1. H

    configure I/O scheduler for physical device pass-through

    as title, I need to tune the i/o scheduler for 4 mechanical disk that are passed through to a vm. On proxmox host the scheduler for all disk is none [mq-deadline] On vm guest the scheduler for all those disk is [none] mq-deadline kyber bfq those disks are in a btrfs raid10 setup. what setup...
  2. L

    Built-in Backup Regressions I've Noticed Since The Release of PBS

    I've been holding back a long time, but I've decided to go ahead and say what's on my mind. This is the most overloaded drop-down-menu I've ever seen and it needs to be changed back to how it was before! : Instead of trying to use one drop-down to set "day of week" and "Start Time" (at the...
  3. Y

    PBS Hourly backup

    Hello, I have configured PBS as per attachment, I would like to have backups every two hours and keep the last 12 in order to have a backup every two hours of a whole day. Also you want to keep the last 7 days, 4 weeks and last 6 months. Now, the backup task starts only once a day at the...
  4. V

    Best IO Scheduler for local zfs storage

    Dear all. I have zpool/zvol - as a local storage (with l2arc+cache). Which best IO Scheduler in a common case? Is the CFQ best or not in this situation?
  5. I

    Scheduled backups

    Currently I have Proxmox 4.4 with 3x 1TB hard drives installed - 1 for proxmox and the other two are used as LVM and each have one ~120GB VM on them. I want to make a scheduled backup of these two VM's which will execute once a week and I'm looking for some information. I've created a Backup...
  6. G

    Frequent CPU stalls in KVM guests during high IO on host

    Since we upgraded our cluster to PVE 4.3 from 3.4, all our OpenVZ containers have been converted to KVM virtual machines. In many of these guests we get frequent console alerts about CPU stalls, usually when the cluster node is under high IO load (for example when backing up or restoring VMs to...
  7. G

    Storage (san fibre channel) and load sharing

    Hi, does anybody have some experience using proxmox with san? I have a san storage, connected with fibre channel hba cards (dual, with multipath) to multiple pve servers sharing the same storage group / pvs for lvm storage. What bothers me is that one virtual machine or pve host can saturate...


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!