Hello Harikrishna,

Thank you for your feedback.  We have implemented the communication and
works great.
We are at the restore part now  and it seems that there is no
implementation for the B&R Framework for KVM.
The restoreBackupVolumeAndAttachToVM() and restoreBackup() looks like they
are Hypervisor specific.

For other hypervisors it looks like this is implemented in
HypervisorGuruBase.

Does this have to be implemented for KVM too ?


On Tue, Jul 5, 2022 at 7:27 AM Harikrishna Patnala <
harikrishna.patn...@shapeblue.com> wrote:

> Hello Curious,
>
> This is interesting and as far as I understand you can go with that
> approach of SSH into the host and run the scripts that are required.
>
> For better control from the CloudStack management server, you can also try
> Command-Answer model to send a command to CloudStack agent in KVM host and
> get the required job done on the host.
>
> For example, you may refer to the implementation of
> "UpdateHostPasswordCommand<
> https://github.com/shapeblue/cloudstack/blob/523805c8bc63e5d5f2b8634e46db9bb9ec6214ad/server/src/main/java/com/cloud/resource/ResourceManagerImpl.java#L2878>"
> class which updates the host password using a script. Following are the
> abstract steps that are done during the process.
>
>   1.  API implementation "updateHostPassword<
> https://github.com/shapeblue/cloudstack/blob/893a88d225276e45f12f9490e6af2c94a81c2965/api/src/main/java/org/apache/cloudstack/api/command/admin/host/UpdateHostPasswordCmd.java#L30
> >"
>   2.  Prepare "UpdateHostPasswordCommand<
> https://github.com/shapeblue/cloudstack/blob/523805c8bc63e5d5f2b8634e46db9bb9ec6214ad/server/src/main/java/com/cloud/resource/ResourceManagerImpl.java#L2878>"
> and send it to corresponding host
>   3.  Implement a resource wrapper
> "LibvirtUpdateHostPasswordCommandWrapper<
> https://github.com/shapeblue/cloudstack/blob/893a88d225276e45f12f9490e6af2c94a81c2965/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtUpdateHostPasswordCommandWrapper.java#L29>"
> and run the specific script here.
>
> You may follow a similar procedure like above or you can directly use the
> SSH model as you mentioned.
>
> Hope this helps, let us know if you need something else.
>
> Regards,
> Harikrishna
> ________________________________
> From: Curious Pandora <p4nd...@gmail.com>
> Sent: Monday, July 4, 2022 6:17 PM
> To: dev@cloudstack.apache.org <dev@cloudstack.apache.org>
> Subject: Re: New B&R plugin for EMC Networker
>
> We are a cloud provider using cloudstack for our IaaS services.
>
>
>
>
> On Mon, Jul 4, 2022 at 3:21 PM Sven Vogel <s.vo...@ewerk.com> wrote:
>
> > Hi p4nd0ra - the curious,
> >
> > who is deleloping the plugin?
> >
> > Cheers
> >
> > Sven
> >
> >
> >
> > __
> >
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> > Von: Curious Pandora <p4nd...@gmail.com>
> > Datum: Montag, 4. Juli 2022 um 14:11
> > An: dev@cloudstack.apache.org <dev@cloudstack.apache.org>
> > Betreff: New B&R plugin for EMC Networker
> > Hello all,
> >
> > We are developing a new plugin for supporting KVM backups for DELL/EMC
> > Networker.
> >
> > Unfortunately there is no straight way to do it (it's the same for almost
> > all backup softwares out there) and we will need to access the hypervisor
> > hosts directly and execute some custom scripts.
> >
> > As you understand this raises a series of design, implementation and
> > operation decisions and issues and we think it's better if we ask for the
> > advise of the community.
> >
> > For starters, the implementation of SLA based backups is not feasible due
> > to Networker design and concepts.
> >
> > It is most likely feasible to utilize ad-hoc and scheduled backups
> > (provided that are initiated by cloudstack).
> >
> > We wonder if we can utilize the ssh functionality from the management
> host
> > to the hypervisors (that is used for example to restart ssh-agent if
> > kvm.ssh.to.agent is enabled to execute a centralized script in bash that
> > will be included in the cloudstack-agent.
> >
> > Is this approach acceptable ?
> >
> > Kind regards,
> >
> >
> >
> > --
> > p4nd0ra - the curious
> >
>
>
> --
> p4nd0ra - the curious
>


-- 
p4nd0ra - the curious

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