We could fix the problem. We had a full log partition on our xen host. This coused the problems with the backups. I hope this information helps you.
Posts made by Sunilplayer
Problem with BackupNG (internal error)
I tried to Backup a VM with BackupNG. Sometimes it worked successfully to backup the VMs with the Deltabackup. But most times the backups failed. So I downlaoded the Log file and there I found an URL to that showed me this Error. I found something in the Internet, that says it is an Database error from Xenserver. But I don't know how to fix it.
Hopefully someone coud help me.
Thanks for your respons
HTTP 500 internal server error
An unexpected error occurred; please wait a while and try again. If the problem persists, please contact your support representative.
Db_exn.DBCache_NotFound("missing row", "task", "OpaqueRef:2edce6db-4bd7-4930-9cbb-1b958b89f97e")