Hello guys, Last year I was working at a customer's site and we came across the "corrupted mac" issue reported here. When they were trying to copy large file (>50 megs) the scp transfer would quit showing this "Corrupted MAC" message. We debugged the problem and found it was a hardware issue. The PCI bus speed was to high causing the Intel Gigabit Ethernet controller clock to scramble the packets. This broke the ssh connection every time. We finally found an errata for the controller that confirmed our findings.
If you are experiencing a similar problem and only with certain hosts, I suggest you take a look at this possibility and try to discard any possible hardware issue. Keep up the good work! Edgardo On Jul 20, 10:50 am, "Jamis Buck" <[EMAIL PROTECTED]> wrote: > I'd love some suggestions for how to easily duplicate the problem, > actually. I wasn't able to duplicate the problem on that account after > all--it was just uploading really slowly. And it was uploading really > slowly via the OpenSSH sftp utility, too, so it wasn't just the > Net::SFTP or Net::SSH libs. > > - Jamis > > On 7/20/07, Andrew Beacock <[EMAIL PROTECTED]> wrote: > > > > > Thanks Jamis for the update, if you need any help testing out patches > > or alternative suggestions please let me know - I'd be happy to help > > get to the bottom of this one :) > > > Andy > > > -- > > Andrew Beacock > > blog:http://blog.andrewbeacock.com > > > On Jul 19, 2:48 pm, "Jamis Buck" <[EMAIL PROTECTED]> wrote: > > > Andy, > > > > I'm investigating even as we speak. I was set up with an account that > > > exhibited the problem, and I was finally able to duplicate the problem > > > there, which has helped. I'll post more as soon as I have more info. > > > > - Jamis > > > > On 7/19/07, Andrew Beacock <[EMAIL PROTECTED]> wrote: > > > > > Jamis, > > > > > Have you been able to investigate this further? I'm still getting the > > > > issue (even when running with just one role). "require 'fastthread" > > > > seems to help but not solve the problem. > > > > > Andy > > > > > -- > > > > Andrew Beacock > > > > blog:http://blog.andrewbeacock.com > > > > > On Jul 11, 7:55 pm, "Jamis Buck" <[EMAIL PROTECTED]> wrote: > > > > > That would help immensely. As it is, the only error I can duplicate > > > > > consistently is a "corruptedmac" error when performing two or more > > > > > simultaneous large uploads via a gateway...which is not the same error > > > > > others are seeing. > > > > > > - Jamis > > > > > > On 7/11/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > > > > > jamis, if it would help. > > > > > > I could see if my hosting provider can get you access to an > > > > > > instance on > > > > > > the machine. > > > > > > > On 7/11/07, Jamis Buck <[EMAIL PROTECTED]> wrote: > > > > > > > > Note that 100% CPU consumption is a known issue with Net::SFTP, > > > > > > > and is > > > > > > > not necessarily related to the upload hanging. Even when > > > > > > > everything > > > > > > > works correctly, you will still see huge CPU usage by Net::SFTP. > > > > > > > > - Jamis > > > > > > > > On 7/11/07, AndrewBeacock<[EMAIL PROTECTED]> wrote: > > > > > > > > > Just a little more information: > > > > > > > > If I comment out my :web and :db targets (leaving just :app) > > > > > > > > then 9 > > > > > > > > out of 10 times the deploy works correctly. > > > > > > > > > As soon as I add my :db target back in (a different hostname) > > > > > > > > it hangs > > > > > > > > in the same place as before. > > > > > > > > > Andy. > > > > > > > > -- > > > > > > > > AndrewBeacock > > > > > > > > Blog:http://blog.andrewbeacock.com > > > > > > > > > On Jul 11, 10:25 am, AndrewBeacock< [EMAIL PROTECTED]> wrote: > > > > > > > > > Spoke too soon :( > > > > > > > > > > It worked once (after I added the require line) but not again > > > > > > > > > still > > > > > > > > > hangs at the same place ("** uploading data to ...") and I > > > > > > > > > thought I > > > > > > > > > was using 1.8.6 but obviously not! > > > > > > > > > > I'm using: > > > > > > > > > > Ubuntu 6.10 (lsb_release -r -> 6.10) > > > > > > > > > Kernel 2.6.17 (uname -a -> Linux 2.6.17-11-386 #2 Fri May 18 > > > > > > > > > 23:37:00 > > > > > > > > > UTC 2007 i686 GNU/Linux) > > > > > > > > > Ruby 1.8.4 (ruby -v -> ruby 1.8.4 (2005-12-24) [i486-linux]) > > > > > > > > > capistrano (1.99.3) > > > > > > > > > fastthread (1.0) > > > > > > > > > highline (1.2.9) > > > > > > > > > net-sftp ( 1.1.0) > > > > > > > > > net-ssh (1.1.2) > > > > > > > > > > I have a different host listed for my :db than my :app (the > > > > > > > > > :web is > > > > > > > > > the same as the :app). > > > > > > > > > > Andy. > > > > > > > > > -- > > > > > > > > > AndrewBeacock > > > > > > > > > Blog:http://blog.andrewbeacock.com > > > > > > > > > > On Jul 11, 10:11 am, AndrewBeacock<[EMAIL PROTECTED]> wrote: > > > > > > > > > > > Ezra, > > > > > > > > > > Thank you so much! I've only started with Capistrano this > > > > > > > > > > morning > > > > > > > > > > (gem'ing v2) and had this very issue (I'm using Ruby > > > > > > > > > > 1.8.6). I've > > > > > > > > > > just added the require 'fastthread' to the top of my > > > > > > > > > > Capfile and now > > > > > > > > > > it all works fine to two different hosts. > > > > > > > > > > > Andy. > > > > > > > > > > -- > > > > > > > > > > Blog:http://blog.andrewbeacock.com > > > > > > > > > > > On Jul 11, 12:32 am, Ezra Zygmuntowicz <[EMAIL PROTECTED]> > > > > > > > > > > wrote: > > > > > > > > > > > > What version of RUby itself are all of you > > > > > > > > > > > experiencing > > > > > > this problem > > > > > > > > > > > running? Is it perhaps ruby 1.8.6? I've been doing file > > > > > > > > > > > transfers > > > > > > > > > > > with cap here of up to 25Mb without ever seeing this > > > > > > > > > > > issue no > > > > > > matter > > > > > > > > > > > what i call before or after the put command. THis was > > > > > > > > > > > with ruby > > > > > > 1.8.5 > > > > > > > > > > > > But I just tried it with ruby 1.8.6 and was able > > > > > > > > > > > to get > > > > > > the same > > > > > > > > > > > deadlocking error. Ruby 1.8.6 has a bug in the threading > > > > > > > > > > > code > > > > > > that > > > > > > > > > > > causes deadlocks sometimes. > > > > > > > > > > > > Can those of you having this issue please install > > > > > > > > > > > the > > > > > > fastthread gem > > > > > > > > > > > and add require 'fastthread' to the top of your recipe > > > > > > > > > > > files and > > > > > > > > > > > report back please? > > > > > > > > > > > > Thanks > > > > > > > > > > > -- Ezra Zygmuntowicz > > > > > > > > > > > -- Lead Rails Evangelist > > > > > > > > > > > -- [EMAIL PROTECTED] > > > > > > > > > > > -- Engine Yard, Serious Rails Hosting > > > > > > > > > > > -- (866) 518-YARD (9273) --~--~---------~--~----~------------~-------~--~----~ To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/capistrano -~----------~----~----~----~------~----~------~--~---
