Re: [ovirt-users] oVirt HA.
On 28/04/15 16:20, Dan Yasny wrote: HA does not mean multiple running instances of the same service. It means if the service is gone, it will automatically be restored on a working server. That is a pretty narrow definition of HA, which is not shared by most parts of the community (and the world), leading to much confusion of users on this very ML. HA in general means your service downtime gets minimized, today mostly realized through load balancing and clustering software services. just restarting a service (in this case ovirt-engine vm) on a different host is not what todays user expect under the term HA imho. in theory it should be possible as a design goal to make multiple ovirt-engine share one remote data base (remote database support is already there). I think this would be a huge feature for ovirt, but also requires quite some design and coding to be done. thus adding the devel list. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] removing neutron networks
- Original Message - From: Jorick Astrego j.astr...@netbulae.eu To: users@ovirt.org Sent: Wednesday, April 29, 2015 6:32:29 PM Subject: [ovirt-users] removing neutron networks Hi, After my update to 3.5.2 final, I started messing about with the Neutron integration again. I created and removed several networks but the list keeps adding each new network when I use import, the old ones still remain. 2015-04-29 17:28:21,293 INFO [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Running command: RemoveNetworkCommand internal: false. Entities affected : ID: 4526582c-eef6-4562-97ad-facdf4590356 Type: NetworkAction group CONFIGURE_STORAGE_POOL_NETWORK with role type ADMIN 2015-04-29 17:28:21,545 ERROR [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Command org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand throw Vdc Bll exception. With error message VdcBLLException: (Failed with error PROVIDER_FAILURE and code 5050) 2015-04-29 17:28:21,548 INFO [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Command [id=163db1a8-d281-43e7-8bc1-a5229ffe4555]: Compensating DELETED_OR_UPDATED_ENTITY of org.ovirt.engine.core.common.businessentities.network.Network; snapshot: id=4526582c-eef6-4562-97ad-facdf4590356. 2015-04-29 17:28:21,598 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Correlation ID: 58f7886b, Call Stack: null, Custom Event ID: -1, Message: Failed to remove Network EN_uplink from Data Center: Netbulae And in neutron server.log: 2015-04-29 19:28:23.347 1027 INFO neutron.api.v2.resource [req-44768a7f-7443-4da7-b162-c91b3f8d78d3 None] delete failed (client error): Network 36a7a012-d94c-4a0f-b369-47d1d04f5942 could not be found When I check in Neutron, there are only two listed. neutron net-list +--+-+---+ | id | name | subnets | +--+-+---+ | 66ef5f7f-b0d1-4ef9-8b5e-d7a7aa315d58 | public | | 37ea25da-68a1-478b-ab30-8cf6ad104ccb ***.***.***.**/26 | | 5e90abfb-19c1-4b09-b387-8f2b815cad30 | private | | 60f29e92-5461-4eba-a375-4016bc4c6f39 172.17.0.0/24 | +--+-+---+ So it appears oVirt doesn't handle things correctly when I remove the networks from neutron directly. If you've removed the network from neutron directly, you should uncheck the option in the 'Remove network' dialog which says Remove network(s) from the external provider(s) as well.. In that case ovirt won't attempt to access the provider and remove the network from it. Met vriendelijke groet, With kind regards, Jorick Astrego Netbulae Virtualization Experts Tel: 053 20 30 270i...@netbulae.euStaalsteden 4-3AKvK 08198180 Fax: 053 20 30 271 www.netbulae.eu 7547 TA Enschede BTW NL821234584B01 ___ 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: [ovirt-users] oVirt HA.
