I have tried the to seed the files like described in your link with a small vm. This worked, also with two remote targets with the same files. I will try it now with the big vm. I'll inform you If this is working.

Thank you for your advice!
dmartini1337

I have tried the to seed the files like described in your link with a small vm. This worked, also with two remote targets with the same files. I will try it now with the big vm. I'll inform you If this is working.

Thank you for your advice!
dmartini1337

Thank you @Danp this is something that I could try.

But I see there one issue... I want to use two remotes (one local NAS and one in the Cloud over a vpn connection). I'll try to continue with the same files on both remotes, hopefully this will work. I'll start a new delta chain now to local NAS.

Edit:
I also make a copy of the metafiles to see what is changed by editing the backupjob, maybe I will get something working for two remotes...

Hello @olivierlambert,

in this Post (from citrix) is a 24 hours export time limit mentioned. Is this limit also part of xcp-ng? Could this time limit be increased to some higher values in any config file? I think this limitation is the problem with my delta backup.

Edit:
Same here (from xen-orchestra.com)

Edit:
It also has found a way to xcp-ng's github

If the time limit couldn't be increased is there any other way to get the initial full backup up in the cloud. Like uploading from the local NAS via rsync and then afterwards add the remote cloudbackup to the backup job, don't causing a new full backup due to the change of the backup job?

Or changing the systemtime to expand the 24 hours limit by turning back the clock, or a manipulated "slower" ntp server or something like that...

To make smaller vhds which aren't uploaded simultaneously would also do the trick, but this was already asked in the github post. Is something from the asked already implemented?

Thank you for your response,
dmartini1337

Hello xoa-ng community,

I have the problem that I want to backup a 1.5 TB vhd over a vpn connection to a cloud server(delta backup). This takes only about 36 hours due to a very good Internet connection. But if the job last longer than 24 hours the task in xen orchestra disappears, but the upload is still working (networktraffic indicates it is still running, the filesize also rises to 1.5 TB).

But after finnishing the backup job says failled and at the next sceduled job it starts a completly new fullbackup.

I have updatetd xen orchestra (from source) to newest version.

Is there any restriction, like a max time for a backup which i can increase?
Does somebody has the same problem?

Thank you for yor advice.

dmartini1337

Edit: The files are deleted after the failure message from xen orchestra.

Edit: Backup Log

@olivierlambert
One question to the additional added resource. I have added my cloudbackup server via VPN and NFS share to XOA. This works well, but I see that the local backup on the NAS is throttled down to the speed of the VPN upload tunneln. Is this behaviour correct?

You know from the other Post, that I have struggels with the "cloudbackup" server. So if the transfer to the VPN-NFS share is interrupted also the transfer to the local NAS fails.

Is it possible to add two daily (or every second day alternating) delta backup-jobs for a single vm? One saves the backup to local NAS and the other one to the vpn nfs share? Will the chains be consistent?

Thank you for your advice,
dmartini1337

Hello olivierlambert,

thank you for your response. This could also be an option, but I have to make sure that the upload is encrypted. Is there any way of an NFS encryption within XOA?

A VPN-Connection could be another alternative to encrypt the transfer but is there any possibility to do it with XOA? Since now I always encrypt with ssh an ssh-tunnels, is it also possible with nfs?

Thank you and have a nice day,
dmartini1337

*Edit: Do I have to make a whole new backup job, or can I add the additional remote to the existing job?

Hello XCP-ng community,

is there a way to change the naming of the created backupfiles of the delta backup?
I want to store a copy of the backupfiles on a cloud server for increased safety reasons.

The upload is done by rsync. Now I have the problem that the file with the fullbackup changes name every day. Rsync would upload the new fullbackup almost completely, but that is not necessary, because the fullback is already on the server (despited of the merged bytes).

So I have to manually (scripted) change the name of the backup on the cloudserver to fit the new name of the new fullbackp, so that rsync wont upload the new merged file completely new instead of an delta upload.

Is there any way to change the backupnames to static names? This would help to upload files with rsync. Or do you guys have other ideas of doing this.

Thank you, and have a nice day
dmartini1337