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I'm a newbie to Xen, and I've recently installed Xen 4.2 by sources on my system. I've found a strange thing I've a VM when I start it via the command "xm create machine.cfg" all work fine, but if I use "xl create machine.cfg" it gives me the following error

xc: error: panic: xc_dom_core.c:442: xc_dom_alloc_segment: segment ramdisk too large (0x4ba > 0x2000 - 0x1bd9 pages): Out of memory libxl: error: libxl_dom.c:208:libxl__build_pv xc_dom_build_image failed: Invalid argument cannot (re-)build domain: -3 xenconsole: Could not read tty from store: No such file or directory

What could be the problem? Any idea?

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3 Answers 3

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Apparently I've solved the problem simply adding the memory specification in the configuration file.

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In this case, your system seems to complain about too few RAM being available for your new VM which is started with the configuration file "machine.cfg". (I assume that machine.cfg and macchina.cfg differ from each other and are not the same.)

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  • No I made a typo. I edited the question.
    – Giorgio Mossa
    Mar 18, 2012 at 15:09
  • I suggest to run strace -f -e trace=open xl create machine.cfg and look if really your desired config file is being used.
    – PythonLearner
    Mar 18, 2012 at 15:11
  • I did, but it seems that it's seeing the correct file infact it's loading the correct kernel and initrd.
    – Giorgio Mossa
    Mar 18, 2012 at 15:35
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Check if your DOM0 have installed kernel version apropiated for the VM version if not install the needed version for the DOMU in the boot directory of DOM0.

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