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...manage locks manually or via Ansible. To make hook manage locks, I still need to find out a secure way to run LVM commands from a non-root account, but this is another problem. Le 22 janvier 2020 10:24:53 GMT+01:00, Michal Privoznik <mprivozn@redhat.com> a écrit : >On 1/22/20 9:23 AM, Guy Godfroy wrote: >> I could launch `lvchange -asy` on the source host manually, but the >aim >> of hooks is to automatically execute such commands and avoid human >errors. > >Agreed. However, you would need two hooks actually. One that is called >on the source when the migration...

On 1/24/20 4:34 PM, Guy Godfroy wrote: > I don't really understand what new hook this would be. Libvirt's migration happens in phases [1]. The last one is 'Confirm' where either the domain is either killed (because it's running on the destination successfully), or resumed (because there was an error). I...

On 1/23/20 1:43 PM, Guy Godfroy wrote: > So, how likely is it possible to get this feature (two new events for > the qemu hook)? I've started writing it, but then I realized we might need third hook - in confirm phase - which would be run on the source when quemu switches control over to the destination, or when mig...

I could launch `lvchange -asy` on the source host manually, but the aim of hooks is to automatically execute such commands and avoid human errors. Le 22 janvier 2020 09:18:54 GMT+01:00, Michal Privoznik <mprivozn@redhat.com> a écrit : >On 1/21/20 9:10 AM, Guy Godfroy wrote: >> Hello, this is my first time posting on this mailing list. >> >> I wanted to suggest a addition to the qemu hook. I will explain it >> through my own use case. >> >> I use a shared LVM storage as a volume pool between my nodes. I use >> lvmloc...

...both source and target nodes, so I have to use a shared lock (lvchange -asy). That's why I need a hook event on the source host too (as far as I know after my tests, the migration event is only triggered on the target host). Is such a feature a possibility? Thanks for your attention. Guy Godfroy

So, how likely is it possible to get this feature (two new events for the qemu hook)? Le 22/01/2020 à 10:56, Guy Godfroy a écrit : > That's right, I need also that second hook event. > > For your information, for now I manage locks manually or via Ansible. > To make hook manage locks, I still need to find out a secure way to > run LVM commands from a non-root account, but this is another problem....

On 1/21/20 9:10 AM, Guy Godfroy wrote: > Hello, this is my first time posting on this mailing list. > > I wanted to suggest a addition to the qemu hook. I will explain it > through my own use case. > > I use a shared LVM storage as a volume pool between my nodes. I use > lvmlockd in sanlock mode to protec...

On 1/22/20 9:23 AM, Guy Godfroy wrote: > I could launch `lvchange -asy` on the source host manually, but the aim > of hooks is to automatically execute such commands and avoid human errors. Agreed. However, you would need two hooks actually. One that is called on the source when the migration is started, and the other th...

I don't really understand what new hook this would be. Le 24/01/2020 à 14:05, Michal Privoznik a écrit : > On 1/23/20 1:43 PM, Guy Godfroy wrote: >> So, how likely is it possible to get this feature (two new events for >> the qemu hook)? > > I've started writing it, but then I realized we might need third hook > - in confirm phase - which would be run on the source when quemu > switches control over to t...

Cool :) Don't worry I'm not on a rush: I guess the feature will not be part of Debian before next major release anyway. Le ven., janv. 24, 2020 at 17:24, Michal Privoznik <mprivozn@redhat.com> a écrit : > On 1/24/20 4:34 PM, Guy Godfroy wrote: >> I don't really understand what new hook this would be. > > Libvirt's migration happens in phases [1]. The last one is 'Confirm' > where either the domain is either killed (because it's running on the > destination successfully), or resumed (because...

...libvirt cluster is using a RBD volume pool. I wish that I could configure libvirt lock manager to use RBD locks. Is that possible? I read here https://libvirt.org/kbase/locking.html that libvirt lock manager is shipped with 2 active plugins. Is there any other plugins that exist? Thanks. Guy Godfroy

Hello Timm, I had exactly the same problem a few weeks ago. It pissed me off quite a bit, but I made myself a reason. My workaround is not to define the volume pool anymore. The domains are able to use any volume anyway, even when not part of any pool. I use custom hooks to activate and deactivate LVs. Hope that helps, Guy Le 14/02/2020 à 11:28, Timm Wunderlich a écrit : > dear all,