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I have a PVE cluster, where all nodes have a zfs pool with name `zpool`. I have a ZFS storage as follows (from /etc/pve/storage.cfg): zfspool: vm-disk-images pool zpool/vm-disk-images content rootdir,images mountpoint /zpool/vm-disk-images sparse 0 Recently I added a new node...

I have a CT that keeps swapping, despite having plenty free RAM. free -m total used free shared buff/cache available Mem: 3000 271 2194 0 534 2728 Swap: 1024 8 1015 I think the...

Hi, I need to setup a NFS server with continuous backup (for example every 5 min). Any suggestion how to do it please? At the moment I am considering these options: (1) LXC container with bind mount to a ZFS volume; NFS server via nfs-ganesha inside LXC, backup via ZFS snapshot on node (2) ZFS...

I want to setup a NFS server that would serve as shared home user dirs for a company. One requirement is that the data should be backed up continuously, similarly to dropbox (e.g. backup every 10min). I think it could be done with ZFS send/receive. I am considering 2 choices: (1) setup a CT...

I have some ZFS nested datasets on a node as follows: /zpool/ds1 /zpool/ds1/ds1A /zpool/ds1/ds1B when I bind mount /zpool/ds1 for a CT, the child datasets are not accessible in the CT. Is there a way to solve this, apart from having a separate bind mount for each ds1A, ds1B and so on?

I already have a PBS configured for a cluster to backup the VMs/CTs. Can I use it to backup the node OS and cluster config? I searched the forum but didn't find any relevant post. thanks in advance for any hint.

I have a PBS instance running inside a CT with bind mount /zpool/pbs,mp=/zpool-pbs on node-A in a PVE cluster. Is it possible to move this CT to another node-B in the same cluster without data loss? My plan is following: - backup the CT to local storage on node-A - copy backup to node-B - sync...

I renamed hostname on a proxmox node and then added it to a cluster. For some reason it showed in the cluster under the old name, so I deleted it from the cluster with pvecm delnode. It was a blunder from me, I didn't read the wiki carefully. Now my question is: apart from reinstalling the...

I did a systemctl restart networking on a node and after that networking stopped for all VMs. No real change in /etc/network/interfaces, just some cosmetic change to make it more readable and some comments. The workaround was to restart all VMs. However I'd like to know this is the expected...

We see everywhere the advice "don't use ZFS on top hardware RAID". But I also see opinions that it's a myth. This question is not about the rationals to avoid (or use) hw raid with ZFS. I'd like to hear from Proxmox community about first-hand experience with ZFS on top hw raid, especially...

I am trying to configure ZFS on a server with PERC H745 controller and 4 disks. The manual says this is a raid card that supports eHBA (Enhanced HBA) mode. I set the card to that mode, and set all the disks to non-RAID mode. After that the disks show up in Proxmox as individual disks. However...

I have a PVE node on a Dell PowerEdge R550 connected to a MD1400 array using redundant connection. The controller is a Dell HBA355e. The disks show twice in the OS; I guess I must setup multipathing but I have very little experience with this. I followed some guides I could google for, but get...

Hi, I am in the progress of setting up a Proxmox VE server with ZFS, using 12x 20TB SAS disks in HBA mode. Which ZFS RAID level would be a good choice? I am thinking of the following options: (1) RAID10: 6x mirror vdev (2) RAIDZ2-0: 2x RAIDZ2 vdev, each 6 disks, then RAID0 from those 2x RAIZD2...

I wonder if a LXC container can cause severe problems to the node, to the point that the node might hang and must be rebooted? For example some processes inside the container might enter the uninterruptible sleep (also known as state "D" from ps output) due to some heavy disk IO operations. The...

I have a PowerVault MD1200 array that I would like to use with ZFS. Host is a PowerEdge R710. Is PERC H200e (also known as Dell 6Gbps SAS HBA Adapter) suitable for this task?

Hi, I run a Proxmox VE cluster with mostly VMs and they work very well. Recently I created 2 CTs, because I want to bind-mount some ZFS dataset from host to the CTs. The CTs seem to work as expected, except that there is often a delay of a few seconds after some command. Examples: (1) ssh...

Hi, I would like to export a ZFS dataset on a node to VMs via NFS. What is the recommended way to do it? I can think of the following options: (1) from node, via ZFS built-in NFS capability (2) from node, via linux nfs-kernel-server (3) from a LXC, bind mount the dataset and export it from...

Hi, what is the recommended way to keep PVE nodes up-to-dated? For now I do manually apt-get update && apt-get dist-upgrade which I don't mind too much, except that sometime the kernel is updated and hence I do a reboot, just to be on the safe side. But I'd prefer to avoid rebooting the nodes...

Hi, I am trying to setup a LXC with a public IP on a node hosted at Hetzner. The network config is somewhat different from the standard way. My setup is done following this link: Proxmox on Debian at Hetzner with multiple IP addresses – blog.no-panic.at (no-panic.at) It works fine for a KVM...

Hi, I am looking for a way to share my ZFS dataset (= DS) with a VM. Options that I am considering: (1) export DS to VM via NFS: great for private network, not so great if the VM is a public host (2) create a disk on ZVOL and attach it to the VM: easiest option, but I must allocate the...