def interfaceDevice(host, vmid, iface, failSilent=False):
"""
Returns the name of the host device for the given interface
Note: Proxmox changes the names of the interface devices with every
release of qemu-server. Here the current list of naming schemes:
qemu-server 1.1-22 vmtab1000i0
qemu-server 1.1-25 vmtab1000i0d0
qemu-server 1.1-28 tap1000i0d0 or tap1000i0
Due to this naming chaos the name must determined on the host with a
command, so this can only be determined for started devices.
@param iface: interface object
@type iface: generic.Interface
@return: name of host device
@rtype: string
"""
iface_id = int(re.match("eth(\d+)", iface).group(1))
assert getState(host, vmid) == generic.State.STARTED, "Cannot determine KVM host device names when not running"
for name in ["vmtab%(vmid)di%(iface_id)d", "vmtab%(vmid)di%(iface_id)dd0", "tap%(vmid)di%(iface_id)d", "tap%(vmid)di%(iface_id)dd0"]:
name = name % { "vmid": vmid, "iface_id": iface_id }
if fileutil.existsDir(host, "/sys/class/net/%s" % name):
return name
assert failSilent, "Failed to determine kvm interface name for %s.%s" % (vmid, iface)
return None
def getState(endpoint): assert _isEndpoint(endpoint) host = endpoint.getHost() assert host if not fileutil.existsDir(host, _configDir(endpoint)): return generic.State.CREATED if not fileutil.existsFile(host, _pidFile(endpoint)): return generic.State.PREPARED if not process.processRunning(host, _pidFile(endpoint), "tincd"): return generic.State.PREPARED return generic.State.STARTED
def interfaceExists(host, iface): import fileutil return fileutil.existsDir(host, "/sys/class/net/%s" % util.identifier(iface))
def bridgeExists(host, bridge): import fileutil return fileutil.existsDir(host, "/sys/class/net/%s/brif" % util.identifier(bridge))