1. Create domain from XML (note vnc port):
<domain type="xen">
<name>lvnc</name>
<os>
<type>linux</type>
<kernel>/boot/vmlinuz-2.6.15-1.43_FC5guest</kernel>
<initrd>/boot/initrd-2.6.15-1.43_FC5guest.img</initrd>
<root>/dev/sda1</root>
<cmdline> ro selinux=0 3</cmdline>
</os>
<memory>10</memory>
<vcpu>1</vcpu>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<graphics type="vnc" port="5905"/>
</devices>
</domain>
2. Examine s-expr definition:
sudo /usr/sbin/xm list -l lvnc
(domain
(on_crash restart)
(uuid 5c56456a-1f19-d996-35e3-f5e514b79601)
(bootloader_args )
(vcpus 1)
(name lvnc)
(on_poweroff destroy)
(on_reboot restart)
(bootloader )
(maxmem 128)
(memory 128)
(shadow_memory 0)
(features )
(on_xend_start ignore)
(on_xend_stop ignore)
(image
(linux
(kernel /boot/vmlinuz-2.6.15-1.43_FC5guest)
(ramdisk /boot/initrd-2.6.15-1.43_FC5guest.img)
(args 'root=/dev/sda1 ro selinux=0 3')
(device_model /usr/lib/xen/bin/qemu-dm)
)
)
(status 0)
(device (vkbd (uuid c1ea89ea-903c-ba5b-603d-7b5c7bc25654)))
(device
(vfb
(type vnc)
(vncdisplay 5)
(uuid bc92b909-8ca3-eece-8ef5-7551eaccda6e)
)
)
)
So far, so good: vncdisplay 5
3. dumpxml lvnc
<domain type='xen' id='-1'>
<name>lvnc</name>
<uuid>5c56456a-1f19-d996-35e3-f5e514b79601</uuid>
<bootloader/>
<os>
<type>linux</type>
<kernel>/boot/vmlinuz-2.6.15-1.43_FC5guest</kernel>
<initrd>/boot/initrd-2.6.15-1.43_FC5guest.img</initrd>
<cmdline>root=/dev/sda1 ro selinux=0 3</cmdline>
</os>
<memory>131072</memory>
<vcpu>1</vcpu>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<input type='mouse' bus='xen'/>
<graphics type='vnc' port='-1'/>
</devices>
</domain>
As you can see, port is now -1 instead of expected 5905.
Looks like the problem around 'vncunused' variable handling in
xml_internal.c. (I
think it should be assigned 0 not 1 by default and if 'vncunused'
config keyword
is not found. I tried to fix it myself, but without much luck so far. By the way, what would be a good way to do logging in libvirt code? Sincerely, Vadim -- "La perfection est atteinte non quand il ne reste rien a ajouter, mais quand il ne reste rien a enlever." (Antoine de Saint-Exupery)
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