Il giorno lun 13 lug 2020 alle ore 17:06 Petr Kovar <pko...@redhat.com> ha scritto:
> On Mon, 13 Jul 2020 16:58:17 +0200 > Sandro Bonazzola <sbona...@redhat.com> wrote: > > > Il giorno mar 7 lug 2020 alle ore 18:07 Nir Soffer <nsof...@redhat.com> > ha > > scritto: > > > > > > > > > > > On Tue, Jul 7, 2020 at 5:05 PM Łukasz Kołaciński < > l.kolacin...@storware.eu> > > > wrote: > > > > > >> Dear ovirt community, > > >> > > > > > > Hi Łukasz, > > > > > > Adding de...@ovit.org since this topic is more appropriate for the > devel > > > list. > > > > > > > > >> I am trying to use ovirt imageio api to receive changed blocks (dirty > > >> bitmap) on ovirt 4.4. Could anyone tell me how to get them step by > step? On > > >> the documentation I saw endpoint "GET /images/ticket-uuid/map". I > don't > > >> know what ticket-uuid is and how to generate it. I also need to know > how to > > >> use this api because I can't reach it via /ovirt-engine/api/ > > >> > > >> I am asking about this endpoint: > > >> > > >> > https://www.ovirt.org/documentation/incremental-backup-guide/incremental-backup-guide.html#imageio-backup-api > > >> > > > > > > This guide is outdated and should not be used now. > > > > > > > Let's ensure the official documentation will be aligned ASAP to what has > > been released. > > +Petr Kovar <pko...@redhat.com> can you please handle this? > > > Is this about updating oVirt docs based on what we have > documented downstream? Downstream we had to target 4.4.2 with incremental > backup updates due to a large number of 4.4.1 priorities. > > yes > https://www.ovirt.org/documentation/incremental-backup-guide/ doesn't even > seem to be linked from https://www.ovirt.org/documentation -- maybe we > should just unpublish it? > If that's the case probably better to unpublish: no point in providing broken documentation. We can re-publish once we have the fixed one. > > Thanks, > pk > > > > > The most up to date information is here: > > > > > > > https://www.ovirt.org/develop/release-management/features/storage/incremental-backup.html > > > > > > However the extents API is also outdated in the feature page. We are > > > working on updating it. > > > > > > So here is example: > > > > > > First you must start backup with from_checkpoint_id argument: > > > > > > backup = backups_service.add( > > > types.Backup( > > > disks=disks, > > > from_checkpoint_id="checkpoint-id", > > > ) > > > ) > > > > > >> > > > "checkpoint-id" is the checkpoint created in the last backup. > > > > > > This starts a backup in in incremental mode. Dirty extents are > available > > > only > > > in this mode. > > > > > > Then you start a transfer for download, using the backup id: > > > > > > transfer = imagetransfer.create_transfer( > > > connection, > > > disk, > > > types.ImageTransferDirection.DOWNLOAD, > > > backup=types.Backup(id=backup_uuid)) > > > > > > The transfer.transfer_url is the URL to download from, for example: > > > > > > https://host:54322/images/53787351-3f72-44a1-8a26-1323524fac4a > > > > > > Connect to host:54322 and send this request: > > > > > > GET > /images/53787351-3f72-44a1-8a26-1323524fac4a/extents?context=dirty > > > > > > And parse the return json list, containing objects like: > > > > > > [ > > > {"start": 0, "length": 65536, "dirty": true}, > > > {"start": 65536, "length": 1048576, "dirty": false}, > > > ... > > > ] > > > > > > For example code of using the imageio API, see imageio http backend: > > > > > > > https://github.com/oVirt/ovirt-imageio/blob/d5aa0e1fe659f1bf1247516f83c71e072803fa05/daemon/ovirt_imageio/_internal/backends/http.py#L288 > > > > > > > https://github.com/oVirt/ovirt-imageio/blob/d5aa0e1fe659f1bf1247516f83c71e072803fa05/daemon/ovirt_imageio/_internal/backends/http.py#L498 > > > > > > We are adding a ImageioClient API that makes it easier to consume > without > > > writing any HTTP code: > > > https://gerrit.ovirt.org/c/110068 > > > > > > With this you can use: > > > > > > with ImageioClient(transfer.transfer_url, cafile=args.cafile) as > > > client: > > > for extent in client.extent("dirty"): > > > if extent.dirty: > > > print("##dirty start={} length={}".format(extent.start, > > > extent.length)) > > > client.write_to(sys.stdout.buffer, extent.start, > > > extent.length) > > > print() > > > > > > This will stream the dirty extents to stdout. Not very useful as is, > but > > > illustrates how > > > you can consume the data. > > > > > > Here is an example writing extents to a sparse stream format: > > > https://gerrit.ovirt.org/c/110069 > > > > > > For complete backup example code see: > > > > > > > https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/backup_vm.py > > > > > > Note the new imagetransfer helper module: > > > > > > > https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/helpers/imagetransfer.py > > > > > > Nir > > > > > > e-mail: l.kolacin...@storware.eu > > >> <m.helb...@storware.eu> > > >> > > >> > > >> > > >> > > >> *[image: STORWARE]* <http://www.storware.eu/> > > >> > > >> > > >> > > >> *ul. Leszno 8/44 01-192 Warszawa www.storware.eu > > >> <https://www.storware.eu/>* > > >> > > >> *[image: facebook]* <https://www.facebook.com/storware> > > >> > > >> *[image: twitter]* <https://twitter.com/storware> > > >> > > >> *[image: linkedin]* <https://www.linkedin.com/company/storware> > > >> > > >> *[image: Storware_Stopka_09]* > > >> <https://www.youtube.com/channel/UCKvLitYPyAplBctXibFWrkw> > > >> > > >> > > >> > > >> *Storware Spółka z o.o. nr wpisu do ewidencji KRS dla M.St. Warszawa > > >> 000510131* *, NIP 5213672602.** Wiadomość ta jest przeznaczona jedynie > > >> dla osoby lub podmiotu, który jest jej adresatem i może zawierać > poufne > > >> i/lub uprzywilejowane informacje. Zakazane jest jakiekolwiek > przeglądanie, > > >> przesyłanie, rozpowszechnianie lub inne wykorzystanie tych informacji > lub > > >> podjęcie jakichkolwiek działań odnośnie tych informacji przez osoby > lub > > >> podmioty inne niż zamierzony adresat. Jeżeli Państwo otrzymali przez > > >> pomyłkę tę informację prosimy o poinformowanie o tym nadawcy i > usunięcie > > >> tej wiadomości z wszelkich komputerów. **This message is intended only > > >> for the person or entity to which it is addressed and may contain > > >> confidential and/or privileged material. Any review, retransmission, > > >> dissemination or other use of, or taking of any action in reliance > upon, > > >> this information by persons or entities other than the intended > recipient > > >> is prohibited. If you have received this message in error, please > contact > > >> the sender and remove the material from all of your computer systems.* > > >> > > >> _______________________________________________ > > >> Users mailing list -- users@ovirt.org > > >> To unsubscribe send an email to users-le...@ovirt.org > > >> Privacy Statement: https://www.ovirt.org/privacy-policy.html > > >> oVirt Code of Conduct: > > >> https://www.ovirt.org/community/about/community-guidelines/ > > >> List Archives: > > >> > https://lists.ovirt.org/archives/list/users@ovirt.org/message/AIJMMJOR354VKVWWZZL74VKOEUEBO45Q/ > > >> > > > _______________________________________________ > > > Users mailing list -- users@ovirt.org > > > To unsubscribe send an email to users-le...@ovirt.org > > > Privacy Statement: https://www.ovirt.org/privacy-policy.html > > > oVirt Code of Conduct: > > > https://www.ovirt.org/community/about/community-guidelines/ > > > List Archives: > > > > https://lists.ovirt.org/archives/list/users@ovirt.org/message/S6OR7YRZCJMAWOHW62SJX3FUXJIZHQTG/ > > > > > > > > > -- > > > > Sandro Bonazzola > > > > MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV > > > > Red Hat EMEA <https://www.redhat.com/> > > > > sbona...@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. > > <https://mojo.redhat.com/docs/DOC-1199578>* > > > -- > Petr Kovar > Documentation Program Manager | Red Hat Virtualization & Developer Tools > Customer Content Services | Red Hat Czech s.r.o. > > -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbona...@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. <https://mojo.redhat.com/docs/DOC-1199578>*
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