Facter 1.3.8 has a module called ipmess.rb that does not handle interface names with decimals, hence Xen virtual interfaces names get truncated. Therefore, dubious errors are displayed when ipmess.rb goes to do an ifconfig on interface vif3 instead of vif3.0.
Example:
Output of ifconfig -a to show Xen virtual interfaces
# ifconfig -a (output has been shorten for brevity)
vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vif0.2 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vif0.3 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Output to show facter version and errors
# facter -v
vif0: error fetching interface information: Device not found
vif0: error fetching interface information: Device not found
vif0: error fetching interface information: Device not found
vif0: error fetching interface information: Device not found
vif1: error fetching interface information: Device not found
vif2: error fetching interface information: Device not found
vif3: error fetching interface information: Device not found
vif7: error fetching interface information: Device not found
1.3.8
Proposed patch:
*** ipmess.rb 2007-09-24 03:00:05.000000000 -0400
--- /tmp/ipmess.rb 2007-11-04 17:00:44.000000000 -0500
***************
*** 21,27 ****
output = %x{/sbin/ifconfig -a}
int = nil
! output.scan(/^(\w+)(\d+)/) { |str|
output_int = %x{/sbin/ifconfig #{str}}
int = "#{str}"
tmp1 = nil
--- 21,27 ----
output = %x{/sbin/ifconfig -a}
int = nil
! output.scan(/^(\w+)(\d+)(\.?)(\d+)*/) { |str|
output_int = %x{/sbin/ifconfig #{str}}
int = "#{str}"
tmp1 = nil
