UdoB's latest activity
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UdoB reacted to VictorSTS's post in the thread proxmox ceph performance with consumer grade samsung ssd with
Like.
Good catch!! My brain stopped processing as soon as my eyes spotted the "870 QVO ssds", which happened before reading that 2x4tb per node o_O -
UdoB replied to the thread proxmox ceph performance with consumer grade samsung ssd.That's worst design possible. Beside the too cheap devices... Look at one node: when one OSD fails, the other one on the same node has to take over the data from the dead one. It can not be sent to another node because there are already copies...
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UdoB reacted to VictorSTS's post in the thread proxmox ceph performance with consumer grade samsung ssd with Like.
For once, AI is right :) Any consumer drive will have low Ceph performance due to rocksDB and sync writes, but those drives in particular are terrible for anything but PC archiving purposes due to it's small SLC cache and very slow QLC nand...
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UdoB reacted to jdancer's post in the thread Is a 3-node Full Mesh Setup For Ceph and Corosync Good or Bad with Like.
While it's true that 3-nodes is the bare minimum for Ceph, losing a node and depending on the other 2 to pick up the slack workload will make me nervous. For best practices, start with 5-nodes. With Ceph, more nodes/OSDs = more IOPS. As been...
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UdoB replied to the thread Review appreciated/best practise: new pve environment with ceph.Nice approach :-) Even though you have redundant switches I would recommend to prepare a separate wire (not a virtual LAN, 1 GBit/s is sufficient) for one of your multiple corosync rings. Disclaimer: your approach is multiple levels above my...
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UdoB replied to the thread Windows Server 2025 → considering a migration to Proxmox VE.It's not clear if you know the following page: https://pve.proxmox.com/wiki/Windows_2025_guest_best_practices - maybe some of those hints are helpful for you...
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UdoB replied to the thread How to delegate routing between LXC in the same subnet ?.There is no routing inside of a single IP network. All traffic is forwarded inside the bridge from VMa to VMb in the very same way it is done in a physical switch. To force a VM/LXC to send all packets to the router you would need to setup a /30...
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UdoB replied to the thread Can I Use eBPF to Firewall?.Why not virtualize that idea? Create some VMs. Choose a "simple" OS without many bells and whistles. Update them and install relevant software - while being connected to the "normal" LAN. Make snapshots/backups. Setup some bridges without a...
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UdoB reacted to x509's post in the thread Is a 3-node Full Mesh Setup For Ceph and Corosync Good or Bad with Like.
Very informative link/post. Thank you. My takeaway: build a bigger cluster! Budget-approvers aren't going to like that answer!
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UdoB reacted to SteveITS's post in the thread Is a 3-node Full Mesh Setup For Ceph and Corosync Good or Bad with Like.
Have a read through https://forum.proxmox.com/threads/fabu-can-i-use-ceph-in-a-_very_-small-cluster.159671/. One challenge with 3 nodes and 3/2 replication is that if you reboot or shut down one node you’re already at the minimum. Proxmox...
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UdoB reacted to Johannes S's post in the thread Virtualization as an alternative to two physical computers with Like.
Propably. Whether this is a good idea is quite a different story though. First a NAS and a workstation/gaming pc are actually quite different things and some of their requirements counterdict eachother. For example on a gaming pc or highend...
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UdoB replied to the thread timeout when accessing backups via gui.My very first PBS used only rotating rust. First it worked great. After putting a few TB of actual data on it I had exactly that experience. The listing of backups failed with timeout. Trying it immediately again would succeed - because most part...
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i dont think this is proxmox-related at all. looks to me like he got lost and ended up on the wrong forums :)
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UdoB replied to the thread Anybody know Mellanox?.Probably it's a VM under PVE ;-)
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The first thing you could try is checking your bios version and updating it. Is intel-microcode installed? If not apt install intel-microcode The logs would also be helpful - refer to UdoB's comment for that.
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UdoB replied to the thread Ubuntu Server 24.04 VM Virtio NIC.Is it? The relevant drivers for that virtual NIC are already baked in by default? This very old page is irrelevant nowadays? https://pve.proxmox.com/wiki/Paravirtualized_Network_Drivers_for_Windows Some minutes later: I've just started a...
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UdoB replied to the thread VM status: internal-error.Search for "journalctl"; the journal has replaced the classic syslog in Debian 13 / Trixie. Use journalctl -f to watch it live. To see the latest output of the previous boot: journalctl -b -1 -e = show the end (-e) of the previous (-1) boot...
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UdoB replied to the thread Ubuntu Server 24.04 VM Virtio NIC.Well... it is a virtual device. Capabilities reported may be different than the hardware implements. Did you actually try to transfer more than 1 GBit/s? Give it a try - using iperf3 for example.
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Generally PBS retention and expiration works fine. However, if you recycle vms frequently, and don't reuse vmid numbers the last backups never go away. This is somewhat related to https://bugzilla.proxmox.com/show_bug.cgi?id=6074 which isn't...
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UdoB reacted to SteveITS's post in the thread Virtualization as an alternative to two physical computers with Like.
With your goal as stated I think you’re making it way more complicated than two devices. Actually having two CPUs means a higher class motherboard, RAM per CPU etc. a faster single CPU would also work. But then you don’t want to use any virtual...