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  1. KVM console black until I switch to ttyXY with ctrl+alt+fXY

    Hi, after conversion of LXC to KVM which works, i have black screen / VNC console until I switch to tty1 with ctrl+alt+f1. Any ideas how to fix this, so that KVM 16.04 ubuntu based will start at tty1? I also just noticed, that when I use console for text input, it does not work. Picture shows...
  2. Create a cluster on a node which has VMs

    Hi guys, I understand and always join an empty node to the cluster. But now I want to create cluster from one server which already contains VMs and is in production. Can the first node, the one you create cluster on, also contain VMs? If not, then I have to install new node, create a cluster...
  3. PBS 2 on PM 6

    Hi guys, does PM 6 work with PBS 2? I wonder if I should upgrade PBS from 1.1 to 2.*. It is used bt PM 6 cluster, fully updated. Have no plans for upgrade PM 6 to 7 a.t.m.
  4. PM upgrade from 6 to 7 chrony or systemd-timesyncd

    I monitor all services listed in PVE HTTP GUI under System: After upgrade from 6 to 7 i got notifications about chrony not running. I installed chrony (replaced systemd-timesyncd) but now systemd-timesyncd failure is triggering monitoring system. As both can not run at the same time, I wonder...
  5. [SOLVED] What exactly does "apply network configuration"?

    Hi, since we have installed ifupdown2 we can apply network configuration without restarting the host. What would the manual equivalent of this apply button be in shell? I tried ifdown vmbr0 && ifup vmbr0 and all VMs instances network cards were removed from the bridge and lost connectivity.
  6. options zfs zfs_arc_max still needed for stability now-a-days?

    Hi guys, ever since I have encountered a crash, because ZFS did not release ARC memory fast enough, I limit it's use to a number I know will always be available and will not be requested by other processes. I am wondering, is it safe now-a-days not to define maximum ARC size and ARC will...
  7. Any donwnsides to not using vlan aware bridges with vlans?

    Hi, on some network cards, vlans do _not_ work, unless I disable vlan aware bridge option. Because it always works, if I disable it, and I'm tired of testing this over and over, I wonder are there any downsides to not making bridge vlan aware and let PM create new bridge for every vlan. Do you...
  8. Skip backing up if VM is shut down - feature request / bug?

    Hi, when using PBS I noticed, that because of no dirty map for shut down VMs, PBS or PM vzdump does read whole VM to notice, that there are no changes. For shut down VMs with big disks, this means whole lot of disk reading for nothing. I would suggest, that a feature be implemented, that would...
  9. ERROR: Backup of VM XY failed - MAX XY vcpus allowed per VM on this node

    If I want to backup a template from the template server to PBS, the backup fails, because the template has too many cpus defined. This makes sense only if you want to run the VM, not if you want to backup it. My template node obviously has less CPUs than compute nodes, but my templates are used...
  10. [SOLVED] Can a netwok loop reboot all cluster nodes?

    Hi, a coworker made a network loop for 60 seconds and it turned out that some PM cluster which uses WAN side for clustering rebooted itself - all nodes. It made me wonder, can network loop cause PM to reboot itself? Will it reboot, even if no HA resources are defined on cluster? Under what...
  11. PM 6 multicast related bugs

    HI, it took me some time, but I finally understood that is going on. Before I open bugs on bugzilla, I want to make sure I get things right. 1. BUG: Proxmox docs state, that PM 6 cluster does not require multicast. "Note: Proxmox VE 6.0 uses corosync 3 which switched out the underlying...
  12. [BUG] PM 6 adding new node, all other PVE stopped working && GUI shows no cluster, while listing cluste nodes!

    Hi, i did what I did many times before. Added a node to existing cluster. After adding it, whole cluster went down (VMs were running but PVE stopped). Here is how it looked on one node: [Fri Jan 29 14:46:36 2021] INFO: task pvesr:42198 blocked for more than 120 seconds. [Fri Jan 29 14:46:36...
  13. Using HDD pool slows down SSD pool on the same server

    Hi guys, a few days ago, I did backup import onto HDD pool on the same server that also has SSD pool. After a few minutes all guest VMs (they run only on SSD pool) started reporting problems with hung tasks, etc and services on them stopped working. Host has had high IOWait and low CPU usage...
  14. ZFS USED twice as LUSED

    Hi, i noticed that my two of my backup VMs use internally less space than is seen on hipervizor. Here is an example. Inside VM: /dev/sdb 4.0T 1.8T 2.2T 44% /backup Outside VM: rpool/data/vm-140-disk-1 2.70T 1.58T 2.70T - VOLSIZE LUSED USED...
  15. Delete multiple backups at once.

    I have many backups for many VMs usig PBS. Now I want to remove most for just one VM and one of it's disks. I could click and delete one by one in PM or PBS GUI, however I would like to select multiple not to click thousands of times. Any suggestions?
  16. KVM change hardware without reboot

    Is there a way to change CPU or RAM settings with KVM instance without rebooting it?
  17. [SOLVE] How to stop the "nonexisting" replication job?

    Hi, i have replication set to every minute. This VM has Qemu agent, but is currently not working. When backup started, and replication as well, replication never actually started in is in syncing state: 162-0 Yes local/p35 2020-12-15_21:19:51 pending...
  18. PM 6.2 KVM Live migration failed (bug or ?)

    A VM with two disks live migration failed. It also died on source side. Offline (as it was dead anyway) migration worked and VM recovered after. I'm attaching the live migration log. Should I report a bug or..? Proxmox Virtual Environment 6.2-12 Virtual Machine 142 (XYZ) on node 'p37' Logs ()...
  19. [SOLVED] Upgrade from 6.0 to 6.3 CPU usage increase by 100% :-)

    Hi guys, recently I upgraded two node cluster to four nodes from 6.0 to 6.3. I migrated VMs (some online, som offline) to the new nodes. On the new nodes we have the same series (E5 v2) CPUs, just around 1/5 faster per core and more cores. The thing I notice is, that CPU usage (with the same...
  20. KVE live migration on VM with lots of diry RAM pages (takes forever)

    Hi guys, i have a situation where migration link is slower than VMs RAM, which is constantly being changed. So when doing an online migration from 6.0 to 6.2, it never completes, just synces RAM forever and ever. Does anyone have any ideas for online migration in this case? VM disk in on a ZVOL.

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