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    ZFS slow writes on Samsung PM893

    Hello, I have a Dell R630 server (without HW storage controller) with 4x Samsung PM893 480GB, on which I run a ZFS. Unfortunately I have very poor write performance: fio --ioengine=libaio --filename=/ZFS-2TB_RAID0_SSD/fiofile --direct=1 --sync=1 --rw=write --bs=8K --numjobs=1 --iodepth=1...
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    [SOLVED] Various (interrelated?) LXC errors

    Hi, My setup has been running for almost a year without any problems, but all of a sudden lxc goes crazy. I know, I still use version 6, an upgrade is still pending. But in this state I would not like to upgrade it. How do these problems manifest themselves: I cannot connect to a...
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    [SOLVED] Enable sparse on existing ZFS storage

    Hi, I noticed my manually created zfs pool is not sparse (thin). Is there an easy way to activate it afterwards? I could easily add "sparse 1" to my storage config, but would that work, and most important, not destroy the data?
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    No network after upgrading to latest kernel (pve 5.4)

    Hi, when I upgraded to the newest kernel (4.15.18-23-pve) the machine cannot find interface ens3 anymore. I wanted to upgrade to 6.0, but I guess thats only working when you're on the latest kernel. If i boot into 4.15.18-15 everything works fine. auto lo iface lo inet loopback allow-hotplug...
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    [SOLVED] Debian 10 LXC Container won't start after 'apt upgrade'

    Hi, I have an interesting phenomenon with my proxmox (6.0-4). If I create a container with the official Debian 10 image (debian-10.0-standard_10.0-1_amd64.tar.gz) it will work until I update the packages. After that the container will not survive a reboot: 28 packages can be upgraded. Run 'apt...
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    Externe Festplatte (USB) an Windows VM durchreichen

    Moin, ich wollte gerne eine externe USB Platte an eine Windows Server 2016 VM durchreichen, allerdings bootet die VM dann nicht mehr. Laut lsusb ist es dieses Gerät am Host: Bus 003 Device 012: ID 152d:0562 JMicron Technology Corp. / JMicron USA Technology Corp. Also gebe ich das auch durch...
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    Virtuelle Festplatte sehr langsam

    Hi, mir wurde ja geraten kein ZFS RAID zu machen, daher habe ich nun eine Icy Box IB-RD3621U3, da drin 2x 4TB WD Red im RAID1. Soweit so gut, direkt am Proxmox System ist das ganze auch recht flott, wenn man mit hdparm bzw dd testet (ohne cache natürlich) dann komme ich auch auf gute werden um...
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    ZFS auf Low-End System?

    Moin, ich baue mir gerade einen kleinen Homeserver zusammen, auf dem ein paar kleine VMs mittels Proxmox laufen sollen (nichts Rechenintensives) Folgende Komponenten habe ich: - ASRock J5005-ITX - Syba SI-PEX40064 - 2x 8GB RAM Platten sind momentan 2x 120GB SSD und 2x 4TB WD RED, wobei da...
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    higher ram usage with ballooning enabled?

    Hi, I just noticed something weird. I have two Linux VMs with 1GB RAM each, both with ballooning enabled. Both use almost 100% of their RAM (at least according to proxmox) (~900MB). If I deactivate ballooning on both, the RAM usage drops to about 500MB (also according to proxmox). As far as I...
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    5.3 and lxc nesting

    Hi, I'm very happy too see, that you can now run docker inside a lxc container. So I tried that with my mailcow installation, which I ran before using lxc.apparmor.profile: unconfined lxc.cgroup.devices.allow: a lxc.cap.drop: in the containers config. By enabling nesting I also removed that...
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    Hohe CPU Last nach Serverausfall

    Hallo, gestern ist mein Server ausgefallen, auf dem nur LXC Container laufen. Bei einem ist die Datenbank flöten gegangen, aber das konnte ich aus dem Snapshot wiederherstellen. Es ist nur komisch, dass nun die CPU Last ziemlich hoch ist, Load ist so um die 3 und peaked auf 5-10 hoch. CPU ist...
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    move from "directory" to lvm

    Hi, on my test system I have a 20GB Disk, splitted into 18.5GB lv_root and 1GB lv_swap. Production systems look the same, just with larger disks. I've set storage in proxmox as directory /var/lib/vz. It has been fine, but I want to use snapshots, so I have to use lvm. Is there a way to switch...
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    docker in lxc container

    hi guys, i found this tutorial to run docker in lxc for proxmox: https://www.solaris-cookbook.eu/virtualisation/proxmox/proxmox-lxc-running-docker-inside-container/ basically just add lxc.apparmor.profile: unconfined lxc.cgroup.devices.allow: a lxc.cap.drop: to the containers config. it...
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    Access hosts external IP from NATed container

    Hi, I always worked around this problem, but now I'm just tired of it and want to do it right. My containers have IP and internet connection like this: https://pve.proxmox.com/wiki/Network_Model#Masquerading_.28NAT.29_with_iptables Lets say 10.10.10.100 is a mail server, and 10.10.10.200 is a...
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    unreachable nfs causes high load

    Hi, I have my local router connected to a proxmox installation via nfs (over vpn). It's working, I noticed, when my router is down, and so the nfs storage isn't reachable on the proxmox server, the server load goes up from 0.05 (test server, no vm's running) to 1, and from 0.5 to 3.5 (low used...
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    .raw disk files of containers keep it's size after deleting files inside the container

    Hi, this is a (kind of a) continuation of this thread: https://forum.proxmox.com/threads/container-shows-wrong-disk-usage.37429/ But to keep things clear and because of a new problem I open a new topic. So the old problem was, that whenever I delete files inside a container the raw disk file...
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    Storage nicht in zwei LVMs unterteilen?

    Moin, bei der Installation von proxmox werden ja automatisch zwei storages angelegt, ein folder für VZDump backup file, ISO image, Container template und eine lvm-thin für Disk image, Container. Da ich nur 60GB SSD habe, macht diese unterteilung für mich keinen sinn. Kann man auch nur ein LVM...
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    TASK ERROR: no such volume group 'pve'

    Hi, I have debian 9 and installed proxmox like this: https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_Stretch when i want to create a container i get this error: TASK ERROR: no such volume group 'pve' I added the node to an existing proxmox cluster
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    container shows wrong disk usage?

    Hi, this is how my df -h looks like: root@test:~# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/pve-vm--200--disk--1 98G 58G 36G 62% / This container got like no data on it, how is it possible that 58GBs are "used"? Is this a bug in the...
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    Proxmox Hypervisor - SCSI or VirtIO?

    Hello, I run Proxmox on another kvm (qemu) virtualized machine (nested). At the moment the disk driver for the proxmox vm is set to SCSI, but i'm not shure if it's the best option. Can I just shutdown my proxmox vm and change the driver to VirtIO instead of SCSI, is this even useful?

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