Re: put hangs

The problem is almost certainly due to the crufty and unnatural use  
that Net::SSH and Net::SFTP put Ruby's threads to. I'm confident that  
Net::SSH v2 (and friends) will fix this problem...but I can't give an  
ETA on those. Net::SSH and Net::SCP are both mostly done, but  
Net::SFTP is only about 50% finished or so. The good news is that I've  
started feeling motivated to work on it again, so maybe it will see  
the light of day sometime next month.

- Jamis

On Dec 19, 2007, at 2:41 PM, Paul Stadig wrote:

> Ok, I did some more tests.
>
> put("1"*12105, '/tmp/tmpfile.txt')
>
> works, and
>
> put("1"*12106, '/tmp/tmpfile.txt')
>
> does not work. So it looks like my threshold is about 12k. I don't
> know what that means, or why it is happening. I'm running Ubuntu Gutsy
> on the client side, and Ubuntu Dapper on the server side.
>
>
> Paul
>
> On Dec 19, 4:21 pm, Paul Stadig <p...-rIu1mJrGGVN7tPAFqOLdPg@xxxxxxxxxxxxxxxx> 
> wrote:
> > Adding "set :synchronous_connect, true" fixed byputhang, but I also
> > noticed that, for me,putwould only hang with "large" files. I kept
> > repeatedly trying toputthe same file, and as I whittled it down it
> > would finally go through. Maybe that will help someone debug. I  
> > didn't
> > spend enough time to figure out exactly what the threshold is,  
> > because
> > the :synchronous_connect option worked for me, but the full file I  
> > was
> > trying to send was only 196k, so it's a low threshold what ever it  
> > is.
> >
> > Paul
> >
> > On Nov 13, 4:07 pm, Jamis Buck <ja...-uHoyYlH2B+GakBO8gow8eQ@xxxxxxxxxxxxxxxx> 
> > wrote:
> >
> > > You might try the following setting in deploy.rb:
> >
> > >   set :synchronous_connect, true
> >
> > > Some have found that having cap try to connect to each server
> > > synchronously (rather than in parallel, via threads) has helped with
> > > puthanging.
> >
> > > - Jamis
> >
> > > On Nov 13, 2007, at 1:32 PM, Skorgu wrote:
> >
> > > > I realize this is an old thread, but there aren't any good  
> > > > solutions
> > > > to this that I can find. I'm seeing identical behavior, also with
> > > > Ubuntu on both ends and no gateway. I can replicate this  
> > > > trivially if
> > > > anyone wants to poke at it.
> >
> > > > In the meantime, I'm backing down to the shell to transfer files:
> >
> > > > def put_file(file, role)
> > > >    for file_server in roles[*role]
> > > >      logger.info "Pushing #{file} to #{file_server}"
> > > >      %x[ scp #{file} #{file_server}:~/#{file}]
> > > >    end
> > > >    logger.info "#{file} pushed successfully"
> > > > end
> >
> > > > Definitely dirty but it gets the job done. Hope this helps someone.
> >
> > > > On Sep 26, 1:40 pm, wolfmanjm 
> > > > <wolfma...-Re5JQEeQqe8AvxtiuMwx3w@xxxxxxxxxxxxxxxx> wrote:
> > > > > No gateway, everything in my capfile is shown. This is very
> > > > > repeatable, so if I get time I'll try to figure it out. I can  
> > > > > give a
> > > > > you a trace of where it is hung when I hit ctrl c if that helps.
> >
> > > > > The funny thing is I used this all the time in cap1 and never had
> > > > > this
> > > > > problem before!
> >
> > > > > On Sep 26, 2:28 am, Jamis Buck <ja...-uHoyYlH2B+GakBO8gow8eQ@xxxxxxxxxxxxxxxx> 
> > > > > wrote:
> >
> > > > > > Yucky. You're being bit by the infamous hanging-putbug. Are you
> > > > > > using a gateway? If so, that's the problem, and there's not  
> > > > > > really a
> > > > > > workaround except to NOT use a gateway withput. If you aren't  
> > > > > > using
> > > > > > a gateway, then you're one of the lucky few who have encountered
> > > > > > this
> > > > > > one. I've never been able to duplicate this except with a  
> > > > > > gateway.
> >
> > > > > > I'm very hopeful that the rewrite of Net::SSH and Net::SFTP  
> > > > > > will fix
> > > > > > this...but that's still a few weeks off, at best. I'm afraid I
> > > > > > haven't got any better news for you. :( If you happen to find a
> > > > > > workaround, please do post it here.
> >
> > > > > > - Jamis
> >
> > > > > > P.S. And yeah, the lack of documentation *is* disturbing. I'll
> > > > > > get to
> > > > > > it as soon as I can.
> >
> > > > > > On Sep 26, 2007, at 12:32 AM, wolfmanjm wrote:
> >
> > > > > > > Hi, I'm just starting to use cap2 (after using cap1 for years).
> >
> > > > > > > I have a really really simple capfile...
> >
> > > > > > > ssh_options[:port] = 11345
> >
> > > > > > > task :deploy_mystuff, :hosts => "myhost.com" do
> > > > > > >    now= "#{Time.now.utc.strftime("%Y%m%d%H%M%S")}"
> >
> > > > > > >   put(File.read("app..war"), "app.war.#{now}")
> >
> > > > > > >    run <<-CMD
> > > > > > >        mv deploy/app.war app.war.old.#{now} &&
> > > > > > >        cp "app.war.#{now} deploy/app_war"
> > > > > > >    CMD
> >
> > > > > > > end
> >
> > > > > > > Theputhangsbefore sending any bytes, on the host the file is
> > > > > > > created ok, but has zero length.
> >
> > > > > > > (ssh and scp work fine, my host is ubuntu fiesty and the  
> > > > > > > server is
> > > > > > > ubuntu dapper).
> >
> > > > > > > Any ideas?
> >
> > > > > > > (BTW I presumeputis supported in cap2, the lack of
> > > > > > > documentation is
> > > > > > > quite disturbing :)
> >
> > > > > > smime.p7s
> > > > > > 3KDownload
> >
> > > smime.p7s
> > > 3KDownload
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