UdoB's latest activity
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You might find this of interest: https://chrisdown.name/2018/01/02/in-defence-of-swap.html Without SWAP I wouldn't use nohang. I only use it because linux doesn't always step in on its own for some reason. I didn't configure it further. -
@proxuser77 If you boot off ZFS they do not create swap to avoid problems: https://pve.proxmox.com/wiki/ZFS_on_Linux#zfs_swap https://pve.proxmox.com/pve-docs/chapter-pve-installation.html#advanced_zfs_options
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And another piece by Chris Down why he recommend to use zswap instead of zram: https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html It has some nuance though, so better read for your self ;) And thanks to @UdoB for his hint on...
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UdoB replied to the thread Per-node resource allocation view in PDM / Proxmox cluster.I cannot answer your question, sorry. I just want to mention this project: https://github.com/credativ/ProxLB From my limited(!) point of view PDM is meant to be helpful when managing multiple and independent clusters (or multiple single hosts).
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UdoB reacted to IsThisThingOn's post in the thread [PVE 9/ZFS-Based VM/LXC Storage] Why Shouldn't I Disable Swap Inside Linux VMs? with
Like.
Same here. How else could I speed up reads with ARC? ;) -
Hi, Did you check /etc/hosts on each host? Sometime there is a stale entry that causes lots of pain.
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so yes :) l2arc almost never yields useful results. you're better off just using the drive seperately. More to the point- what is your usecase? in a homelab, its common that your bulk storage can be slow without any real impact. put your...
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UdoB replied to the thread [PVE 9/ZFS-Based VM/LXC Storage] Why Shouldn't I Disable Swap Inside Linux VMs?.Correct. That's the reason I didn't test it myself, yet. Please do not hesitate to tell us you findings :-) Fortunately my professional cluster has more physical Ram than it needs. And for my homelab I bought some MiniPC with 128 GiB Ram just...
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UdoB reacted to Johannes S's post in the thread [PVE 9/ZFS-Based VM/LXC Storage] Why Shouldn't I Disable Swap Inside Linux VMs? with Like.
I didn't but will definitevly change this asap ;) One should take into account that for zswap you always need physical swap as backing device. For example if you use the defaults of PVEs installer for ZFS you will endup without space for a...
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Edit : UdoB link is less complicated. I use this script https://github.com/mkorthof/ipset-country on a host customize the code to keep ipdeny.com download/update and ipset generation/update Remove firewall/rules parts Then use the "ipset"...
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UdoB reacted to Deerom's post in the thread Tuxis launches free Proxmox Backup Server BETA service with Like.
Hi @ all! Good news, we've re-opened the creation of free PBS datastores! You can order your datastore via https://www.tuxis.nl/en/proxmox-backup-server/ Performance has noticeably been improved thanks to the fixes that Proxmox-devs wrote for...
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UdoB replied to the thread new drive setup, considering RAIDZ1.This gives the IOPS of a single spindle. Recommended is to use (two) mirrors --> double IOPS for writing data and four times the IOPS for reading data. And... for rotating rust I highly recommend to add two fast - but small - SSD/NVMe as a so...
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UdoB replied to the thread IBM Plugin.Is there some documentation for that plugin? It should show details about the supported protocols and features, right?
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UdoB reacted to alexskysilk's post in the thread [PVE 9/ZFS-Based VM/LXC Storage] Why Shouldn't I Disable Swap Inside Linux VMs? with Like.
zswap is great, but is no substitute for ram. if you are using a production environment (read: for money) just provision sufficient ram. yes its expensive, but its worth much more in consistent performance.
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Your point don't address the root concern though. It's quite difficult to proove that a certain Software doesn't have a specific feature ( aka malicious code) due to the Halteproblem. Thus scanning with antivirus snakeoil only shows that your exe...
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UdoB reacted to mouk's post in the thread [FIXED] pve firewall seems to be bypassed..? VM port open, despite not opened in any pve firewall with Like.
Hi Stefan, Thanks for the quick follow-up! Looking at your requested output qm config 3346, I noticed it myself: firewall=1 was missing for the net0 device. After turning it on, the firewall started behaving as expected! Apologies and thanks!
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UdoB reacted to Johannes S's post in the thread Proxmox VE - Ceph SMB/NFS gateways integration into Proxmox (+ UI?) with Like.
Feature requests should be filed on https://bugzilla.proxmox.com which is monitored by the developers. In this community forum it might happen, that developers miss something
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Hi, Thanks for the reply. Yes I agree, our other clusters we own are all on private IPs only accessible via VPNs, but in this case we have a 3 node cluster with a server vendor in a Datacentre in London. The Datacentre, do not offer...
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UdoB replied to the thread [PVE 9/ZFS-Based VM/LXC Storage] Why Shouldn't I Disable Swap Inside Linux VMs?.Did we mention this (much newer) article in the other threads? https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html I must admit that I haven't had zswap on my agenda at all. I read the article twice - and did not understand it...
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UdoB reacted to Johannes S's post in the thread Proxmox Backup Server configuration , change listen address and port with Like.
One possible alternative to VPN is to use s reverse proxy as described by @meyergru https://forum.proxmox.com/threads/using-a-reverse-proxy-to-limit-pbs-exposition-to-api-endpoints-only.182188/ Personally I would still use a vpn like wireguard...