backup

  1. B

    Backup Script für configs & rpool zfs snapshot

    Hallo, hier ein Python-Skript um die Konfigurationsdateien und optional auch einen ZFS-Snapshot des rpool separat zu sichern. Vielleicht ist es ja für den einen oder anderen hilfreich oder dient als Inspiration. Features : Pull-basierte Sicherung von Proxmox-VE-Konfigurationsdateien...
  2. A

    Einfachster Weg das root zfs zu übertragen?

    Hallo! Ich habe nun endlich etwas Zeit die INTEL SSDs einzusetzen. Die beiden sind jedoch kleiner als die drei Crucials, die aktuell in meinem System laufen. Wenn ich das jetzt nicht durcheinander bringe, dann laufen meine 3x 1TB Crucials als RAID-Z1 und ich möchte die beiden INTELs als RAID-Z0...
  3. W

    How to gracefully handle cert renewal?

    I use a Let' s Encrypt cert on both my PVE and PBS servers. This morning I woke up to a bunch of email alerts of failed backups and datastore connection failures. After some messing about I found that the cert on my PBS server had renewed so the fingerprints no longer matched. Was an easy fix...
  4. M

    Removable disks as backup target

    Hi there, I just started using Proxmox VE in a 2-node cluster (9.1.6) setup as a sandbox for educational purposes. Some VMs already running in the cluster, so far all works well. Looking at options to perform backups of VMs, I'd like to use USB disks as removable storage. On another (Ubuntu)...
  5. P

    How to limit concurrent backup jobs across multiple nodes to prevent PBS overload?

    Hello everyone, I'm running into a serious bottleneck with my backup strategy. I have a 10-node Proxmox cluster, and all VMs are backed up to a single Proxmox Backup Server. The issue is: I created a cluster-wide backup job selecting VMs by their IDs. When the schedule hits, all 10 nodes...
  6. F

    [SOLVED] Stop Mode Backup: "Dirty Shutdown" on Windows VMs with Database Services - Complete Timeout Chain Fix

    The Problem : Stop Mode backups on Windows VMs running databases (SQL Server, MongoDB, Elasticsearch, Redis, etc.) fail with: ERROR: VM quit/powerdown failed timeout waiting on systemd After backup, services won't start → Event Viewer shows "Service did not respond in a timely fashion" ---...
  7. C

    PBS backup to S3 error "Please reduce your request rate"

    Hello dear Proxmox-Community, We are using a Proxmox Backup Server to back up data to S3. However, we are encountering errors during various operations. In the logs, we found these multiple errors: 2026-02-08T22:42:27+01:00: <Error><Code>SlowDown</Code><Message>Please reduce your request...
  8. R

    [SOLVED] PBS in separatem Netz zu WEB-UI anbinden?

    Moin! Ich bin neu in der Proxmox-Welt und habe eine Frage bezüglich PBS. Ich setze momentan ein Cluster für unsere produktive Umgebung auf. (Wechsel von VMware). Wir haben bisher für unseren Backup-Traffic ein separates Netz genutzt. Dies möchte ich nun gerne fortführen. Dieses Netz liegt...
  9. D

    Nachträglich Backups verschlüsseln?

    Hi, Ich habe gerade festgestellt, dass ich leider alle meine Backups unverschlüsselt an einen S3 Hoster sende. Ich habe ein 3-Knoten Setup, was wäre hier der beste Weg um zukünftig alle Backups zu verschlüsseln und die unverschlüsselten Backups zu entfernen? Sollten alle drei Knoten den...
  10. A

    proxmox mail Problem

    Hallo, ich habe in Proxmox 9.1.5 mail konfiguriert mit erfolgreichen Tests und trotsdem bekomme ich immer wieder eine mail mit folgendem Inhalt Fehler bei der Nachrichtenzustellung an folgende Empfänger oder Gruppen: log@winkler-cottbus.de Kommunikationsfehler bei der Zustellung der...
  11. A

    Proxmox 9.1.5 weird backup problem leaving VM filesystem damaged

    setup: we have a proxmox ve with 1 vm (debian bookworm) on sunday we run a weekly backup (type stop) to a proxmox backup server we experience the following issue: - vm is shutdown - backup starts BUT vm is also powered on immediately again - vm seems to start fine but big parts of the device...
  12. L

    Include node name in backup files by default

    A little background first: I run Proxmox on just one single node/host with local onboard NVME storage, because that covers my current needs just fine, and I backup all important VM's to an SMB share on a NAS in a different location with gigabit connection. I also have a 2nd identical machine on...
  13. H

    [SOLVED] Problem mit Update PBS

    Hallo, ich habe aktuell das Problem, das der Kernel nicht aktualisiert wird, da angeblich auf der Festplatte kein Platz mehr ist, was komisch ist, da dies nicht stimmt. Das ist der Fehler: No /etc/kernel/cmdline found - falling back to /proc/cmdline Copying and configuring kernels on...
  14. P

    Swap usage while running backups

    I'm doing backups from fast (NVMe) drives to slow (ATA; 5400 RPM 130 MB/s write). Presumably, as a result of this, swap space fills up when I run backups, and it's mostly VM memory that gets swapped out. I have 8 GB of swap configured and it fills up completely. RAM usage of the server never...
  15. N

    Rebootable Backup

    Hello guys, I am wondering if there is a solution to make a rebootable backup of proxmox set up. The idea is having 2 disks - one disk with the proxmox set up, VMs and CTs. And the other disk to be a complete reboot backup. SO, if the first disk fails, the second disk can be used without...
  16. M

    Backup randomly fails on Synology NAS

    I have troubles backing up an LXC container on PROXMOX VE 9. I do it as a backup job that saves shapshot images on a NAS. Strange thing is that it happens sometimes, not always. Traced error is: 2026-01-10 01:05:02 INFO: zstd: error 70 : Write error : cannot write block : Bad address Backup...
  17. L

    [SOLVED] Extremely low speeds when backuping

    Hello everyone. Im writing this because I dont know what to do anymore. I installed PBS 2 weeks before and tried doing backup test today. Lets just say that 30 GB took 19 hours. My internet connection is not the problem. The PBS is located somewhere connected through Tailscale. It also has SSD...
  18. R

    Backup to NFS share spikes IO delay, locks up hypervisor.

    Hi all, I'm trying to wrap my head around an issue that I've been experiencing for a while now, some progress has been made by accident. My single-node Proxmox server hosts a TrueNAS Scale VM, which has a HBA passed through to it, with 5 disks attached. This hosts, among other things, an NFS...
  19. P

    Single backup at a time cron script

    This post was made in regards to bug report 3086: https://bugzilla.proxmox.com/show_bug.cgi?id=3086 Update: I've updated the code to include an email report to mirror the basics of what the backup job provides and verified that both the log and the email functions as expected. This should work...
  20. H

    [Backups] hang

    Hello, I have an issue that seems to have started after updating to PBS 4.1.0. Backups randomly fail with no apparent reason. PVE Backup logs: INFO: starting new backup job: vzdump --pool CICD --fleecing 0 --mode snapshot --storage PBE_Long_Term --mailnotification always --mailto <email>...