Quoting Johnny Tan jtan@limewire.com:
Urs Rau wrote:
Thanks, I tried this, but no change. I think this was/is possibly just related to the limit of number of loopback interfaces the standard kernel has. And how to increase this. But for me it has no effect on the number of DomU I can run. I only manage Dom0 + 4 after that it just hangs on a xm create and when I hit Ctrl-c it comes back with the error Error: Device creation failed for domain test5.
Assuming you are using the xen packages that came with CentOS-5 (as opposed to downloading XenExpress which I believe has a hard limit of 4 vms), I'm at a loss here too.
Also, it seems you are doing full virtualization (I'm doing para), but I don't see why that would make a difference. Although it might be interesting to see if you could create a paravirt VM.
Either way, hopefully someone more knowledgeable can jump in here.
Are you able to post your Xen config files somewhere as well as an output of /proc/cpuinfo and /proc/meminfo?