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Under which specific circumstances? For me this sound plainly wrong. Especially with HDDs you want a zillion independent ones, not only a few. Disclaimer, as already noted: I have dropped Ceph.

Is there any progress in to utilize "zfs clone" (linked or full/promoted) to create this missed so sadly feature? Each and every snapshot should be usable to spawn a new instance. Possibly with a new <vmid> to stay conflict-free... Just dreaming... ;-)

Yes. The downside is clear: it needs space. At least temporarily and possibly just for one VM - if you are able to write a wrapper-script like "vzdump ... copy/sync ... delete". Please note that I do not recommend that, I just wanted to mention an alternative approach as syncing ".chunks"...

The very minimal thing to do to get a helpful reply is to post the full task log and/or the journal (e.g. journalctl -b -1 -e if it crashed during the previous boot, see "-1"). Please post all terminal output in ...-tags for good readability.

Well..., I am not sure, but: The chance to get an inconsistent .chunks-folder is not zero. You need to make sure that all of those 100000 to millions chunks are from the same moment in time. This also means that you need to pull back all of them to restore any small file from PBS. For me this...

Well..., no! You need several nodes and multiple OSD per node for a good experience, beside other things like a fast (>=10GBit/s) and redundant network. I had used Ceph over a year in my "productive Homelab(!)" - starting as small as possible. Some notes...

There is a manual "poor man's disk-full-protection" for ZFS. Initialize it like this, with any fitting capacity - here 10 GByte: ~# zfs create -o reservation=10G rpool/diskfullsafeguard And in case to run into that problem simply drop it ~# zfs destroy rpool/diskfullsafeguard (Or "zfs set...

From that sentence it is not clear if you have a hardware Raid5 and use ZFS on top of it, or if you have a RaidZ1, which is similar like a Raid5. Whatsoever - that does not work well. No way! My recommendation, as mentioned multiple times here in the forum: use an HBA, not hardware Raid -...

No. There is an external project which claims to do so: https://forum.proxmox.com/threads/proxlb-re-balance-your-ct-vm-workloads-across-nodes-in-your-proxmox-cluster.152200/

Wie ist denn die Blechplatte eingebunden? Genau so sollte das auch mit der SSD funktionieren. Was meinst du mit "SSD ID"? Wenn du das Blockdevice duplizierst, bleibt alles identisch. Wenn die SSD den Anschluss der HDD verwendet ist sogar "sdX" gleich. Das gilt allerdings nicht für alle...

Interesting article, thank you! Yes, probably. But to my (very limited!) understanding it is slow. (Edit: I mean specifically shrinking the size, not its function.) When a single process (one VM, one KVM process) requests a large block of memory, the kernel can NOT force ARC to shrink during...

Naja, du könntest theoretisch den vollständigen ".chunks"-Ordner auf eine SSD kopieren und dann den neuen Ordner "über" den original HDD-Ordner mounten (oder linken). Diese vorbereitende Kopieraktion ist aber nicht viel schneller als dein langsames Restore. Natürlich kannst du auch die...

I can't give a good answer as I never fiddled manually with any certificates (in PVE context). I just use the automatically generated ones...

Well, to self-host a DNS server is possible, but usually overkill. The "classic" version is BIND (https://www.isc.org/bind/) but there are several alternatives. This is a sophisticated topic, don't worry about it - as long as you keep /etc/hosts consistent on all systems in your LAN. (Which was...

Sometimes an example is helpful. This is a possible /etc/hosts file, which is identical on all four nodes: # /etc/hosts 127.0.0.1 localhost.localdomain localhost 192.0.2.101 pvea.example pvea 192.0.2.102 pveb.example pveb 192.0.2.103 pvec.example pvec 192.0.2.104 pved.example pved # The...

Just a generic hint: make sure that /etc/hosts has identical content on both/all nodes. "ssh root@othernode" and "ssh root@nameofthisnode" must work on both/all nodes.

Ich habe da nicht wirklich Erfahrung mit, aber: wenn du die Datenintegrität sicherstellen willst, dass muss das auf dem Application-Layer geschehen. Also innerhalb der Datenbanksoftware, die dazu einen "Clustermodus" kennen muss. Mit der ZFS-Replikation hast du immer Datenverlust, weil ja eben...

For my Ubuntu VMs I use apt show linux-virtual ; apt show linux-image-virtual Description: Minimal Generic Linux kernel and headers This package will always depend on linux-image-virtual and linux-headers-virtual. Package: linux-image-virtual Description: Virtual Linux kernel image This...

The interfaces configuration looks fine. Just two generic notes: 1) the naming convention is inconsistent - vmbr254 should be 250. 2) a bridge is not required to have an IP address. The vast majority of my bridges don't as networks are connected by a router, not by the PVE host. Sorry, no...

Pure suspicion: you have two computers (this PVE and another, unknown device) fighting for the same IP address. Use another one. Servers like PVE should be configured statically, post cat /etc/network/interfaces if that's a problem.