Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
I think that you are mixing up a lot of different things and to be honest I am not sure what configuration you have and what exactly you are trying to do. so lets try to simplify it? what type of storage are you working on? which host is the spm? On 04/22/2014 07:36 PM, Tamer Lima wrote: hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 04 virtual machines running and hosted phisicaly on this host server 03 - vdsm : 04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm : none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks
Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
Hi, the solution for this would be either use gluster or another shared storage software across all 3 hosts or go with local storage datacenters. Am 22.04.2014 20:36, schrieb Tamer Lima: hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm :03 virtual machines running and hosted phisicaly on this host server 02 - vdsm :04 virtual machines running and hosted phisicaly on this host server 03 - vdsm :04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm :03 virtual machines running and hosted phisicaly on this host server 02 - vdsm :01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm :none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks ___ 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 -- 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.:
Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
hello, thanks for reply my storage is NFS v3, defined on host 01. My DATA-DOMAIN and ISO-DOMAIN are hosted on host 01; my SPM is located on host 03, I dont remember why. I tried to migrate SPM to host 01 but is not possible. All creation of virtual machine starts on server 01 ( On Wed, Apr 23, 2014 at 5:19 AM, Dafna Ron d...@redhat.com wrote: I think that you are mixing up a lot of different things and to be honest I am not sure what configuration you have and what exactly you are trying to do. so lets try to simplify it? what type of storage are you working on? which host is the spm? On 04/22/2014 07:36 PM, Tamer Lima wrote: hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 04 virtual machines running and hosted phisicaly on this host server 03 - vdsm : 04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm : none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ?
Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
what do you mean that host1 is engine + vdsm, are you using hosted engine? On 04/23/2014 01:59 PM, Tamer Lima wrote: hello, thanks for reply my storage is NFS v3, defined on host 01. My DATA-DOMAIN and ISO-DOMAIN are hosted on host 01; my SPM is located on host 03, I dont remember why. I tried to migrate SPM to host 01 but is not possible. All creation of virtual machine starts on server 01 ( On Wed, Apr 23, 2014 at 5:19 AM, Dafna Ron d...@redhat.com mailto:d...@redhat.com wrote: I think that you are mixing up a lot of different things and to be honest I am not sure what configuration you have and what exactly you are trying to do. so lets try to simplify it? what type of storage are you working on? which host is the spm? On 04/22/2014 07:36 PM, Tamer Lima wrote: hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 04 virtual machines running and hosted phisicaly on this host server 03 - vdsm : 04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm : none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote:
Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
hi, no. is not hosted engine. on server 01 I installed ovirt engine , vdsm, libvirt, postgres , etc using engine-setup . In this machine I have 3 VMs, all running centos65 this server 01 has ovirt web admin (jboss) and there I see all hosts ( server 01, 02 and 03) on the cluster. I can create and manage VM (thin and cloned) tamer Em 23/04/2014, às 10:21, Dafna Ron d...@redhat.com escreveu: what do you mean that host1 is engine + vdsm, are you using hosted engine? On 04/23/2014 01:59 PM, Tamer Lima wrote: hello, thanks for reply my storage is NFS v3, defined on host 01. My DATA-DOMAIN and ISO-DOMAIN are hosted on host 01; my SPM is located on host 03, I dont remember why. I tried to migrate SPM to host 01 but is not possible. All creation of virtual machine starts on server 01 ( On Wed, Apr 23, 2014 at 5:19 AM, Dafna Ron d...@redhat.com mailto:d...@redhat.com wrote: I think that you are mixing up a lot of different things and to be honest I am not sure what configuration you have and what exactly you are trying to do. so lets try to simplify it? what type of storage are you working on? which host is the spm? On 04/22/2014 07:36 PM, Tamer Lima wrote: hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 04 virtual machines running and hosted phisicaly on this host server 03 - vdsm : 04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm : 03 virtual machines running and hosted phisicaly on this host server 02 - vdsm : 01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm : none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com mailto:michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com mailto:tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM,
Re: [ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
hello, I am in trouble I have 3 servers dedicated to test OVIRT: 01- engine + vdsm (8 cpus, 32GB ram , 2TB HD) 02 - vdsm (8 cpus, 32GB ram , 2TB HD) 03 - vdsm (8 cpus, 32GB ram , 2TB HD) I want to create cloned virtual machines but in my configuration I can only save virtual machines on server 01; my configuration refers a DATA DOMAIN on server 01 All my virtual machines are : 2 cpu , 6 GB ram , 500gb HD and were created like CLONE My server 01 is the data domain and all new virtual machine is created, via NFS, on server 01 , who has 2TB maximum capacity ( the same size of partition /sda3 = 2TB) how can I save each virtual machine on a desired vdsm server ? What I want is : server 01 - engine + vdsm :03 virtual machines running and hosted phisicaly on this host server 02 - vdsm :04 virtual machines running and hosted phisicaly on this host server 03 - vdsm :04 virtual machines running and hosted phisicaly on this host but I have this : server 01 - engine + vdsm :03 virtual machines running and hosted phisicaly on this host server 02 - vdsm :01 virtual machines running on this server BUT hosted phisicaly on server 01 server 03 - vdsm :none, because my DATA DOMAIN IS FULL (2TB ) How to solve this problem ? is it possible create one DATA DOMAIN for each VDSM host ? I think this is the solution but I do not know how to point VMs to be saved on specific data domain. thanks On Fri, Apr 18, 2014 at 4:48 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks ___ 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] difference between thin/depentend and clone/dependent vm virtual machine
On Apr 17, 2014, at 16:43 , Tamer Lima tamer.amer...@gmail.com wrote: hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. if you plan to overcommit then go with thin. The drawback is that if you of course hit the physical limit the VMs will run out of space... if you plan to allocate 500GB each, consume all of it, never plan to grow then go with the clone….yes, it's going to take time to write all that stuff. With thin you need to do the same amount of writes, but gradually over time while you're allocating it it hope it helps Thanks, michal Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks ___ 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] difference between thin/depentend and clone/dependent vm virtual machine
On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks ___ 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] difference between thin/depentend and clone/dependent vm virtual machine
hi, thanks for reply I am investigating what is and how thin virtualization works Do you know if HADOOP is indicated to work under thin environment ? On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment) that is, if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less. For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine. Am I correct ? On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek michal.skriva...@redhat.com wrote: On Apr 16, 2014, at 16:41 , Tamer Lima tamer.amer...@gmail.com wrote: Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? yeah, sort of. just google thin provisioning in general:) In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. • Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? the automatic pool, yes Thanks, michal thanks ___ 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
[ovirt-users] difference between thin/depentend and clone/dependent vm virtual machine
Hello, I created VMs by two ways : 1) on tab virtual machines new vm template (centos_65_64bits) 1.1 configuration : I do not select stateless checkbox 1.2 this process takes a 1h30 to create each machine. 2) on tab pools new vm template (centos_65_64bits) 2.1 default configuration : stateless 2.2 Here I created 3 virtual machines at once 2.3 this process takes only one minute On the tab virtual machines I can see all virtual machines. Pooled machines have different icon image and description is different too: machines generated from tab VM are described as clone/dependent - clone is a phisical copy? machines generated from tab POOL are described as thin/independent - thin is a just a reference to template vm ? what is phisical? any configuration file? In practice, what is the difference between these machines ? http://www.ovirt.org/Features/PrestartedVm Today there are 2 types of Vm pools: 1. Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported. 2. Automatic - once the user shuts down the Vm - it returns to the pool (stateless). all vm created from pool are stateless ? thanks ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
