybe it's cause color prompts are on by default?  That's not my 
idea.  That's fedora 18.

Re: tramp trouble with 24.3

[Neal Becker]

Neal Becker wrote:

> Michael Albinus wrote:
> 
>> Neal Becker <ndbecker2@gmail.com> writes:
>> 
>>> This is a linux box talking to a linux box, so if doesn't work for me, I'll
>>> bet I'm not the only one who will/has seen this.
>> 
>> Your prompt doesn't look to be the default one. I guess it is
>> customized, isn't it?
>> 
>> Best regards, Michael.
> 
> No it isn't.  Maybe it's cause color prompts are on by default?  That's not my
> idea.  That's fedora 18.

Also, shell-prompt-pattern is working in shell-mode.  In shell mode:

echo $PS1
\[\033[01;32m\]\u@\h\[\033[00m\] 
\[\033[01;34m\]\W\[\033[00m\]\[\033[1;32m\]\$\[\033[m\]

Also, don't forget, the problem is not seen in 24.2

I used emacs from fedora.  Used rpmbuild --rebuild to build the fedora 20 rpm on 
fedora 18.  I don't see anything added by the fedora rpm that would change this 
prompt regex (but haven't searched exhaustively)

Re: tramp trouble with 24.3

[Michael Albinus]

Neal Becker <ndbecker2@gmail.com> writes:

Hi Neal,

> Neal Becker wrote:
>
>> Michael Albinus wrote:
>> 
>>> Neal Becker <ndbecker2@gmail.com> writes:
>>> 
>>>> This is a linux box talking to a linux box, so if doesn't work for me, I'll
>>>> bet I'm not the only one who will/has seen this.
>>> 
>>> Your prompt doesn't look to be the default one. I guess it is
>>> customized, isn't it?
>>> 
>>> Best regards, Michael.
>> 
>> No it isn't.  Maybe it's cause color prompts are on by default?  That's not my
>> idea.  That's fedora 18.

Many people are using Fedora 18, and I haven't seen any other complaint yet.

> Also, shell-prompt-pattern is working in shell-mode.  In shell mode:
>
> echo $PS1
> \[\033[01;32m\]\u@\h\[\033[00m\] 
> \[\033[01;34m\]\W\[\033[00m\]\[\033[1;32m\]\$\[\033[m\]

And? Tramp does not use shell-mode. Anyway, this prompt is hard enough
to parse. The Tramp manual gives you some hints how to avoid escape
sequences, when scripts are accessing your account from remote.

> Also, don't forget, the problem is not seen in 24.2

Maybe there was a pattern change in Tramp. As I said, I don't remember, but ...

> I used emacs from fedora.  Used rpmbuild --rebuild to build the fedora
> 20 rpm on
> fedora 18.  I don't see anything added by the fedora rpm that would change this 
> prompt regex (but haven't searched exhaustively)

Sorry, I don't use Fedore, and I don't understand what you have changed
via rpmbuild etc. Anyway, if I could see your complete prompt (including
escape sequence), I could try to adapt tramp-shell-prompt-pattern to
your needs. The example above is not sufficient, because it does not
expand user and host names, and alike.

Just run your test case with tramp-verbose 10. There will be traces like

--8<---------------cut here---------------start------------->8---
12:37:39.845362 tramp-accept-process-output (10) # 
#$
--8<---------------cut here---------------end--------------->8---

(#$ is my prompt). Send those lines as coded attachment, in order not to
loose escape sequences. I will analyze them.

You could send it directly to me, in order to avoid bit lossages.

Best regards, Michael.