There is always room for improvement, but think about it: ever since SolidICE, there has been a demand to minimize the amount of hardware used in a minimalistic setup, thus the hosted engine project. And now that we have it, all of a sudden, we need to provide a way to make multiple engines work in active/passive mode? If that capability is provided, I'm sure a new demand will arise, asking for active/active engines, infinitely scalable, and so on. The question really is, where the line is drawn. The engine downtime can be a few minutes, it's not that critical in setups of hundreds of hosts. oVirt's raison d'etre is to make VMs run, everything else is just plumbing around that. So as long as the engine doesn't just die, and it comes back up automatically, this is fine, since the engine is plumbing, not the critical service running inside the VMs. There are plenty of more important features to work on, IMHO. As for the definition of HA, this is exactly it, please don't mix it with LB and FT, those are all very different concepts. //just my $0.02 of course. Dan - Original Message - From: Sven Kieske s.kie...@mittwald.de To: users@ovirt.org Sent: Wednesday, April 29, 2015 6:56:24 AM Subject: Re: [ovirt-users] oVirt HA. On 29/04/15 10:48, Kapetanakis Giannis wrote: If ovirt-engine restarts this does not mean that you have a downtime in your service. The VMs and nodes already running will not be affected... So your infrastructure will still be operational while you restart the engine. Of course, but all operations federated through the engine will have a downtime. these are: starting, (hard)stopping, deleting, creating vms, etc. furthermore regarding hosted-engine: you don't just have to wait for the service to restart (that's almost always a matter of seconds) but for the whole vm to boot, which takes much more time and more things can go wrong during this process. So I think there is still room for improvement. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen ___ 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: [ovirt-users] [ovirt-devel] oVirt HA.
On 04/29/2015 10:39 AM, Sven Kieske wrote: On 28/04/15 16:20, Dan Yasny wrote: HA does not mean multiple running instances of the same service. It means if the service is gone, it will automatically be restored on a working server. That is a pretty narrow definition of HA, which is not shared by most parts of the community (and the world), leading to much confusion of users on this very ML. HA in general means your service downtime gets minimized, today mostly realized through load balancing and clustering software services. just restarting a service (in this case ovirt-engine vm) on a different host is not what todays user expect under the term HA imho. in theory it should be possible as a design goal to make multiple ovirt-engine share one remote data base (remote database support is already there). I think this would be a huge feature for ovirt, but also requires quite some design and coding to be done. thus adding the devel list. Please open RFE with this and we can consider that for future versions. -- Yaniv Dary Technical Product Manager Red Hat Israel Ltd. 34 Jerusalem Road Building A, 4th floor Ra'anana, Israel 4350109 Tel : +972 (9) 7692306 8272306 Email: yd...@redhat.com IRC : ydary ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] [Discussion] Office Hours for oVirt Community
All: There has been some discussion lately of dropping the weekly status/sync meeting on Wednesdays in favor of a less formal set of IRC office hour sessions. The current suggestion is that these office hours will be held for set half-hour periods, moderated by a rotation of community members. Discussions should be open, answering all questions and discussing any cross-team/community-wide issues as needed. Tentatively, these would be held twice a week, Tuesdays and Thursdays. Probably one set for an optimal West Asia/Europe time slot, and another more suited for North and South America. Ideally, a potential third meeting time would help cover East Asia and Australia. Thoughts on this are welcome... we would like to move forward with the new format in May. Peace, Brian ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] [Discussion] Office Hours for oVirt Community
On 29/04/15 15:49, Brian Proffitt wrote: All: There has been some discussion lately of dropping the weekly status/sync meeting on Wednesdays in favor of a less formal set of IRC office hour sessions. The current suggestion is that these office hours will be held for set half-hour periods, moderated by a rotation of community members. Discussions should be open, answering all questions and discussing any cross-team/community-wide issues as needed. Tentatively, these would be held twice a week, Tuesdays and Thursdays. Probably one set for an optimal West Asia/Europe time slot, and another more suited for North and South America. Ideally, a potential third meeting time would help cover East Asia and Australia. Thoughts on this are welcome... we would like to move forward with the new format in May. I think this might actually improve the situation. today I have the impression there are many times questions asked via IRC when no one is really online and no one can answer them, but even if you say: post this to the ML or to BZ, those questions/bugs to tend to not show there up. I just fear that half an hour might be a really short time if you have a hard problem, but otoh you at least get the initial discussion kicked of and can follow up on that via mail or bugzilla or further irc sessions. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] removing neutron networks
