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  1. M

    How to import Google Cloud VM into Proxmox

    For anyone having the same issue. I managed to import the VM from GCP like this: - Export it from GCP as qcow2 file. (Create an Image then export this to a bucket then download the file from the bucket) - Create a Linux VM in Proxmox and assign it a (small) HDD in qcow2 format. - go to VM...
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    Container migration does not use (zfs) compression

    Obviously all the data needs to be transferred. But zfs uses block-based compression and achieves such a high compression rate. I would expect the migration to also use compression and achieve a similar, if not bigger, compression rate. Obviously no compression is applied. Viewing a Proxmox...
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    Container migration does not use (zfs) compression

    I think I stumbled uppon a bug related to container migrations. I have a container running on zfs storage with compression enabled. It's a test server which produces huge amounts of logfiles, which are highly compressible. The disk usage is 250 GB but the referenced size is around 3.000 GB. A...
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    [SOLVED] how to troubleshoot dropped packets

    I am having the same or a related problem, but my dmesg is empty, no errors about hangs or anything else. I narrowed it down to the following. Each PVE Node has a dedicated network card which is used only for Link 0 in the cluster. They are connected to a simple gigabit switch which only...
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    [SOLVED] dirty-bitmap status: created new

    I am having the same issues with PBS and do not yet understand the dirty-bitmap topic. Let me ask a more specific question: How should I do the backups in order to have (a) consistend backups and (b) make use of the dirty-bitmap feature. If I configure the backup mode to be "Stop", will this...
  6. M

    PVE at different locations - how?

    Thx for the answers. PBS and `qm remote-migrate` seem to be very reasoanable options.
  7. M

    PVE at different locations - how?

    I don't know how this tool would help me. How does it connect different clusters to each other?
  8. M

    PVE at different locations - how?

    I want to use Proxmox at two different locations. My question is how can I connect them to each other? We already have small PVE cluster at our office. This is ideal for development and testing but not suited to serve the public (internet connection to slow, not enough IPs, etc.). The plan is...
  9. M

    How to get the exactly backup size in proxmox backup

    @krikey thx for your work. I tried your code and it works nice for smaller CT/VMs. But for lager VMs its waaay to slow (on my machine). I came up with a different approach for VMs. a) VMs are backed up in fixed-sized chunks of 4 MiB. (According to...
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    Balooning problem - "Out of puff!" but host has plenty of free memory

    I am having some problems with one of my VMs. The dmesg is full of "Out of puff!" errors while the host never got close to running out of memory. Any idea why this happens? [Mi Mär 15 01:10:59 2023] kworker/2:0: page allocation failure: order:0...
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    Newbie questions: retention, datastore,

    I have been using PVE for some years and I want to also use PBS now. It seems like I don't quite get some of the concepts. My setup is: one PVE cluster and one PBS on a separate physical machine. The PBS has 1 SSD as boot drive (with zfs) and a raid-z2 array of 6 HDDs for storage (called...
  12. M

    2% dropped packages - inbound_packets_dropped_ratio

    I am using netdata to monitor my PVE hosts. On some of them I am getting inbound_packets_dropped_ratio warnings because 2 % of packets are dropped. Any idea why? Here is my setup: Each host has 2 NICs, first is mapped to vmbr0, second to vmbr1. vmbr1 is only used for PVE traffic. It is...
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    [TUTORIAL] Fix always high CPU frequency in proxmox host.

    My understanding of the pstate driver is that the frequency scaling is no longer done by an algorithm within the kernel but that the cpu determines how fast it should go. (but I might be wrong). Therefore you should only be able to force the driver if the cpu supports it. If it does, I would...
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    Memory missing from VM

    Oh, I did not know about that 80% limit, there is also no hint in the documentation. But it all makes sense now. After rebooting the full 32 GB are available and it gets shrunken down to about 14 GB. At that point the host has exactly 80 % RAM free. How can I influence this? The server has...
  15. M

    Memory missing from VM

    agent: 1 balloon: 1024 boot: cdn bootdisk: scsi1 cores: 2 cpu: host ide2: none,media=cdrom memory: 32768 name: testvm net0: virtio=52:54:00:19:f0:94,bridge=vmbr0,firewall=1,tag=19 numa: 1 onboot: 1 ostype: l26 protection: 1 scsi1: local-zfs:vm-403-disk-0,discard=on,size=18G scsihw...
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    e1000 driver hang

    It seems to me that the problem is VLAN related. I used the same NIC for quite some time without problems. The problems started then I added VLANs to my setup. But this might be a coincidence, since I also did a PVE update at the same time. Anyways, thanks for your help. Since a used server...
  17. M

    e1000 driver hang

    I tried this, and any other suggestion I could find, but the problems remained. They were less frequent with the tso gso workaround, but they still happened. Last week I gave up and switched it for a different NIC (Intel E43709-004 - Based on the Intel 82576 Chipset) the problems are gone.
  18. M

    [TUTORIAL] Fix always high CPU frequency in proxmox host.

    This is probably not the cause for the driver selection. I have an Intel(R) Core(TM) i5-8400 CPU with Proxmox 7 and it also shows unknown in uname but uses pstate # uname -srvmpi Linux 5.13.19-4-pve #1 SMP PVE 5.13.19-9 (Mon, 07 Feb 2022 11:01:14 +0100) x86_64 unknown unknown # cpufreq-info...
  19. M

    [TUTORIAL] Fix always high CPU frequency in proxmox host.

    I could not find a reason why it would not use p-state. It might somehow detect the cpu as incompatible, but it should be compatible. You could try to use grub-flags to enable it manually. For testing purposes you can change the flags at boot time from within the grub menu. They are gone after...
  20. M

    [TUTORIAL] Fix always high CPU frequency in proxmox host.

    Sorry, I misunderstood your question. I guess the default depends on the kernel config used to build the kernel. One could override this default with boot flags in grub, but as far as I can see, PVE does not do this. The PVE kernel is maintained here: https://github.com/proxmox/pve-kernel...