Re: [Users] mac address re-use
On Tue, 8 Jan 2013 06:29:49 + Karli Sjöberg karli.sjob...@slu.se wrote: tis 2013-01-08 klockan 01:18 -0500 skrev Yair Zaslavsky: Keith summed things quite right as far as I know (I did not know about the range allocated to Qumranet) From code perspective - We have a MacPoolManager infrastructure which holds a pool of Mac addresses, and per deletion of VM, the mac address is returned to the pool. Which means that if you set up two oVirt systems independantly; one for production and one for testing, you will get collisions? ^^^ No, VLANs please! If you need equal IP/ethernet setup while using 2 ovirt-engines, check VRF (OpenBSD can do it). jbelka ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[Users] mac address re-use
my 3.2 install seems to be reusing mac address of formerly-deleted guests. is this the normal behavior, and or can i turn this off? i would prefer to have a unique mac address for each new VM created. thanks, jonathan This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind SKOPOS to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] mac address re-use
On 01/07/2013 05:22 PM, Jonathan Horne wrote: my 3.2 install seems to be reusing mac address of formerly-deleted guests. is this the normal behavior, and or can i turn this off? i would prefer to have a unique mac address for each new VM created. thanks, jonathan This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind SKOPOS to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users I believe re-use is intentional. I suspect oVirt uses the IEEE [1] space allocated to Qumranet and that space is relatively small. There were previous discussions on the list regarding the probability of collisions/exhaustion, IIRC. In any case, you want re-use to prevent the possibility of exhaustion and because a program shouldn't just go randomly creating addresses from any available OUI block. Cheers, Keith [1] http://standards.ieee.org/develop/regauth/oui/public.html ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] mac address re-use
Keith summed things quite right as far as I know (I did not know about the range allocated to Qumranet) From code perspective - We have a MacPoolManager infrastructure which holds a pool of Mac addresses, and per deletion of VM, the mac address is returned to the pool. - Original Message - From: Keith Robertson krobe...@redhat.com To: Jonathan Horne jho...@skopos.us Cc: users users@ovirt.org Sent: Tuesday, January 8, 2013 5:15:04 AM Subject: Re: [Users] mac address re-use On 01/07/2013 05:22 PM, Jonathan Horne wrote: my 3.2 install seems to be reusing mac address of formerly-deleted guests. is this the normal behavior, and or can i turn this off? i would prefer to have a unique mac address for each new VM created. thanks, jonathan This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind SKOPOS to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users I believe re-use is intentional. I suspect oVirt uses the IEEE [1] space allocated to Qumranet and that space is relatively small. There were previous discussions on the list regarding the probability of collisions/exhaustion, IIRC. In any case, you want re-use to prevent the possibility of exhaustion and because a program shouldn't just go randomly creating addresses from any available OUI block. Cheers, Keithן [1] http://standards.ieee.org/develop/regauth/oui/public.html ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] mac address re-use
tis 2013-01-08 klockan 01:18 -0500 skrev Yair Zaslavsky: Keith summed things quite right as far as I know (I did not know about the range allocated to Qumranet) From code perspective - We have a MacPoolManager infrastructure which holds a pool of Mac addresses, and per deletion of VM, the mac address is returned to the pool. Which means that if you set up two oVirt systems independantly; one for production and one for testing, you will get collisions? /Karli From: Keith Robertson krobe...@redhat.com To: Jonathan Horne jho...@skopos.us Cc: users users@ovirt.org Sent: Tuesday, January 8, 2013 5:15:04 AM Subject: Re: [Users] mac address re-use On 01/07/2013 05:22 PM, Jonathan Horne wrote: my 3.2 install seems to be reusing mac address of formerly-deleted guests. is this the normal behavior, and or can i turn this off? i would prefer to have a unique mac address for each new VM created. thanks, jonathan This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind SKOPOS to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ___ Users mailing list Users@ovirt.orgmailto:Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users I believe re-use is intentional. I suspect oVirt uses the IEEE [1] space allocated to Qumranet and that space is relatively small. There were previous discussions on the list regarding the probability of collisions/exhaustion, IIRC. In any case, you want re-use to prevent the possibility of exhaustion and because a program shouldn't just go randomly creating addresses from any available OUI block. Cheers, Keithן [1] http://standards.ieee.org/develop/regauth/oui/public.html ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] mac address re-use
You can always set a new range of mac addresses using - engine-config -g MacPoolRanges (to see the current range) and then engine-config -s MacPoolRanges=new range - Original Message - From: Karli Sjöberg karli.sjob...@slu.se To: Yair Zaslavsky yzasl...@redhat.com Cc: Keith Robertson krobe...@redhat.com, users users@ovirt.org Sent: Tuesday, January 8, 2013 8:29:49 AM Subject: Re: [Users] mac address re-use tis 2013-01-08 klockan 01:18 -0500 skrev Yair Zaslavsky: Keith summed things quite right as far as I know (I did not know about the range allocated to Qumranet) From code perspective - We have a MacPoolManager infrastructure which holds a pool of Mac addresses, and per deletion of VM, the mac address is returned to the pool. Which means that if you set up two oVirt systems independantly; one for production and one for testing, you will get collisions? /Karli From: Keith Robertson krobe...@redhat.com To: Jonathan Horne jho...@skopos.us Cc: users users@ovirt.org Sent: Tuesday, January 8, 2013 5:15:04 AM Subject: Re: [Users] mac address re-use On 01/07/2013 05:22 PM, Jonathan Horne wrote: my 3.2 install seems to be reusing mac address of formerly-deleted guests. is this the normal behavior, and or can i turn this off? i would prefer to have a unique mac address for each new VM created. thanks, jonathan This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind SKOPOS to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users I believe re-use is intentional. I suspect oVirt uses the IEEE [1] space allocated to Qumranet and that space is relatively small. There were previous discussions on the list regarding the probability of collisions/exhaustion, IIRC. In any case, you want re-use to prevent the possibility of exhaustion and because a program shouldn't just go randomly creating addresses from any available OUI block. Cheers, Keithן [1] http://standards.ieee.org/develop/regauth/oui/public.html ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