Hi, After my update to 3.5.2 final, I started messing about with the Neutron integration again. I created and removed several networks but the list keeps adding each new network when I use import, the old ones still remain. 2015-04-29 17:28:21,293 INFO [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Running command: RemoveNetworkCommand internal: false. Entities affected : ID: 4526582c-eef6-4562-97ad-facdf4590356 Type: NetworkAction group CONFIGURE_STORAGE_POOL_NETWORK with role type ADMIN 2015-04-29 17:28:21,545 ERROR [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Command org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand throw Vdc Bll exception. With error message VdcBLLException: (Failed with error PROVIDER_FAILURE and code 5050) 2015-04-29 17:28:21,548 INFO [org.ovirt.engine.core.bll.network.dc.RemoveNetworkCommand] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Command [id=163db1a8-d281-43e7-8bc1-a5229ffe4555]: Compensating DELETED_OR_UPDATED_ENTITY of org.ovirt.engine.core.common.businessentities.network.Network; snapshot: id=4526582c-eef6-4562-97ad-facdf4590356. 2015-04-29 17:28:21,598 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (org.ovirt.thread.pool-8-thread-45) [58f7886b] Correlation ID: 58f7886b, Call Stack: null, Custom Event ID: -1, Message: Failed to remove Network EN_uplink from Data Center: Netbulae And in neutron server.log: 2015-04-29 19:28:23.347 1027 INFO neutron.api.v2.resource [req-44768a7f-7443-4da7-b162-c91b3f8d78d3 None] delete failed (client error): Network 36a7a012-d94c-4a0f-b369-47d1d04f5942 could not be found When I check in Neutron, there are only two listed. neutron net-list +--+-+---+ | id | name| subnets | +--+-+---+ | 66ef5f7f-b0d1-4ef9-8b5e-d7a7aa315d58 | public | 37ea25da-68a1-478b-ab30-8cf6ad104ccb ***.***.***.**/26 | | 5e90abfb-19c1-4b09-b387-8f2b815cad30 | private | 60f29e92-5461-4eba-a375-4016bc4c6f39 172.17.0.0/24| +--+-+---+ So it appears oVirt doesn't handle things correctly when I remove the networks from neutron directly. Met vriendelijke groet, With kind regards, Jorick Astrego Netbulae Virtualization Experts Tel: 053 20 30 270 i...@netbulae.euStaalsteden 4-3A KvK 08198180 Fax: 053 20 30 271 www.netbulae.eu 7547 TA Enschede BTW NL821234584B01 ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Regarding backing up of a VM
- Original Message - From: Hemanth Nalluri nallurihema...@gmail.com To: Maor Lipchuk mlipc...@redhat.com Cc: users@ovirt.org Sent: Thursday, April 30, 2015 7:16:34 AM Subject: Re: [ovirt-users] Regarding backing up of a VM Hello Maor, I am worried, What happens if the storage domain fails. i.e what if the harddisk where the storage domain is residing fails?. to avoid this you can either use option number 3 (export domain) or use a template and copy the disks to several different Storage Domains I just wanted to have a external backup. If you can use an external backup to backup only your Storage Domains on the storage server, then you can use the Import Storage Domain feature more safely, since if, at any time, your Storage Domain will be ruined, you can create a new setup and import it the backed-up Storage Domain. Regards Hemanth Thanks Regards Hemanth Nalluri +91 973 999 3635 On Thu, Apr 30, 2015 at 9:05 AM, Maor Lipchuk mlipc...@redhat.com wrote: Hi Hemanth, What is the purpose you want to backup your VM? Today, there are several ways you can backup a VM: 1. Create a snapshot - This way you backup your VM state and the data on the disks at a specific point in time while the VM can be running or not, the backup of the VM's disks will be reside on the same Storage Domain which the disks are reside on. 2. Create a Template - It will preserve the VM configuration (memory and CPU) and also the disks, though it is a copy operation which might take time and the VM should be shut down in the process 3. Export the VM to an export domain - This way your VM will be backed up in a different special Storage Domain, which can be moved between different setups and Data Centers. Your VM should be shutdown for this and this is also a copy operation which might be time consuming. 