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ah i see, i cannot think of any way around this but i don't know much about fuse, Perhaps it's because of the ownership root vs backup. Hopefully someone else might know.

well, pbs does not need to see it as a disk, any mounted fs could probably be used as a datastore. If your curlftpfs is mounted, create a directory there and use that dir as the backing path in creating a datastore on pbs.

just a short question to narrow down the issue, did you use dhcp client or static ipv4 when it breaks?

Thank you for the feedback, yes the backup is verified, I also created a new datastore on another disk, do the backup and verify, restore the vm and it won't boot so yes, it's very much reproducible. However, you actually solved it by your feedback. I suspected the boot partition got corrupted...

I have a small router vm, some kind of linux based. If i backup with old vzdump and restore to another VMid, it boots okay. If i backup to pbs and restore to another VMid it won't boot. i can't come up with any good troubleshooting, if anybody have an idea or advice i would be happy to hear it...

yes, just backup using the pve backup in gui with backup server as storage

Hi John, just run the proxmox-backup-client on the PVE host where you have the path you need to backup reachable/mounted. example: proxmox-backup-client backup mynewbackup.pxar:/mnt/pve/mydirtobackup --repository backupuser@pbs@10.10.10.10:backupserver This will create the archive...

And it's a VM not a CT right? And you could ssh to it before installing pbs? to root? No other changes except vanilla debian 10? I have installed one working pbs on debian 10 on VM. I right now installed one on CT using the provided debian 10 template, using static ipv4 ip no dhcp, assigning the...

thanks. A netstat output could help, like netstat -tunlp also how the /etc/network/interfaces looks like. If you don't have netstat can be installed with apt install net-tools

It would help to know how you installed pbs, apt-get install proxmox-backup-server or apt-get install proxmox-backup?

Sorry Luca but i don't understand what you are asking. Did you install PBS in a VM running debian? And after that you cannot start the VM? .. do you have many threads about this??? https://forum.proxmox.com/threads/proxmox-backup-server-doesnt-accept-connection-after-install-reboot.79441/

yes

I only know one thing that can cause the dirty bitmap to be invalid and that happens if i backup to another PBS/Datastore. Do you do any backups inbetween? What happens if you run one directly after the one with invalid bitmap?

or zfs vdev mirrors, my fav

Our special device vdev is using 3,3GB for 1TB backup data. Mirrored vdevs, have been running daily backups for a month.

nonononoooo both host-VM backup and guest backup is thru pbs. The VM is done as usual with PVE using pbs, the guest backup is to the same pbs datastore but using pbs backup client installed in the guest linux. For the pbs separate vs virtual, i do both. I have one hw PBS server that also has...

i found it very useful if having linux guests to run backup server client backups along with PVE VM/CT backups, when not full restore needed gives me quick access to files. I don't use CTs so i cannot tell if this helps. Also I don't remember if there is a windows backup client but i don't think...

well, we can agree to disagree then. I still think there are no disadvantages, and our DC runs on wind energy so no co2 thoughts there, and for the cost, well, better run no backups then ;) a quick test with zstd compressed copy with or without compression shows really tiny cpu usage compared...

with proxmox-backup-client you can name them using option --backup-id https://forum.proxmox.com/threads/naming-backups-from-proxmox-backup-client.76471/