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I don't know. Personally I would restart and do a full test.

Simple stupid and cheap solution : backup (within proxmox virtual environment) your VM on an other sever storage (NFS export for example). When you will need to restore the backup, it will be local and will take less time. Good solution : as @Johannes S said : reverse proxy (application level...

Hello Look at : https://docs.ansible.com/ansible/latest/collections/community/general/proxmox_module.html ==> You can specify storage.

You can try a low level disk test and a RAM test.

Check your gateway IP : .1 or .254 ? Is the interface in the bridge (conf applied ?) : brctl show

Hello. The problem can be anywhere on the chain : processor, RAM bus, RAM, PCI or SATA or whatever bus, RAM of the disk, disk chip or firmware, disk itself. We cannot tell. But it is often a disk or RAM problem (if the RAM is not ECC). Just to check, is your disk direct attached, it is not a...

Hello. It seems that your antivirus is scanning the whole backup files. Thus it takes long time. Thus the old backup file cannot be deleted by the backup rotation and the system. Thus your storage is full. And when you unmount or if you stop and start kesl, the space is cleared. Solution : use...

My advices for disk performance : - use local disk storage - read this if you want extra speed be be carefull with data loss with writeback : https://pve.proxmox.com/wiki/Performance_Tweaks

Maybe you can try the elevator and the IO scheduling ? https://pve.proxmox.com/wiki/IO_Scheduler + ionice 8 in /etc/vzdump.conf

Hello. From my experience, monitoring software database is the worst case scenario for IOs. Furthermore in your case : small writes (thus read, modify, write), with synchronous random writes, and with synchronous network replication on other nodes ! Maybe you are experiencing IOs starvation on...

Hmmm... And what activity makes those IOs ?

Indeed, nut-scanner does not need nut-snmp.

Hello. All the needed configuration is in /etc. Personally I backup /etc /root /opt to be sure to get any customization I would have made. You can use tar and scp to get the backup and automatize it with Ansible for example. You can use tools like rsnapshots to backup the configuration files...

Hello. I think the SNMP NUT driver is in this separated package and that it is needed. Personally, I let Proxmox host shutdown the CT/VMs in accordance with the priority I defined in Proxmox VM/CT settings. thus I configure NUT only on proxmox hosts, not in VM/CTs.

Nice to read this ️

Sorry, package name was not good (my mistake) : apt install nut-snmp man snmp-ups

Ohhh... Good to know fiona, thanks !

Thank you Fiona. I edited my post. Yest it is the first thing to try, I agree.

So Unspec, maybe you should try to change the scheduler algorithm to CFQ ? nano /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="... elevator=bfq" update-grub

Bandwith Bandwidth should apply but maybe IOs will still be high. Why do you think ionice 8 won't do anything ? From the documentation : https://pve.proxmox.com/pve-docs/vzdump.1.html : ionice: <integer> (0 - 8) (default = 7) Set IO priority when using the BFQ scheduler. For snapshot and...