|Using multicast clone on Clonezilla SE, for one client the speed is fast, but more than one, it's very slow. Any idea ?|
|Normally when imaging one client machine, say the rate is 1000 MB/min, with more than one, the rate should be still similar to 1000 MB/min. If this is not your case, please check:
- The network switch. Make sure it works well for multicast packets. Try to replace a different brand of switch then test it again. We do have experience with some of the 24-port gigabits switch with very poor performance when multicast restoring (~150 MB/min). With another 8 gigabits switch, it works very well (~2 GB/min).
- Make sure all your clients have flawless network cards and hard drives. Due to the multicast mechanism, if one of your clients has buggy network card or hard drive, it will make all the machines clone slowly.
- Make sure your GNU/Linux uses the right kernel module for your network card. For example, someone reported that on his Clonezilla SE server, the system always uses kernel module r8169 for his network card when booting. However, module r8101 is the right one. Therefore he has to "rmmod r8169" then "modprobe r8101".
- Some weird cases... Some repored that if LAN boot is on in the machine's BIOS, even it's not power-on, that client still bothers the multicast clone. He has to unplug that client machine. BTW, the client machine comes with Intel(R) 82567LM Gigabit network card.
Ref: http://groups.google.com.tw/group/drbl/browse_thread/thread/d87fbe17afea174c?hl=zh-TW (Chinese)
If all the above does not apply, maybe you can try to tune the config on your Clonezilla SE, by modifying this file "/etc/drbl/drbl-ocs.conf", change