So like some others that have posted here I seem to be having a problem getting multicast to work properly. I am using a basic unmanaged switch so I know that it has nothing to do with it. I can multicast successfully to a single PC however when I try to do more than one they just hang on the screen waiting for the image. Like another user posted, if I run the proper tcpdump commands through an ssh session on each client, the multicast then starts working. Not an option for a work around as it is too cumbersome. So I was thinking about running the tcpdump command in the prerun folder as a script, but cannot seem to get that to work either. Any suggestions?
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Not using a shortcut to access DCS. I actually run a terminal session each time. I'm pretty new at Linux in general so tend to follow directions/instructions. I did wonder if that FAQ concerning the scripting was my issue...and if it is I dont' know what to do about it. In other words, how do I format the script and what filename do I assign to it so it will run?
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Multicast is complicated... All the issues we know are on the FAQ/Q&A... I can not find any more reason why it's so weird there...
If you find why, and know how to fix it, please post it so that we can put on the FAQ/Q&A.
Thanks in advance.
Steven.
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Hi,
you say that multicast run as expected when you start a tcpdump command?
So, tell us your kernel version (uname -a).
I've had a similar problem, and an upgrade of the kernel resolve them.
Hope this help.
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Linux Ubuntu 2.6.24-24-Server #1 SMP i686 GNU/Linux
If a kernel upgrade is what I need, can you please include as detailed instructions as possible on the procedures I need to follow as much of this is fairly new to me. Thanks
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If you are familiar with compiling vanilla kernel (or you can find those doc about this), you can compile and install that on your server (remember to install the modules) then, say, if the kernel is"2.6.29-5", then you can run the following to allows your clients to use the new kernel:
/opt/drbl/sbin/mknic-nbi -k 2.6.29-5
On the other hand, if you are not, try to run the latest GNU/Linux as your DRBL server, say, Ubuntu 9.04. It comes with newer kernel.
Steven.
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Thanks to all who responded. I did an upgrade to 8.10 and re-ran the DRBL setup process to incorporate the newer kernel and guess what.... Everything works like a champ....
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Hello,
everybody, I'm newie to this forum
I have exactly the same problem as mentioned by marksgt39 above
Multicast works perfectly with one PC (NTFS XP Clone) but when I tried to add a new one and started cloning both Pcs hung and nothing happened . I had to reboot the PCs and restore one by one.
After hours browsing tons and tons of web pages, it seems that no one has a solution to solve it
And please, tell me which command to type to update the Clonezilla (DRBL) Server ???
Thank you so much
Rehards
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So like some others that have posted here I seem to be having a problem getting multicast to work properly. I am using a basic unmanaged switch so I know that it has nothing to do with it. I can multicast successfully to a single PC however when I try to do more than one they just hang on the screen waiting for the image. Like another user posted, if I run the proper tcpdump commands through an ssh session on each client, the multicast then starts working. Not an option for a work around as it is too cumbersome. So I was thinking about running the tcpdump command in the prerun folder as a script, but cannot seem to get that to work either. Any suggestions?
So broadcast also fails there ?
BTW, maybe the prerun issue is related to this:
http://drbl.sourceforge.net/faq/fine-print.php?path=./2_System/31_prerun_postrun_not_working.faq#31_prerun_postrun_not_working.faq
Steven.
Are you using a desktop shortcut to run DCS?
Not using a shortcut to access DCS. I actually run a terminal session each time. I'm pretty new at Linux in general so tend to follow directions/instructions. I did wonder if that FAQ concerning the scripting was my issue...and if it is I dont' know what to do about it. In other words, how do I format the script and what filename do I assign to it so it will run?
Oh, btw yes the broadcast functionality does not work either..
Multicast is complicated... All the issues we know are on the FAQ/Q&A... I can not find any more reason why it's so weird there...
If you find why, and know how to fix it, please post it so that we can put on the FAQ/Q&A.
Thanks in advance.
Steven.
Hi,
you say that multicast run as expected when you start a tcpdump command?
So, tell us your kernel version (uname -a).
I've had a similar problem, and an upgrade of the kernel resolve them.
Hope this help.
When I run that command the output is:
Linux Ubuntu 2.6.24-24-Server #1 SMP i686 GNU/Linux
If a kernel upgrade is what I need, can you please include as detailed instructions as possible on the procedures I need to follow as much of this is fairly new to me. Thanks
If you are familiar with compiling vanilla kernel (or you can find those doc about this), you can compile and install that on your server (remember to install the modules) then, say, if the kernel is"2.6.29-5", then you can run the following to allows your clients to use the new kernel:
/opt/drbl/sbin/mknic-nbi -k 2.6.29-5
On the other hand, if you are not, try to run the latest GNU/Linux as your DRBL server, say, Ubuntu 9.04. It comes with newer kernel.
Steven.
Under debian:
apt-cache search linux-image
then, simply, apt-get install linux-image-2.6.26-2.** or the 2.6.29 kernel.
Thanks to all who responded. I did an upgrade to 8.10 and re-ran the DRBL setup process to incorporate the newer kernel and guess what.... Everything works like a champ....
Mark,
Thanks for sharing that. I have updated the FAQ to include this discussion.
Steven.
Hello,
everybody, I'm newie to this forum
I have exactly the same problem as mentioned by marksgt39 above
Multicast works perfectly with one PC (NTFS XP Clone) but when I tried to add a new one and started cloning both Pcs hung and nothing happened . I had to reboot the PCs and restore one by one.
After hours browsing tons and tons of web pages, it seems that no one has a solution to solve it
And please, tell me which command to type to update the Clonezilla (DRBL) Server ???
Thank you so much
Rehards
For the multicast problem, please try to read the system log (/var/log/daemon.log, /var/log/messages or /var/log/syslog), I believe you can find some clues.
Also, follow this to check each one by one:
http://drbl.sourceforge.net/faq/fine-print.php?path=./2_System/46_multicast_not_working.faq#46_multicast_not_working.faq
"And please, tell me which command to type to update the Clonezilla (DRBL) Server ???" -> Please check this:
http://drbl.sourceforge.net/one4all/#upgrade
Steven.