On Tue, 14 Jul 2020 at 11:27, Nir Soffer <nsof...@redhat.com> wrote: > On Tue, Jul 14, 2020 at 9:33 AM Łukasz Kołaciński < > l.kolacin...@storware.eu> wrote: > >> Hello, >> > > Hi Lukaz, > > Lets move the discussion to devel@ovirt.org, I think it will be more > productive. > > Also, always CC me and Eyal on incremental backup questions for a quicker > response. > > >> I am trying to do full backup on ovirt 4.4 using sdk. >> > > Which version of oVirt? libvirt? > > >> I used steps from this youtube video: >> https://www.youtube.com/watch?v=E2VWUVcycj4 and I got error after >> running backup_vm.py. I see that sdk has imported disks and created backup >> entity and then I got sdk.NotFoundError exception. >> > > This means that starting backup failed. Unfortunately the API does not > have a good way to get > the error that caused the backup to fai. > > You should be able to see the error in the event log in the UI, and in > engine log. > > >> I also tried to do full backup with API and after finalizing backup >> disappeared (I think) >> > > So backup from the API was successful? > > Backups are expected to disappear, they are temporary objects used to > manage the backup > process. Once the backup process was finished you can do nothing with the > backup object, > and you cannot fetch the same backup data again. > > >> and I couldn't try incremental. >> > > The fact that the backup disappeared should not prevent the next backup. > > After you create a backup, you need to poll backup status until the backup > is ready. > > while backup.phase != BackupPhase.READY: > time.sleep(1) > backup = backup_service.get()# to_checkpoint_id will be used as > > If the backup does not end in ready state, it failed, and you cannot do > anything with > this backup. > > When the backup is ready, you can fetch the to_checkpoint_id created for > this backup. > > checkpoint_id = backup.to_checkpoint_id > > At this point you need to persist the checkpoint id. This will be used to > create the incremental > backup. > > > [ 0.0 ] Starting full backup for VM >> '51708c8e-6671-480b-b2d8-199a1af9cbdc' >> Password: >> [ 4.2 ] Waiting until backup 0458bf7f-868c-4859-9fa7-767b3ec62b52 is >> ready >> Traceback (most recent call last): >> File "./backup_vm.py", line 343, in start_backup >> backup = backup_service.get() >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/services.py", line >> 32333, in get >> return self._internal_get(headers, query, wait) >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 211, in _internal_get >> return future.wait() if wait else future >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 55, in wait >> return self._code(response) >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 208, in callback >> self._check_fault(response) >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 130, in _check_fault >> body = self._internal_read_body(response) >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 312, in _internal_read_body >> self._raise_error(response) >> File "/usr/lib64/python3.7/site-packages/ovirtsdk4/service.py", line >> 118, in _raise_error >> raise error >> ovirtsdk4.NotFoundError: HTTP response code is 404. >> >> During handling of the above exception, another exception occurred: >> >> Traceback (most recent call last): >> File "./backup_vm.py", line 476, in <module> >> main() >> File "./backup_vm.py", line 173, in main >> args.command(args) >> File "./backup_vm.py", line 230, in cmd_start >> backup = start_backup(connection, args) >> File "./backup_vm.py", line 345, in start_backup >> raise RuntimeError("Backup {} failed".format(backup.id)) >> RuntimeError: Backup 0458bf7f-868c-4859-9fa7-767b3ec62b52 failed >> > > This is correct, backup has failed. > > Please check the event log to understand the failure. > > Eyal, can you show how to get the error from the backup using the SDK, in > a way > that can be used by a program? > > e.g. a public error code that can be used to decide on the next step, and > an error > message that can be used for displaying error to users of the backup > application. > > This should be added to the backup_vm.py example. > > Nir > > I added an example of how to fetch the event from the engine using the SDK.
You can find here - https://gerrit.ovirt.org/#/c/110307/1/sdk/examples/backup_vm.py -- Regards, Eyal Shenitzky
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