[ovirt-users] Re: VDSM Hooks during migration
Hey Milan, I guess we will have to look into it further. Thank you. Sent from my iPhone > On 27 Aug 2019, at 11:39, Milan Zamazal wrote: > > Milan Zamazal writes: > >> "Vrgotic, Marko" writes: >> >>> What I am aiming for is following: >>> We have a nauseate hook which deletes dns records from DNS server, for of a >>> VM “destroyed”. >>> That is just as we wanted it, except in a case of Migration, which is >>> also a “destructive” action, looking from perspective of a Hypervisor. >>> I was testing an order of Hooks triggered when I issue VM Migrate, in >>> order to discover which Hook I can use to trigger update of the >>> records for a VM that is Migrated. >>> >>> Seems that “after_vm_destroy” is the last in order hook to be executed >>> when VM is migrated, and I wanted to verify that. >> >> Hi Marko, I see, I understand now what's your problem. after_vm_destroy >> is called on the source while after_vm_migrate_destination on the >> destination and I don't think there is any guarantee in which order they >> are mutually called. >> >>> How come that there is no hook which enables VM start or continue on a >>> destination hypervisor, after VM is migrated? Or am I missing >>> something? >> >> after_vm_migrate_destination is called on the destination, but see >> above. A possible solution could be to look in the domain XML passed to >> after_vm_destroy, there should be an exit reason in the metadata >> section. If the reason is migration, then you can skip your delete >> action. > > Hm, it seems there is no exit info after migration. Another idea is to > put something into after_vm_migrate_source hook that would prevent the > record deletion. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/Y2U6P37BSJFGYGHMJQ7F6ONQB7RECHEZ/
[ovirt-users] Re: VDSM Hooks during migration
Milan Zamazal writes: > "Vrgotic, Marko" writes: > >> What I am aiming for is following: >> We have a nauseate hook which deletes dns records from DNS server, for of a >> VM “destroyed”. >> That is just as we wanted it, except in a case of Migration, which is >> also a “destructive” action, looking from perspective of a Hypervisor. >> I was testing an order of Hooks triggered when I issue VM Migrate, in >> order to discover which Hook I can use to trigger update of the >> records for a VM that is Migrated. >> >> Seems that “after_vm_destroy” is the last in order hook to be executed >> when VM is migrated, and I wanted to verify that. > > Hi Marko, I see, I understand now what's your problem. after_vm_destroy > is called on the source while after_vm_migrate_destination on the > destination and I don't think there is any guarantee in which order they > are mutually called. > >> How come that there is no hook which enables VM start or continue on a >> destination hypervisor, after VM is migrated? Or am I missing >> something? > > after_vm_migrate_destination is called on the destination, but see > above. A possible solution could be to look in the domain XML passed to > after_vm_destroy, there should be an exit reason in the metadata > section. If the reason is migration, then you can skip your delete > action. Hm, it seems there is no exit info after migration. Another idea is to put something into after_vm_migrate_source hook that would prevent the record deletion. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/ZN7VICHDVFMDPDOG4HKF3SVP2PAA4MDZ/
[ovirt-users] Re: VDSM Hooks during migration
"Vrgotic, Marko" writes: > What I am aiming for is following: > We have a nauseate hook which deletes dns records from DNS server, for of a > VM “destroyed”. > That is just as we wanted it, except in a case of Migration, which is > also a “destructive” action, looking from perspective of a Hypervisor. > I was testing an order of Hooks triggered when I issue VM Migrate, in > order to discover which Hook I can use to trigger update of the > records for a VM that is Migrated. > > Seems that “after_vm_destroy” is the last in order hook to be executed > when VM is migrated, and I wanted to verify that. Hi Marko, I see, I understand now what's your problem. after_vm_destroy is called on the source while after_vm_migrate_destination on the destination and I don't think there is any guarantee in which order they are mutually called. > How come that there is no hook which enables VM start or continue on a > destination hypervisor, after VM is migrated? Or am I missing > something? after_vm_migrate_destination is called on the destination, but see above. A possible solution could be to look in the domain XML passed to after_vm_destroy, there should be an exit reason in the metadata section. If the reason is migration, then you can skip your delete action. Regards, Milan ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/LXYRA7X36224LHUPIPSUMGCDN5OFNZFC/
[ovirt-users] Re: VDSM Hooks during migration
and Thank you for the update, it’s good to re-read pages once in a while. Sent from my iPhone > On 26 Aug 2019, at 17:30, Milan Zamazal wrote: > > "Vrgotic, Marko" writes: > >> Would you be so kind to help me/tell me or point me how to find which >> Hooks, and in which order, are triggered when VM is being migrated? > > See "VDSM and Hooks" appendix of oVirt Admin Guide: > > https://ovirt.org/documentation/admin-guide/appe-VDSM_and_Hooks.html > > Regards, > Milan ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/YOW2K3SDLECUKOFJAOEIWPHE5LGAMUNH/
[ovirt-users] Re: VDSM Hooks during migration
Hi Milan, Thank you, I was aware of the page. What I am aiming for is following: We have a nauseate hook which deletes dns records from DNS server, for of a VM “destroyed”. That is just as we wanted it, except in a case of Migration, which is also a “destructive” action, looking from perspective of a Hypervisor. I was testing an order of Hooks triggered when I issue VM Migrate, in order to discover which Hook I can use to trigger update of the records for a VM that is Migrated. Seems that “after_vm_destroy” is the last in order hook to be executed when VM is migrated, and I wanted to verify that. How come that there is no hook which enables VM start or continue on a destination hypervisor, after VM is migrated? Or am I missing something? Sent from my iPhone > On 26 Aug 2019, at 17:30, Milan Zamazal wrote: > > "Vrgotic, Marko" writes: > >> Would you be so kind to help me/tell me or point me how to find which >> Hooks, and in which order, are triggered when VM is being migrated? > > See "VDSM and Hooks" appendix of oVirt Admin Guide: > > https://ovirt.org/documentation/admin-guide/appe-VDSM_and_Hooks.html > > Regards, > Milan ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/LMJ6QOFUNABXGZZS5SU5KTYFC6QNRF5I/
[ovirt-users] Re: VDSM Hooks during migration
"Vrgotic, Marko" writes: > Would you be so kind to help me/tell me or point me how to find which > Hooks, and in which order, are triggered when VM is being migrated? See "VDSM and Hooks" appendix of oVirt Admin Guide: https://ovirt.org/documentation/admin-guide/appe-VDSM_and_Hooks.html Regards, Milan ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/SNUMEJZ5AFBFCRK5DA5GZ4CU4XMQECVG/
