(Sorry, meant to say Cloudstack 3.0.x boxes are running CentOS6.2 still...)
On Tue, Dec 10, 2013 at 10:59 AM, Bryan Whitehead <dri...@megahappy.net>wrote: > In all cases these are CentOS boxes. The 3.0.x boxes are still in > CentOS6.x land but the 4.1 Cloudstack boxes are 6.4+updates (as of 6months > ago). > > I don't know if the UUID internal to the VM is generated by cloudstack, > libvirtd, or qemu-kvm. Since the mac addresses have never had a collision I > suspect the UUID is random with a common seed. Just not sure what piece is > doing creating the UUID for a fresh VM. > > > On Mon, Dec 9, 2013 at 10:04 PM, Chiradeep Vittal < > chiradeep.vit...@citrix.com> wrote: > >> What is the OS of the KVM host? >> I believe vm uuids are type 4 uuids and are hence independent of time. >> http://docs.oracle.com/javase/6/docs/api/java/util/UUID.html >> >> >> >> On 12/9/13 12:01 PM, "Bryan Whitehead" <dri...@megahappy.net> wrote: >> >> >I have 3 independent Cloudstack installs. One is 3.0.x and the others are >> >4.1.0. >> > >> >Using KVM (i'm only using KVM so I don't have anything else for >> >comparison), between 3.0.x and 4.1.0 I'm getting instances with UUID's >> >that >> >are the same. >> > >> >I get the UUID by running this on the console (CentOS): >> > >> >dmidecode -s system-uuid >> > >> >Here is example output from 1 host: >> >[root@fortress ~]# dmidecode -s system-uuid >> >C1260F04-F171-3136-85A7-F0B77699DA33 >> >[root@fortress ~]# ifconfig eth0 >> >eth0 Link encap:Ethernet HWaddr 06:9A:36:00:00:AF >> > inet addr:removed Bcast:70.33.251.255 Mask:255.255.255.0 >> > inet6 addr: fe80::49a:36ff:fe00:af/64 Scope:Link >> > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >> > RX packets:20586 errors:0 dropped:0 overruns:0 frame:0 >> > TX packets:1796 errors:0 dropped:0 overruns:0 carrier:0 >> > collisions:0 txqueuelen:1000 >> > RX bytes:1764556 (1.6 MiB) TX bytes:197329 (192.7 KiB) >> > >> > >> >here is another: >> >[root@db-sla01 ~]# dmidecode -s system-uuid >> >C1260F04-F171-3136-85A7-F0B77699DA33 >> >[root@db-sla01 ~]# ifconfig eth0 >> >eth0 Link encap:Ethernet HWaddr 06:5E:9A:00:00:C9 >> > inet addr:removed Bcast:64.13.168.255 Mask:255.255.255.0 >> > inet6 addr: fe80::45e:9aff:fe00:c9/64 Scope:Link >> > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >> > RX packets:7644414 errors:0 dropped:0 overruns:0 frame:0 >> > TX packets:3073765 errors:0 dropped:0 overruns:0 carrier:0 >> > collisions:0 txqueuelen:1000 >> > RX bytes:735505477 (701.4 MiB) TX bytes:519743789 (495.6 MiB) >> > >> >NOTE: The IP's are not in the same nor in the same subnet >> > >> >The time between creation is pretty long... weeks. >> > >> >Any ideas? >> > >> >I've just been killing VM's that have collisions with UUID's but it >> >happens >> >pretty often. >> > >> >-Bryan >> >> >
