Il giorno mer 14 lug 2021 alle ore 08:53 Konstantin Shalygin <k0ste@k0ste.ru> ha scritto:

Hi Sandro,

- How this image is mounted on oVirt host?

They are mounted as block storage /rhev/ `-- data-center |-- b55ef7a8-da51-11eb-b619-5254001ce0e4 | |-- 1996dc3b-d33f-49cb-b32a-8f7b1d50af5e -> /rhev/data-center/mnt/blockSD/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e | `-- mastersd -> /rhev/data-center/mnt/blockSD/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e `-- mnt `-- blockSD `-- 1996dc3b-d33f-49cb-b32a-8f7b1d50af5e |-- dom_md | |-- ids -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/ids | |-- inbox -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/inbox | |-- leases -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/leases | |-- master -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/master | |-- metadata -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/metadata | |-- outbox -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/outbox | `-- xleases -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/xleases |-- ha_agent | |-- hosted-engine.lockspace -> /run/vdsm/storage/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/ac3a245f-e6fe-4159-b0ee-be08d4048bb7/8b4bddc1-1602-45d7-854c-eaeac9549617 | `-- hosted-engine.metadata -> /run/vdsm/storage/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/dc77bfc2-cecd-4ab5-81f7-e15b81e45994/1927372e-019b-448a-8645-697b8b8ed42a `-- images |-- 10af85ab-434d-4104-800d-099e05a3653e | `-- 08ad02fc-6bfc-40ab-9c3d-24e0f1ac6689 -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/08ad02fc-6bfc-40ab-9c3d-24e0f1ac6689 |-- ac3a245f-e6fe-4159-b0ee-be08d4048bb7 | `-- 8b4bddc1-1602-45d7-854c-eaeac9549617 -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/8b4bddc1-1602-45d7-854c-eaeac9549617 |-- bb667f95-bbb0-41a4-ad15-66f1b9bdda59 | `-- 5abcb5f0-2c28-41b4-bfcc-bd41ef730d35 -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/5abcb5f0-2c28-41b4-bfcc-bd41ef730d35 |-- cccd50f6-6e47-43ab-9075-1bbd31d5e3b7 | `-- 169eacc2-584c-47ee-a295-ad3aa9c811c5 -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/169eacc2-584c-47ee-a295-ad3aa9c811c5 |-- dc77bfc2-cecd-4ab5-81f7-e15b81e45994 | `-- 1927372e-019b-448a-8645-697b8b8ed42a -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/1927372e-019b-448a-8645-697b8b8ed42a `-- fc6b0b84-17fa-42e9-80ae-97cf50e8b74d `-- 3eaeb1ba-2b36-4c29-b721-da19d3e5784e -> /dev/1996dc3b-d33f-49cb-b32a-8f7b1d50af5e/3eaeb1ba-2b36-4c29-b721-da19d3e5784e

- How to change image features? - How to add upmap option to libvirt domain? - How libvirt domain looks like? - How snapshots works?

Snapshot works fine, going to VM tab and creating snapshot as usual.

- How clones works?

Disk copy can be done from the engine storage -> disk tab. VM cloning failed for me, opened *Bug 1982083* <https://bugzilla.redhat.com/show_bug.cgi?id=1982083> - Cloning VM with managed block storage raise a NPE

- How to migrate images from one domain to another?

I would let the storage team answer these questions in detail, +Benny Zlotnik <bzlotnik@redhat.com> ? -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo@redhat.com <https://www.redhat.com/> *Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours.*

Not currently, we do want to support this using rbd-nbd On Wed, Jul 14, 2021 at 11:26 AM Konstantin Shalygin <k0ste@k0ste.ru> wrote:

It's possible to use librbd instead kernel mount like in OpenStack?

Sent from my iPhone

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On 14 Jul 2021, at 10:41, Sandro Bonazzola <sbonazzo@redhat.com> wrote:

They are mounted as block storage

Hi all, does it mean that it will be possible to use the drbd storage in the ovirt environment? Thanks Il giorno mer 14 lug 2021 alle ore 12:39 Konstantin Shalygin <k0ste@k0ste.ru> ha scritto:

I'm mean not this. BLL.Storage currently remove 'standard' Ceph integration for libvirt and use kernel mounts instead this. Again: removed, because in legacy cinder integration works in qemu process without any mounts. Any plans to add libvirt librbd variant to oVirt back?

Thanks, k

Sent from my iPhone

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On 14 Jul 2021, at 11:40, Benny Zlotnik <bzlotnik@redhat.com> wrote:

Not currently, we do want to support this using rbd-nbd

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