4. Import Storage Domain - A new feature introduced in oVirt 3.5 is import Storage Domain, which intends to support disaster recovery to your oVirt setup. One of its major features is that it backs up automatically, every 60 minutes, your VM's data in the Disks' Storage Domains. The feature is only supported in 3.5 Data Center or up. see at http://www.ovirt.org/Features/ImportStorageDomain for more details. To see how to use it you can check out the following links: http://www.ovirt.org/Features/ImportStorageDomain#Work_flow_for_detach_and_attach_Storage_Domain_with_entities_-_UI_flow https://www.youtube.com/watch?v=DLcxDB0MY38 Regards, Maor - Original Message - From: Hemanth Nalluri nallurihema...@gmail.com To: users@ovirt.org Sent: Wednesday, April 29, 2015 7:48:41 AM Subject: [ovirt-users] Regarding backing up of a VM Hello All, Can any one help me / tell me the steps to take a backup of a existing VM?. Thanks In Advance!. Thanks Regards Hemanth Nalluri +91 973 999 3635 ___ 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: [ovirt-users] Regarding backing up of a VM
Hi Hemanth, What is the purpose you want to backup your VM? Today, there are several ways you can backup a VM: 1. Create a snapshot - This way you backup your VM state and the data on the disks at a specific point in time while the VM can be running or not, the backup of the VM's disks will be reside on the same Storage Domain which the disks are reside on. 2. Create a Template - It will preserve the VM configuration (memory and CPU) and also the disks, though it is a copy operation which might take time and the VM should be shut down in the process 3. Export the VM to an export domain - This way your VM will be backed up in a different special Storage Domain, which can be moved between different setups and Data Centers. Your VM should be shutdown for this and this is also a copy operation which might be time consuming. 4. Import Storage Domain - A new feature introduced in oVirt 3.5 is import Storage Domain, which intends to support disaster recovery to your oVirt setup. One of its major features is that it backs up automatically, every 60 minutes, your VM's data in the Disks' Storage Domains. The feature is only supported in 3.5 Data Center or up. see at http://www.ovirt.org/Features/ImportStorageDomain for more details. To see how to use it you can check out the following links: http://www.ovirt.org/Features/ImportStorageDomain#Work_flow_for_detach_and_attach_Storage_Domain_with_entities_-_UI_flow https://www.youtube.com/watch?v=DLcxDB0MY38 Regards, Maor - Original Message - From: Hemanth Nalluri nallurihema...@gmail.com To: users@ovirt.org Sent: Wednesday, April 29, 2015 7:48:41 AM Subject: [ovirt-users] Regarding backing up of a VM Hello All, Can any one help me / tell me the steps to take a backup of a existing VM?. Thanks In Advance!. Thanks Regards Hemanth Nalluri +91 973 999 3635 ___ 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: [ovirt-users] Regarding backing up of a VM
Hello Maor, I am worried, What happens if the storage domain fails. i.e what if the harddisk where the storage domain is residing fails?. I just wanted to have a external backup. Regards Hemanth Thanks Regards Hemanth Nalluri +91 973 999 3635 On Thu, Apr 30, 2015 at 9:05 AM, Maor Lipchuk mlipc...@redhat.com wrote: Hi Hemanth, What is the purpose you want to backup your VM? Today, there are several ways you can backup a VM: 1. Create a snapshot - This way you backup your VM state and the data on the disks at a specific point in time while the VM can be running or not, the backup of the VM's disks will be reside on the same Storage Domain which the disks are reside on. 2. Create a Template - It will preserve the VM configuration (memory and CPU) and also the disks, though it is a copy operation which might take time and the VM should be shut down in the process 3. Export the VM to an export domain - This way your VM will be backed up in a different special Storage Domain, which can be moved between different setups and Data Centers. Your VM should be shutdown for this and this is also a copy operation which might be time consuming. 4. Import Storage Domain - A new feature introduced in oVirt 3.5 is import Storage Domain, which intends to support disaster recovery to your oVirt setup. One of its major features is that it backs up automatically, every 60 minutes, your VM's data in the Disks' Storage Domains. The feature is only supported in 3.5 Data Center or up. see at http://www.ovirt.org/Features/ImportStorageDomain for more details. To see how to use it you can check out the following links: http://www.ovirt.org/Features/ImportStorageDomain#Work_flow_for_detach_and_attach_Storage_Domain_with_entities_-_UI_flow https://www.youtube.com/watch?v=DLcxDB0MY38 Regards, Maor - Original Message - From: Hemanth Nalluri nallurihema...@gmail.com To: users@ovirt.org Sent: Wednesday, April 29, 2015 7:48:41 AM Subject: [ovirt-users] Regarding backing up of a VM Hello All, Can any one help me / tell me the steps to take a backup of a existing VM?. Thanks In Advance!. Thanks Regards Hemanth Nalluri +91 973 999 3635 ___ 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
